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Ambrožová I, Kákona M, Dvořák R, Kákona J, Lužová M, Povišer M, Sommer M, Velychko O, Ploc O. Latitudinal effect on the position of Regener-Pfotzer maximum investigated by balloon flight HEMERA 2019 in Sweden and balloon flights FIK in Czechia. Radiat Prot Dosimetry 2023; 199:2041-2046. [PMID: 37819338 DOI: 10.1093/rpd/ncac299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 10/08/2022] [Accepted: 12/14/2022] [Indexed: 10/13/2023]
Abstract
When primary space radiation particles enter into the atmosphere of the Earth, they generate showers of secondary radiation. The intensity of secondary radiation reaches its maximum, called the Regener-Pfotzer maximum; its exact position depends on the geomagnetic effective vertical cut-off rigidity, the phase of the solar cycle and also on the type of detected particles. In this paper, several balloon flight experiments are described focusing on the study of the latitudinal effect on the position of the Regener-Pfotzer maximum. Altitude profile of ionization in the atmosphere was measured using radiation detectors flown during several flights at locations with different effective vertical cut-off rigidities (flight HEMERA over Sweden and flights FIK-5 and FIK-6 over Czech Republic). The measured results are supplemented also with simulations using EXPACS 4.11 and the variation of obtained positions of Regener-Pfotzer maximum is discussed.
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Affiliation(s)
- Iva Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, Praha 180 00, Czech Republic
| | - Martin Kákona
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, Praha 180 00, Czech Republic
| | - Roman Dvořák
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, Praha 180 00, Czech Republic
| | - Jakub Kákona
- Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, Prague 166 27, Czech Republic
| | - Martina Lužová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, Praha 180 00, Czech Republic
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, Prague 115 19, Czech Republic
| | - Martin Povišer
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, Praha 180 00, Czech Republic
| | - Marek Sommer
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, Praha 180 00, Czech Republic
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, Prague 115 19, Czech Republic
| | - Olena Velychko
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, Praha 180 00, Czech Republic
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, Prague 115 19, Czech Republic
| | - Ondřej Ploc
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, Praha 180 00, Czech Republic
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2
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Olšovcová V, Ambrožová I, Cimmino A, Horváth D, Lefebvre B, Ploc O, Stránský V, Truneček R, Versaci R. Neutron dose assessment in laser-generated ultra-short pulsed fields. Radiat Prot Dosimetry 2023; 199:1910-1916. [PMID: 37819290 DOI: 10.1093/rpd/ncac221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/14/2022] [Accepted: 09/26/2022] [Indexed: 10/13/2023]
Abstract
ELI Beamlines is one of the pillars of the Extreme Light Infrastructure European Research Infrastructure Consortium (ELI ERIC), the European project aiming at building the next generation of high power lasers for fundamental research and industrial applications. Several high-power lasers are hosted by the ELI Beamlines facility. Even at a power lower than the nominal one, when interacting with a target, the laser can generate mixed ionizing radiation fields of unique nature. One of the major laser systems, High-repetition-rate advanced petawatt laser system (HAPLS) was already used in commissioning experiments. Detecting the neutrons generated during these experiments has been a challenging task, since certain difficulties were faced. First, the experimental conditions were frequently altered during the commissioning phase (such as laser beam parameters, experimental geometry or target type). Next, the extremely short duration of the ionizing radiation pulse generated by the laser (~10-14 s) complicated the correct interpretation of the data provided by the detectors designed and calibrated in standard fields. Here, one commissioning experiment is described, together with the means of addressing the problem of the detection of the ionizing radiation and the lessons learned in this endeavour.
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Affiliation(s)
- Veronika Olšovcová
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Dolní Břežany 25241, Czech Republic
| | - Iva Ambrožová
- Nuclear Physics Institute, Czech Academy of Sciences, Praha 18000, Czech Republic
| | - Anna Cimmino
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Dolní Břežany 25241, Czech Republic
| | - Dávid Horváth
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Dolní Břežany 25241, Czech Republic
| | - Benoit Lefebvre
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Dolní Břežany 25241, Czech Republic
| | - Ondřej Ploc
- Nuclear Physics Institute, Czech Academy of Sciences, Praha 18000, Czech Republic
| | - Vojtěch Stránský
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Dolní Břežany 25241, Czech Republic
| | - Roman Truneček
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Dolní Břežany 25241, Czech Republic
| | - Roberto Versaci
- ELI Beamlines, Institute of Physics, Czech Academy of Sciences, Dolní Břežany 25241, Czech Republic
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Mishev AL, Kodaira S, Kitamura H, Ploc O, Ambrožová I, Tolochek RV, Kartsev IS, Shurshakov VA, Artamonov AA, Inozemtsev KO. Radiation environment in high-altitude Antarctic plateau: Recent measurements and model studies. Sci Total Environ 2023:164304. [PMID: 37230348 DOI: 10.1016/j.scitotenv.2023.164304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/03/2023] [Accepted: 05/16/2023] [Indexed: 05/27/2023]
Abstract
Polar regions are the most exposed to secondary particles and radiation produced by primary cosmic rays in the atmosphere, because naturally they are with marginal geomagnetic shielding. In addition, the secondary particle flux contributing to the complex radiation field is enhanced at high-mountain altitudes compared to sea level because of the reduced atmospheric attenuation. At present, there are very few systematic experimental measurements of environmental dose at high southern latitudes, specifically at high-altitude region. Here, we report a campaign of measurements with different devices, that is passive and Liulin-type dosimeters, of the radiation background at high-mountain Antarctic station Vostok (3488 m above sea level, 78° 27' S; 106° 50' E). We compare the measurements with a Monte Carlo-based model for the propagation of the cosmic rays through the atmosphere and assessment of the radiation field in the atmosphere. We employed the model to estimate the radiation dose at Vostok station during the ground-level enhancement at 28 October 2021. As in previous studies by other teams, we show that the annual dose equivalent at high-altitude Antarctic facilities can significantly exceed the limit of 1 mSv established for the general population by the ICRP.
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Affiliation(s)
- A L Mishev
- Space Physics and Astronomy Research Unit, University of Oulu, Finland; Sodankylä Geophysical Observatory, University of Oulu, Finland.
| | - S Kodaira
- Radiation Measurement Research Group, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - H Kitamura
- Radiation Measurement Research Group, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - O Ploc
- Nuclear Physics Institute of the Czech Academy of Sciences, Hlavní 130, Řež 250 68, Czech Republic
| | - I Ambrožová
- Nuclear Physics Institute of the Czech Academy of Sciences, Hlavní 130, Řež 250 68, Czech Republic
| | - R V Tolochek
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), 76A Khoroshevskoye shosse, Moscow 123007, Russian Federation; P.N.Lebedev Physical Institute of the Russian Academy of Sciences (LPI RAS), 53 Leninskiy Prospekt, Moscow 119991, Russian Federation
| | - I S Kartsev
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), 76A Khoroshevskoye shosse, Moscow 123007, Russian Federation; LLC "SNIIP-Plus", 5(1) Raspletina, Moscow 123060, Russian Federation
| | - V A Shurshakov
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), 76A Khoroshevskoye shosse, Moscow 123007, Russian Federation
| | - A A Artamonov
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), 76A Khoroshevskoye shosse, Moscow 123007, Russian Federation
| | - K O Inozemtsev
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), 76A Khoroshevskoye shosse, Moscow 123007, Russian Federation
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Kákona M, Ambrožová I, Inozemtsev KO, Ploc O, Tolochek RV, Sihver L, Velychko O, Chroust J, Kitamura H, Kodaira S, Shurshakov VA. SPACEDOS: AN OPEN-SOURCE PIN DIODE DOSEMETER FOR APPLICATIONS IN SPACE. Radiat Prot Dosimetry 2022; 198:611-616. [PMID: 36005980 DOI: 10.1093/rpd/ncac106] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A new Open-Source dosemeter, SPACEDOS, has been developed for measurements of cosmic radiation on board spacecraft and small satellites. Its main advantages are that it is small and lightweight with low power consumption. It can be adjusted for specific applications, e.g. used in pressurized cabins of spacecraft or in vacuum environments in CubeSats or larger satellites. The open-source design enables better portability and reproduction of the results than other similar detectors. The detector has already successfully performed measurements on board the International Space Station. The obtained results are discussed and compared with those measured with thermoluminescent detectors located in the same position as SPACEDOS.
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Affiliation(s)
- Martin Kákona
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Hlavní 130, 250 68 Řež, Czech Republic
- Department of Dosimetry and Application of Ionizing Radiation, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague 1, Czech Republic
| | - Iva Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Hlavní 130, 250 68 Řež, Czech Republic
| | - Konstantin O Inozemtsev
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), Khoroshevskoye Shosse 76A, Moscow 123007, Russian Federation
| | - Ondřej Ploc
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Hlavní 130, 250 68 Řež, Czech Republic
| | - Raisa V Tolochek
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), Khoroshevskoye Shosse 76A, Moscow 123007, Russian Federation
- P. N. Lebedev Physical Institute of the Russian Academy of Sciences, 53 Leninskiy Prospekt, 119991 Moscow, Russian Federation
| | - Lembit Sihver
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Hlavní 130, 250 68 Řež, Czech Republic
| | - Olena Velychko
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Hlavní 130, 250 68 Řež, Czech Republic
- Department of Dosimetry and Application of Ionizing Radiation, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague 1, Czech Republic
| | - Jan Chroust
- Universal Scientific Technologies s.r.o., U Jatek 19/III, 392 01 Soběslav, Czech Republic
| | - Hisashi Kitamura
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Satoshi Kodaira
- National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba 263-8555, Japan
| | - Vyacheslav A Shurshakov
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), Khoroshevskoye Shosse 76A, Moscow 123007, Russian Federation
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Velychko O, Ambrožová I, Kákona M, Ploc O. CHARACTERISATION OF AIRDOS-C DETECTOR FOR MEASUREMENT OF HIGH-ENERGY EVENTS IN THE ATMOSPHERE. Radiat Prot Dosimetry 2022; 198:604-610. [PMID: 36005975 DOI: 10.1093/rpd/ncac105] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 03/23/2022] [Accepted: 05/23/2022] [Indexed: 06/15/2023]
Abstract
At the flight altitudes of modern airplanes, cosmic rays intensity is several times higher than on the Earth's surface. The radiation field is not constant in time and due to various effects, not routinely considered in calculations, the exposure can increase several times. Therefore, a continuous monitoring of radiation exposure on board is required. This article characterises newly developed detectors Airdos-C with diverse scintillation crystals. Unlike detectors based on a Si diode, which are commonly used for long-term measurements, these detectors can also be used for detection of high-energy gamma-rays generated in thunderstorms. For a correct interpretation of the measured data it is important to perform an energy calibration and to verify the detector response in known radiation fields. The results obtained with several radionuclide sources were analysed using mathematical statistics methods. The detectors were also exposed onboard aircraft under well-defined conditions.
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Affiliation(s)
- Olena Velychko
- Nuclear Physics Institute of the Czech Academy of Sciences, Hlavní 130, Husinec, Řež 250 68, Czech Republic
- Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Břehová 7, Prague 115 19, Czech Republic
| | - Iva Ambrožová
- Nuclear Physics Institute of the Czech Academy of Sciences, Hlavní 130, Husinec, Řež 250 68, Czech Republic
| | - Martin Kákona
- Nuclear Physics Institute of the Czech Academy of Sciences, Hlavní 130, Husinec, Řež 250 68, Czech Republic
| | - Ondřej Ploc
- Nuclear Physics Institute of the Czech Academy of Sciences, Hlavní 130, Husinec, Řež 250 68, Czech Republic
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6
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Šlegl J, Langer R, Brunclík T, Mašek P, Strhárský I, Ambrožová I, Chum J, Ploc O. SPECTROMETRY OF HIGH-ENERGY PHOTONS ON HIGH MOUNTAIN OBSERVATORY LOMNICKÝ ŠTÍT DURING THUNDERSTORMS. Radiat Prot Dosimetry 2022; 198:623-627. [PMID: 36005989 DOI: 10.1093/rpd/ncac108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 04/12/2022] [Accepted: 04/20/2022] [Indexed: 06/15/2023]
Abstract
Lomnický štít, Slovakia, 2634 m above sea level, is known to be a place of extreme electric fields measured during thunderstorms and is thus a suitable place for thunderstorm-related ionising radiation research. We present one of the strongest Thunderstorm ground enhancements (TGE) ever detected, which occurred on 12 September 2021. The TGE was detected with the SEVAN detector and also with the new Georadis RT-56 large volume gamma spectrometer. In the paper, we present spectra of the TGE measured with the spectrometer as well as SEVAN coincidence data supplemented by the data from electric field mill.
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Affiliation(s)
- Jakub Šlegl
- Nuclear Physics Institute of CAS, Husinec - Řež 130, 250 68 Řež, Czech Republic
- Faculty of Nuclear Physics and Physical Engineering of the Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech Republic
| | - Ronald Langer
- Nuclear Physics Institute of CAS, Husinec - Řež 130, 250 68 Řež, Czech Republic
- Institute of Experimental Physics of SAV, Watsonova 1935/47, 040 01 Košice, Slovakia
| | - Tomáš Brunclík
- Georadis s.r.o., Novomoravanská 321/41 619 00 Brno, Czech Republic
| | - Petr Mašek
- Georadis s.r.o., Novomoravanská 321/41 619 00 Brno, Czech Republic
| | - Igor Strhárský
- Institute of Experimental Physics of SAV, Watsonova 1935/47, 040 01 Košice, Slovakia
| | - Iva Ambrožová
- Nuclear Physics Institute of CAS, Husinec - Řež 130, 250 68 Řež, Czech Republic
| | - Jaroslav Chum
- Institute of Atmospheric Physics of CAS, Boční II 1401/1a, 141 00 Prague, Czech Republic
| | - Ondřej Ploc
- Nuclear Physics Institute of CAS, Husinec - Řež 130, 250 68 Řež, Czech Republic
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Cimmino A, Ambrožová I, Motta S, Versaci R, Olšovcová V, Chvátil D, Olšanský V, Truneček R, Velyhan A, Stránský V, Šolc J. COMPARISON OF OSL AND TL DOSEMETERS WITH DATA COLLECTED AT THE MT25 CYCLIC ELECTRON ACCELERATOR. Radiat Prot Dosimetry 2022; 198:670-674. [PMID: 36005969 DOI: 10.1093/rpd/ncac117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 05/18/2022] [Indexed: 06/15/2023]
Abstract
The Microtron MT25 is a cyclic electron accelerator with a Kapitza resonator, maximum beam energy of 25 MeV, standard repetition frequency of 423 Hz, pulse length of 3.5 μs and mean current of 30 μA. Studies at conventional particle accelerators allow to understand the response of dosemeters in known and controllable radiation fields. Subsequently, it is possible to develop models and predict their behavior in complex radiation fields, such as those generated at laser and FLASH facilities. Therefore, response of thermally and optically stimulated luminescence detectors outside of the beam was studied at the Microtron MT25. The detectors were placed on a Plexiglas phantom inside a lead and iron bunker to shield-off background radiation. In addition, GAFChromic™ films and track detectors were used. Two irradiations were performed: with and without an 8-cm thick polyethylene moderator. This paper presents a comparison of the responses of the different detection systems.
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Affiliation(s)
- Anna Cimmino
- Safety Group, ELI Beamlines Centre, Institute of Physics, Czech Academy of Sciences, Za Radnicí 835, Dolní Břežany 25241, Czech Republic
| | - Iva Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute, Czech Academy of Sciences, Na Truhlářce 39/64, Prague 8 18000, Czech Republic
| | - Silvia Motta
- Safety Group, ELI Beamlines Centre, Institute of Physics, Czech Academy of Sciences, Za Radnicí 835, Dolní Břežany 25241, Czech Republic
- Dosimetry Group, Paul Scherrer Institut, Forschungsstrasse 111, Villigen PSI 5232, Switzerland
| | - Roberto Versaci
- Safety Group, ELI Beamlines Centre, Institute of Physics, Czech Academy of Sciences, Za Radnicí 835, Dolní Břežany 25241, Czech Republic
| | - Veronika Olšovcová
- Safety Group, ELI Beamlines Centre, Institute of Physics, Czech Academy of Sciences, Za Radnicí 835, Dolní Břežany 25241, Czech Republic
| | - David Chvátil
- Department of Accelerators, Nuclear Physics Institute, Czech Academy of Sciences, Husinec-Řež 130, Řež 25068, Czech Republic
| | - Václav Olšanský
- Department of Accelerators, Nuclear Physics Institute, Czech Academy of Sciences, Husinec-Řež 130, Řež 25068, Czech Republic
| | - Roman Truneček
- Safety Group, ELI Beamlines Centre, Institute of Physics, Czech Academy of Sciences, Za Radnicí 835, Dolní Břežany 25241, Czech Republic
| | - Andriy Velyhan
- Safety Group, ELI Beamlines Centre, Institute of Physics, Czech Academy of Sciences, Za Radnicí 835, Dolní Břežany 25241, Czech Republic
| | - Vojtěch Stránský
- Safety Group, ELI Beamlines Centre, Institute of Physics, Czech Academy of Sciences, Za Radnicí 835, Dolní Břežany 25241, Czech Republic
| | - Jaroslav Šolc
- Unit of Primary Metrology of Ionizing Radiation, Czech Metrology Institute, Photon Dosimetry Laboratory, Radiová 1a, Praha 10 102 00, Czech Republic
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Sommer M, Štěpánová D, Kákona M, Velychko O, Ambrožová I, Ploc O. CALIBRATION OF SILICON DETECTORS LIULIN AND AIRDOS USING COSMIC RAYS AND TIMEPIX FOR USE AT FLIGHT ALTITUDES. Radiat Prot Dosimetry 2022; 198:597-603. [PMID: 36005970 DOI: 10.1093/rpd/ncac104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/03/2022] [Accepted: 02/12/2022] [Indexed: 06/15/2023]
Abstract
Silicon detectors such as Liulin and AIRDOS are used for cosmic radiation measurements onboard aircraft. These measurements can be used for the verification of computer programs assessing aircraft crew radiation exposure. Recently performed intercomparison flights showed large variances of absorbed doses among individual detectors and significant differences between results of silicon detectors and computer programs. In order to explain for these differences, we have developed energy calibration method that can be performed on short flights. The method is based on cross-calibration of Liulin and AIRDOS deposited energy spectra with deposited energy spectra measured by Timepix which has superior detection properties in terms of energy resolution and the detection threshold. Moreover, the portion of dose which is omitted due to low sensitivity for low-energy deposits was calculated. The resulting absorbed dose rates at two intercomparison flights show significantly improved variation of results and better agreement with modelled absorbed dose rates.
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Affiliation(s)
- Marek Sommer
- Nuclear Physics Institute of the CAS, Department of Radiation Dosimetry, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
- Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Department of Dosimetry and Application of Ionizing Radiation, Břehová 7, 115 19 Prague 1, Czech Republic
| | - Dagmar Štěpánová
- Nuclear Physics Institute of the CAS, Department of Radiation Dosimetry, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
- Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Department of Dosimetry and Application of Ionizing Radiation, Břehová 7, 115 19 Prague 1, Czech Republic
| | - Martin Kákona
- Nuclear Physics Institute of the CAS, Department of Radiation Dosimetry, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
| | - Olena Velychko
- Nuclear Physics Institute of the CAS, Department of Radiation Dosimetry, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
| | - Iva Ambrožová
- Nuclear Physics Institute of the CAS, Department of Radiation Dosimetry, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
| | - Ondřej Ploc
- Nuclear Physics Institute of the CAS, Department of Radiation Dosimetry, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
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9
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Kákona J, Lužová M, Kákona M, Sommer M, Povišer M, Ploc O, Dvořák R, Ambrožová I. MEASUREMENT OF THE REGENER-PFOTZER MAXIMUM USING DIFFERENT TYPES OF IONISING RADIATION DETECTORS AND A NEW TELEMETRY SYSTEM TF-ATMON. Radiat Prot Dosimetry 2022; 198:712-719. [PMID: 36005953 DOI: 10.1093/rpd/ncac124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/14/2022] [Accepted: 02/08/2022] [Indexed: 06/15/2023]
Abstract
Stratospheric balloons are a useful tool for the investigation of cosmic radiation at high altitudes and the tests of new detectors of cosmic radiation. Due to necessary data processing, the balloon gondola needs to carry, together with radiation detectors, additional supplementary sensors measuring humidity, temperature, location and orientation, altitude, atmospheric pressure, acceleration, etc. A newly developed universal system TF-ATMON, based on using already existing tools of the PX4 open-source project, enables apart from data recording and monitoring, also the possibility to trace the balloon gondola after the flight. The application was demonstrated on stratospheric balloon flight FIK-6. This flight was unique because three different types of radiation detectors were used at one flight. It enabled us to compare the altitude of the Regener-Pfotzer maximum measured with different types of sensors sensitive to a different type of secondary cosmic radiation generated in the atmosphere.
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Affiliation(s)
- Jakub Kákona
- Czech Technical University in Prague, Faculty of Electrical Engineering, Prague, Czech Republic
| | - Martina Lužová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, 180 00, Prague 8, Czech Republic
| | - Martin Kákona
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, 180 00, Prague 8, Czech Republic
| | - Marek Sommer
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, 180 00, Prague 8, Czech Republic
| | - Martin Povišer
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, 180 00, Prague 8, Czech Republic
| | - Ondřej Ploc
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, 180 00, Prague 8, Czech Republic
| | - Roman Dvořák
- Research and Development Department, ThunderFly s.r.o., U Jatek 19, Soběslav 392 01, Czech Republic
| | - Iva Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, 180 00, Prague 8, Czech Republic
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10
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Knežević Ž, Stolarczyk L, Ambrožová I, Caballero-Pacheco MÁ, Davídková M, De Saint-Hubert M, Domingo C, Jeleń K, Kopeć R, Krzempek D, Majer M, Miljanić S, Mojżeszek N, Romero-Expósito M, Martínez-Rovira I, Harrison RM, Olko P. Out-of-Field Doses Produced by a Proton Scanning Beam Inside Pediatric Anthropomorphic Phantoms and Their Comparison With Different Photon Modalities. Front Oncol 2022; 12:904563. [PMID: 35957900 PMCID: PMC9361051 DOI: 10.3389/fonc.2022.904563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Accepted: 06/15/2022] [Indexed: 11/23/2022] Open
Abstract
Since 2010, EURADOS Working Group 9 (Radiation Dosimetry in Radiotherapy) has been involved in the investigation of secondary and scattered radiation doses in X-ray and proton therapy, especially in the case of pediatric patients. The main goal of this paper is to analyze and compare out-of-field neutron and non-neutron organ doses inside 5- and 10-year-old pediatric anthropomorphic phantoms for the treatment of a 5-cm-diameter brain tumor. Proton irradiations were carried out at the Cyclotron Centre Bronowice in IFJ PAN Krakow Poland using a pencil beam scanning technique (PBS) at a gantry with a dedicated scanning nozzle (IBA Proton Therapy System, Proteus 235). Thermoluminescent and radiophotoluminescent dosimeters were used for non-neutron dose measurements while secondary neutrons were measured with track-etched detectors. Out-of-field doses measured using intensity-modulated proton therapy (IMPT) were compared with previous measurements performed within a WG9 for three different photon radiotherapy techniques: 1) intensity-modulated radiation therapy (IMRT), 2) three-dimensional conformal radiation therapy (3D CDRT) performed on a Varian Clinac 2300 linear accelerator (LINAC) in the Centre of Oncology, Krakow, Poland, and 3) Gamma Knife surgery performed on the Leksell Gamma Knife (GK) at the University Hospital Centre Zagreb, Croatia. Phantoms and detectors used in experiments as well as the target location were the same for both photon and proton modalities. The total organ dose equivalent expressed as the sum of neutron and non-neutron components in IMPT was found to be significantly lower (two to three orders of magnitude) in comparison with the different photon radiotherapy techniques for the same delivered tumor dose. For IMPT, neutron doses are lower than non-neutron doses close to the target but become larger than non-neutron doses further away from the target. Results of WG9 studies have provided out-of-field dose levels required for an extensive set of radiotherapy techniques, including proton therapy, and involving a complete description of organ doses of pediatric patients. Such studies are needed for validating mathematical models and Monte Carlo simulation tools for out-of-field dosimetry which is essential for dedicated epidemiological studies which evaluate the risk of second cancers and other late effects for pediatric patients treated with radiotherapy.
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Affiliation(s)
- Željka Knežević
- Ruđer Bošković Institute, Zagreb, Croatia
- *Correspondence: Željka Knežević,
| | - Liliana Stolarczyk
- Danish Centre for Particle Therapy, Aarhus, Denmark
- Institute of Nuclear Physics, PAN, Krakow, Poland
| | - Iva Ambrožová
- Nuclear Physics Institute of the Czech Academy of Sciences, CAS, Řež, Czechia
| | | | - Marie Davídková
- Nuclear Physics Institute of the Czech Academy of Sciences, CAS, Řež, Czechia
| | | | | | - Kinga Jeleń
- Institute of Nuclear Physics, PAN, Krakow, Poland
- Tadeusz Kosciuszko Cracow University of Technology, Cracow, Poland
| | - Renata Kopeć
- Institute of Nuclear Physics, PAN, Krakow, Poland
| | | | | | | | | | - Maite Romero-Expósito
- Universitat Autònoma de Barcelona, Bellaterra, Spain
- Skandion Clinic, Uppsala, Sweden
| | | | - Roger M. Harrison
- University of Newcastle upon Tyne, Newcastle upon Tyne, United Kingdom
| | - Paweł Olko
- Institute of Nuclear Physics, PAN, Krakow, Poland
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Ambrožová I, Chvátil D, Cimmino A, Motta S, Olšanský V, Olšovcová V, Truneček R, Šolc J, Velyhan A, Versaci R. CHARACTERIZATION OF OSL AND TL DOSIMETERS WITH DATA COLLECTED AT THE MT25 CYCLIC ELECTRON ACCELERATOR. Phys Med 2022. [DOI: 10.1016/s1120-1797(22)01709-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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12
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Majer M, Ambrožová I, Davídková M, De Saint-Hubert M, Kasabašić M, Knežević Ž, Kopeć R, Krzempek D, Krzempek K, Miljanić S, Mojżeszek N, Veršić I, Stolarczyk L, Harrison RM, Olko P. Out-of-field doses in pediatric craniospinal irradiations with 3D-CRT, VMAT and scanning proton radiotherapy - a phantom study. Med Phys 2022; 49:2672-2683. [PMID: 35090187 DOI: 10.1002/mp.15493] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 12/01/2021] [Accepted: 01/12/2022] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Craniospinal irradiation (CSI) has greatly increased survival rates for patients with a diagnosis of medulloblastoma and other primitive neuroectodermal tumors. However, as it includes exposure of a large volume of healthy tissue to unwanted doses, there is a strong concern about the complications of the treatment, especially for the children. To estimate the risk of second cancers and other unwanted effects, out-of-field dose assessment is necessary. The purpose of this study is to evaluate and compare out-of-field doses in pediatric CSI treatment using conventional and advanced photon radiotherapy (RT) and advanced proton therapy. To our knowledge, it is the first such comparison based on in-phantom measurements. Additionally, for out-of-field doses during photon RT in this and other studies, comparisons were made using analytical modeling. METHODS In order to describe the out-of-field doses absorbed in a pediatric patient during actual clinical treatment, an anthropomorphic phantom which mimics the 10-year-old child was used. Photon 3D-conformal radiotherapy (3D-CRT) and two advanced, highly conformal techniques: photon volumetric modulated arc therapy (VMAT) and active pencil beam scanning (PBS) proton radiotherapy were used for CSI treatment. Radiophotoluminescent (RPL) and poly-allyl-diglycol-carbonate (PADC) nuclear track detectors were used for photon and neutron dosimetry in the phantom, respectively. Out-of-field doses from neutrons were expressed in terms of dose equivalent. A two-Gaussian model was implemented for out-of-field doses during photon RT. RESULTS The mean VMAT photon doses per target dose to all organs in this study were under 50% of the target dose (i.e., <500 mGy/Gy), while the mean 3D-CRT photon dose to oesophagus, gall bladder and thyroid, exceeded that value. However, for 3D-CRT, better sparing was achieved for eyes and lungs. The mean PBS photon doses for all organs were up to 3 orders of magnitude lower compared to VMAT and 3D-CRT and exceeded 10 mGy/Gy only for the oesophagus, intestine and lungs. The mean neutron dose equivalent during PBS for 8 organs of interest (thyroid, breasts, lungs, liver, stomach, gall bladder, bladder, prostate) ranged from 1.2 mSv/Gy for bladder to 23.1 mSv/Gy for breasts. Comparison of out-of-field doses in this and other phantom studies found in the literature showed that a simple and fast two-Gaussian model for out-of-field doses as a function of distance from the field edge can be applied in a CSI using photon RT techniques. CONCLUSIONS PBS is the most promising technique for out-of-field dose reduction in comparison to photon techniques. Among photon techniques, VMAT is a preferred choice for most of out-of-field organs and especially for the thyroid, while doses for eyes, breasts and lungs, are lower for 3D-CRT. For organs outside the field edge, a simple analytical model can be helpful for clinicians involved in treatment planning using photon RT but also for retrospective data analysis for cancer risk estimates and epidemiology in general. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Marija Majer
- Ruđer Bošković Institute, Zagreb, 10000, Croatia
| | - Iva Ambrožová
- Nuclear Physics Institute of the CAS, Řež, CZ-250 68, Czech Republic
| | - Marie Davídková
- Nuclear Physics Institute of the CAS, Řež, CZ-250 68, Czech Republic
| | | | - Mladen Kasabašić
- Osijek University Hospital, Osijek, 31000, Croatia.,Faculty of Medicine Osijek, J.J. Strossmayer University of Osijek, Osijek, 31000, Croatia
| | | | - Renata Kopeć
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, 31-342, Poland
| | - Dawid Krzempek
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, 31-342, Poland
| | - Katarzyna Krzempek
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, 31-342, Poland
| | | | - Natalia Mojżeszek
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, 31-342, Poland
| | - Ivan Veršić
- Department of Physics, Faculty of Science, University of Zagreb, Zagreb, 10000, Croatia
| | - Liliana Stolarczyk
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, 31-342, Poland.,Danish Center for Particle Therapy, Aarhus, Denmark
| | - Roger M Harrison
- University of Newcastle, Newcastle upon Tyne, NE2 4HH, United Kingdom
| | - Paweł Olko
- Institute of Nuclear Physics Polish Academy of Sciences, Krakow, 31-342, Poland
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13
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Wochnik A, Stolarczyk L, Ambrožová I, Davídková M, De Saint-Hubert M, Domański S, Domingo C, Knežević Ž, Kopeć R, Kuć M, Majer M, Mojżeszek N, Mares V, Martínez-Rovira I, Caballero-Pacheco MÁ, Pyszka E, Swakoń J, Trinkl S, Tisi M, Harrison R, Olko P. Out-of-field doses for scanning proton radiotherapy of shallowly located paediatric tumours-a comparison of range shifter and 3D printed compensator. Phys Med Biol 2021; 66:035012. [PMID: 33202399 DOI: 10.1088/1361-6560/abcb1f] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The lowest possible energy of proton scanning beam in cyclotron proton therapy facilities is typically between 60 and 100 MeV. Treatment of superficial lesions requires a pre-absorber to deliver doses to shallower volumes. In most of the cases a range shifter (RS) is used, but as an alternative solution, a patient-specific 3D printed proton beam compensator (BC) can be applied. A BC enables further reduction of the air gap and consequently reduction of beam scattering. Such pre-absorbers are additional sources of secondary radiation. The aim of this work was the comparison of RS and BC with respect to out-of-field doses for a simulated treatment of superficial paediatric brain tumours. EURADOS WG9 performed comparative measurements of scattered radiation in the Proteus C-235 IBA facility (Cyclotron Centre Bronowice at the Institute of Nuclear Physics, CCB IFJ PAN, Kraków, Poland) using two anthropomorphic phantoms-5 and 10 yr old-for a superficial target in the brain. Both active detectors located inside the therapy room, and passive detectors placed inside the phantoms were used. Measurements were supplemented by Monte Carlo simulation of the radiation transport. For the applied 3D printed pre-absorbers, out-of-field doses from both secondary photons and neutrons were lower than for RS. Measurements with active environmental dosimeters at five positions inside the therapy room indicated that the RS/BC ratio of the out-of-field dose was also higher than one, with a maximum of 1.7. Photon dose inside phantoms leads to higher out-of-field doses for RS than BC to almost all organs with the highest RS/BC ratio 12.5 and 13.2 for breasts for 5 and 10 yr old phantoms, respectively. For organs closest to the isocentre such as the thyroid, neutron doses were lower for BC than RS due to neutrons moderation in the target volume, but for more distant organs like bladder-conversely-lower doses for RS than BC were observed. The use of 3D printed BC as the pre-absorber placed in the near vicinity of patient in the treatment of superficial tumours does not result in the increase of secondary radiation compared to the treatment with RS, placed far from the patient.
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Affiliation(s)
- A Wochnik
- Institute of Nuclear Physics PAN, Radzikowskiego 152, Krakow 31-342, Poland
| | - L Stolarczyk
- Institute of Nuclear Physics PAN, Radzikowskiego 152, Krakow 31-342, Poland.,Skandionkliniken, von Kraemers Allé 26, Uppsala 752 37, Sweden.,Dansk Center for Partikelterapi, Palle Juul-Jensens Boulevard 25, 8200 Aarhus N, Denmark
| | - I Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute Czech Academy of Sciences, Prague CZ-250 68 Řež, Czech Republic
| | - M Davídková
- Department of Radiation Dosimetry, Nuclear Physics Institute Czech Academy of Sciences, Prague CZ-250 68 Řež, Czech Republic
| | - M De Saint-Hubert
- Belgium Nuclear Research Centre (SCK CEN), Boeretang 200, Mol BE-2400, Belgium
| | - S Domański
- National Centre for Nuclear Research, Otwock-Świerk 05-400, Poland
| | - C Domingo
- Departament de Física, Universitat Autònoma de Barcelona (UAB), Bellaterra E-08193, Spain
| | - Ž Knežević
- Ruđer Bošković Institute, Bijenička c. 54, Zagreb 10000, Croatia
| | - R Kopeć
- Institute of Nuclear Physics PAN, Radzikowskiego 152, Krakow 31-342, Poland
| | - M Kuć
- National Centre for Nuclear Research, Otwock-Świerk 05-400, Poland
| | - M Majer
- Ruđer Bošković Institute, Bijenička c. 54, Zagreb 10000, Croatia
| | - N Mojżeszek
- Institute of Nuclear Physics PAN, Radzikowskiego 152, Krakow 31-342, Poland
| | - V Mares
- Helmholtz Zentrum München, Institute of Radiation Medicine, Ingolstädter Landstraße 1, Neuherberg 85764, Germany
| | - I Martínez-Rovira
- Departament de Física, Universitat Autònoma de Barcelona (UAB), Bellaterra E-08193, Spain
| | - M Á Caballero-Pacheco
- Departament de Física, Universitat Autònoma de Barcelona (UAB), Bellaterra E-08193, Spain
| | - E Pyszka
- Institute of Nuclear Physics PAN, Radzikowskiego 152, Krakow 31-342, Poland
| | - J Swakoń
- Institute of Nuclear Physics PAN, Radzikowskiego 152, Krakow 31-342, Poland
| | - S Trinkl
- Helmholtz Zentrum München, Institute of Radiation Medicine, Ingolstädter Landstraße 1, Neuherberg 85764, Germany.,Technische Universität München, Physik-Department, Garching 85748, Germany
| | - M Tisi
- Helmholtz Zentrum München, Institute of Radiation Medicine, Ingolstädter Landstraße 1, Neuherberg 85764, Germany
| | - R Harrison
- University of Newcastle upon Tyne, Tyne and Wear, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - P Olko
- Institute of Nuclear Physics PAN, Radzikowskiego 152, Krakow 31-342, Poland
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Inozemtsev K, Kodaira S, Kusumoto T, Kitamura H, Strádi A, Szabó J, Ambrožová I, Shurshakov V. Etched track detector methods for the identification of target nuclear fragments in cosmic radiation and accelerator proton beams. RADIAT MEAS 2021. [DOI: 10.1016/j.radmeas.2020.106505] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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15
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Ambrožová I, Beck P, Benton ER, Billnert R, Bottollier-Depois JF, Caresana M, Dinar N, Domański S, Gryziński MA, Kákona M, Kolros A, Krist P, Kuć M, Kyselová D, Latocha M, Leuschner A, Lillhök J, Maciak M, Mareš V, Murawski Ł, Pozzi F, Reitz G, Schennetten K, Silari M, Šlegl J, Sommer M, Štěpán V, Trompier F, Tscherne C, Uchihori Y, Vargas A, Viererbl L, Wielunski M, Wising M, Zorloni G, Ploc O. REFLECT – Research flight of EURADOS and CRREAT: Intercomparison of various radiation dosimeters onboard aircraft. RADIAT MEAS 2020. [DOI: 10.1016/j.radmeas.2020.106433] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Zorloni G, Ambrožová I, Carbonez P, Caresana M, Ebert S, Olšovcová V, Pitzschke A, Ploc O, Pozzi F, Silari M, Trompier F, Trunecek R, Zelenka Z. Intercomparison of personal and ambient dosimeters in extremely high-dose-rate pulsed photon fields. Radiat Phys Chem Oxf Engl 1993 2020. [DOI: 10.1016/j.radphyschem.2020.108764] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Lužová M, Zaitsev AA, Bradnová V, Ambrožová I, Kákona M, Štěpán V, Košťál M, Kolros A, Ploc O, Zarubin PI. INVESTIGATION OF NUCLEAR EMULSIONS IN TERMS OF NEUTRON DOSIMETRY. Radiat Prot Dosimetry 2019; 186:229-234. [PMID: 31834927 DOI: 10.1093/rpd/ncz208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Indexed: 06/10/2023]
Abstract
Neutron detection using nuclear emulsions can offer an alternative in personal dosimetry. The production of emulsions and their quality have to be well controlled with respect to their application in dosimetry. Nuclear emulsions consist mainly of gelatin and silver halide. Gelatin contains a significant amount of hydrogen, which can be used for fast neutron detection. The addition of B-10 in the emulsion is convenient for thermal neutron detection. In this paper, standard nuclear emulsions BR-2 and nuclear emulsions BR-2 enriched with boron produced at the Slavich Company, Russia, were applied for evaluation of fast and thermal neutron fluences. The results were obtained by calculation from the presumed emulsion composition without prior calibration. Evidence that nuclear emulsions used in the experiment are suitable for neutron dosimetry is provided.
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Affiliation(s)
- Martina Lužová
- Nuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic
- Joint Institute for Nuclear Research, Joliot-Curie St 6, 141980, Dubna, Moscow region, Russia
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague, Czech Republic
| | - Andrei A Zaitsev
- Joint Institute for Nuclear Research, Joliot-Curie St 6, 141980, Dubna, Moscow region, Russia
| | - Věra Bradnová
- Joint Institute for Nuclear Research, Joliot-Curie St 6, 141980, Dubna, Moscow region, Russia
| | - Iva Ambrožová
- Nuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic
| | - Martin Kákona
- Nuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 11519 Prague, Czech Republic
| | - Václav Štěpán
- Nuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic
| | - Michal Košťál
- Research Centre Řež, Hlavní 130, 25068 Řež, Czech Republic
| | - Antonín Kolros
- Research Centre Řež, Hlavní 130, 25068 Řež, Czech Republic
| | - Ondřej Ploc
- Nuclear Physics Institute of the Czech Academy of Sciences, Řež 130, 25068 Řež, Czech Republic
| | - Pavel I Zarubin
- Joint Institute for Nuclear Research, Joliot-Curie St 6, 141980, Dubna, Moscow region, Russia
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18
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Ambrožová I, Pachnerová Brabcová K, Shurshakov VA, Tolochek RV, Kodaira S. ANGULAR DEPENDENCE OF TRACK-ETCH DETECTOR HARZLAS TD-1. Radiat Prot Dosimetry 2019; 186:219-223. [PMID: 31702766 DOI: 10.1093/rpd/ncz206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Track-etched detectors are commonly used also for radiation monitoring onboard International Space Station. To be registered in track-etched detectors, the particle needs to meet several criteria-it must have linear energy transfer above the detection threshold and strike the detector's surface under an angle higher than the so-called critical angle. Linear energy transfer is then estimated from calibration curve from the etch rate ratio V that is calculated from parameters of individual tracks appearing on the detector's surface after chemical etching. It has been observed that V can depend on the incident angle and this dependence can vary for different detector materials, etching and evaluating conditions. To investigate angular dependence, detectors (Harzlas TD-1) were irradiated at HIMAC by several ions under angles from 0° to 90°. The correction accounting not only for critical angle but also for dependence of V on the incident angle is introduced and applied to spectra measured onboard International Space Station.
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Affiliation(s)
- Iva Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, 18000 Prague, Czech Republic
| | - Kateřina Pachnerová Brabcová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the Czech Academy of Sciences, Na Truhlářce 39/64, 18000 Prague, Czech Republic
| | - Vyacheslav A Shurshakov
- Institute for Biomedical Problems of the Russian Academy of Sciences, Khoroshevskoye Shosse 76A, Moscow 123007, Russian Federation
| | - Raisa V Tolochek
- Institute for Biomedical Problems of the Russian Academy of Sciences, Khoroshevskoye Shosse 76A, Moscow 123007, Russian Federation
| | - Satoshi Kodaira
- National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage, Chiba 263-8555, Japan
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Kákona M, Kyselová D, Ambrožová I, Kubančák J, Štěpán V, Langer R, Kudela K, Ploc O. CR10-A PUBLIC DATABASE OF COSMIC RADIATION MEASUREMENTS AT AVIATION ALTITUDES OF ABOUT 10 KM. Radiat Prot Dosimetry 2019; 186:224-228. [PMID: 31711193 DOI: 10.1093/rpd/ncz207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 07/16/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
Long-term measurements using silicon radiation spectrometer Liulin on board commercial aircraft have been performed since 2001; results were put into a new database, which covers more than 4500 flights with more than 130 000 measurements. Methodology and tools were developed to normalize the data with respect to latitude and altitude and thus enable comparison with other radiation detectors and with model calculations. This capability is demonstrated using data from the neutron monitor at Lomnický štít. Instead of providing data files for individual measurement period, two software solutions are delivered. First is a web-based user interface for visualizing and downloading arbitrary time window of interest from the database hosted at http://cr10.odz.ujf.cas.cz. The second is a set of interactive Python notebooks available at GitHub. Those implement the calibration, normalization and visualization methods-so the outputs can be tailored to user needs. The software and data are provided under GNU/CC license.
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Affiliation(s)
- Martin Kákona
- Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Dagmar Kyselová
- Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Prague, Czech Republic
| | - Iva Ambrožová
- Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
| | - Ján Kubančák
- Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
| | - Václav Štěpán
- Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
| | - Ronald Langer
- Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
- Institute of Experimental Physics, Košice, Slovakia
| | - Karel Kudela
- Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
- Institute of Experimental Physics, Košice, Slovakia
| | - Ondřej Ploc
- Nuclear Physics Institute of the Czech Academy of Sciences, Prague, Czech Republic
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Šlegl J, Minářová J, Kuča P, Kolmašová I, Santolík O, Sokol Z, Reitz G, Ambrožová I, Ploc O. RESPONSE OF THE CZECH RMN NETWORK TO THUNDERSTORM ACTIVITY. Radiat Prot Dosimetry 2019; 186:215-218. [PMID: 31808537 DOI: 10.1093/rpd/ncz205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 08/14/2019] [Indexed: 06/10/2023]
Abstract
Thunderstorm ground enhancement (TGE) is a phenomenon that enhances radiation background on the ground related to thunderstorm activity and charge structure of the thundercloud. On the other hand, the rise of gamma background is connected with precipitation by the washout of radon progeny from the atmosphere. In our analysis, we examined known enhancements of gamma background, previously attributed solely to radon progeny, using data from the Czech Radiation Monitoring Network (RMN) to investigate the enhancements with respect to thunderstorms and TGE phenomena. We also used radar precipitation data and data from the lightning location network to analyze their influences on the radiation background enhancement during three thunderstorm events that occurred in summer 2016 over the Czech Republic (Central Europe). We state that the RMN might have detected TGE over the Czech Republic.
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Affiliation(s)
- J Šlegl
- Nuclear Physics Institute of the CAS, Řež 130, 250 68 Řež, Czech Republic
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, Prague 115 19, Czech Republic
| | - J Minářová
- Institute of Atmospheric Physics of the CAS, Boční II 1401, Prague 141 00, Czech Republic
| | - P Kuča
- National Radiation Protection Institute, Bartoškova 28, Prague 140 00, Czech Republic
| | - I Kolmašová
- Institute of Atmospheric Physics of the CAS, Boční II 1401, Prague 141 00, Czech Republic
- Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, Prague 121 16, Czech Republic
| | - O Santolík
- Institute of Atmospheric Physics of the CAS, Boční II 1401, Prague 141 00, Czech Republic
- Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, Prague 121 16, Czech Republic
| | - Z Sokol
- Institute of Atmospheric Physics of the CAS, Boční II 1401, Prague 141 00, Czech Republic
| | - G Reitz
- Nuclear Physics Institute of the CAS, Řež 130, 250 68 Řež, Czech Republic
| | - I Ambrožová
- Nuclear Physics Institute of the CAS, Řež 130, 250 68 Řež, Czech Republic
| | - O Ploc
- Nuclear Physics Institute of the CAS, Řež 130, 250 68 Řež, Czech Republic
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Inozemtsev KO, Kushin VV, Strádi A, Ambrožová I, Kodaira S, Szabó J, Tolochek RV, Shurshakov VA. MEASUREMENT OF DIFFERENT COMPONENTS OF SECONDARY RADIATION ONBOARD INTERNATIONAL SPACE STATION BY MEANS OF PASSIVE DETECTORS. Radiat Prot Dosimetry 2018; 181:412-417. [PMID: 29566221 DOI: 10.1093/rpd/ncy043] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 02/26/2018] [Indexed: 06/08/2023]
Abstract
The evaluation of different components of secondary radiation (charged fragments and neutrons) onboard ISS is described. Solid-state nuclear track detectors CR-39™ were applied for the measurements of short-range nuclear fragments, while the measurements of neutrons were carried out by means of thermo-luminescent dosimeters with various concentrations of 6Li and 7Li. The flux of charged secondaries and the gamma-equivalent neutron dose are presented in function of the low-LET dose in various modules of the Russian segment of ISS.
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Affiliation(s)
- K O Inozemtsev
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoye Shosse, 31, Moscow, Russian Federation
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), Khoroshevskoye Shosse, 76A, Moscow, Russian Federation
| | - V V Kushin
- National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoye Shosse, 31, Moscow, Russian Federation
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), Khoroshevskoye Shosse, 76A, Moscow, Russian Federation
| | - A Strádi
- Hungarian Academy of Sciences, Centre for Energy Research (MTA EK), Budapest, Hungary
| | - I Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlárce 39/64, Praha, Czech Republic
| | - S Kodaira
- Radiation Measurement Research Team, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1, Anagawa, Inage, Chiba, Japan
| | - J Szabó
- Hungarian Academy of Sciences, Centre for Energy Research (MTA EK), Budapest, Hungary
| | - R V Tolochek
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), Khoroshevskoye Shosse, 76A, Moscow, Russian Federation
| | - V A Shurshakov
- Institute of Biomedical Problems of the Russian Academy of Sciences (IBMP RAS), Khoroshevskoye Shosse, 76A, Moscow, Russian Federation
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Oancea C, Luu A, Ambrožová I, Mytsin G, Vondráček V, Davídková M. Perturbations of radiation field caused by titanium dental implants in pencil proton beam therapy. ACTA ACUST UNITED AC 2018; 63:215020. [DOI: 10.1088/1361-6560/aae656] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Ambrožová I, Davídková M, Brabcová KP, Tolochek RV, Shurshakov VA. CONTRIBUTION OF DIFFERENT PARTICLES MEASURED WITH TRACK ETCHED DETECTORS ONBOARD ISS. Radiat Prot Dosimetry 2018; 180:138-141. [PMID: 29036726 DOI: 10.1093/rpd/ncx189] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 09/01/2017] [Indexed: 06/07/2023]
Abstract
Cosmic radiation consists of primary high-energy galactic and solar particles. When passing through spacecraft walls and astronauts' bodies, the spectrum becomes even more complex due to generating of secondary particles through fragmentation and nuclear interactions. Total radiation exposure is contributed by both these components. With an advantage, space research uses track etched detectors from the group of passive detectors visualizing the tracks of particles, in this case by etching. The detectors can discriminate between various components of cosmic radiation. A method is introduced for the separation of the different types of particles according to their range using track etched detectors. The method is demonstrated using detectors placed in Russian segment of the International Space Station in 2009. It is shown that the primary high-energy heavy ions with long range contribute up to 56% of the absorbed dose and up to 50% to the dose equivalent.
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Affiliation(s)
- I Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlárce 39/64, Praha, Czech Republic
| | - M Davídková
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlárce 39/64, Praha, Czech Republic
| | - K Pachnerová Brabcová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlárce 39/64, Praha, Czech Republic
| | - R V Tolochek
- Institute for Biomedical Problems RAS, Khoroshevskoe Shosse 76a, Moscow, Russia
| | - V A Shurshakov
- Institute for Biomedical Problems RAS, Khoroshevskoe Shosse 76a, Moscow, Russia
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Oancea C, Ambrožová I, Popescu A, Mytsin G, Vondráček V, Davídková M. LET spectra behind high-density titanium and stainless steel hip implants irradiated with a therapeutic proton beam. RADIAT MEAS 2018. [DOI: 10.1016/j.radmeas.2018.01.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Ambrožová I, Brabcová KP, Kubančák J, Šlegl J, Tolochek RV, Ivanova OA, Shurshakov VA. Cosmic radiation monitoring at low-Earth orbit by means of thermoluminescence and plastic nuclear track detectors. RADIAT MEAS 2017. [DOI: 10.1016/j.radmeas.2016.12.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Olšovcová V, Versaci R, Ambrožová I, Zelenka Z, Kaufman J, Margarone D, Kim IJ, Jeong TM. RESPONSE OF DOSEMETERS IN FIELDS GENERATED BY LASER-ACCELERATED PROTONS. Radiat Prot Dosimetry 2016; 170:318-321. [PMID: 26979806 DOI: 10.1093/rpd/ncw037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In laser-driven acceleration, ultra-short and intense laser pulses are focussed on targets to generate beams of ionising radiation. One of the most important issues to be addressed is personal monitoring. While traditional dosemeters were designed primarily for measurements in continuous fields, dosemeters for laser laboratories must be capable of working in pulsed fields of pulse length below 1 ps, in a single-shot regime up to the repetition rate of 1 kHz. Responses of conventional dosemeters (films, polyallyldiglycol carbonate, electronic personal dosemeter) to proton bunches of up to 30 MeV energy produced by South Korean PW laser system at the Advanced Photonics Research Institute, Gwangju Institute of Science and Technology were studied, both by means of Monte Carlo simulations and experimentally.
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Affiliation(s)
- V Olšovcová
- ELI Beamlines, Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague 8, Czech Republic
| | - R Versaci
- ELI Beamlines, Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague 8, Czech Republic
| | - I Ambrožová
- Nuclear Physics Institute, Academy of Sciences of the Czech Republic, Řež 130, Czech Republic
| | - Z Zelenka
- National Personal Dosimetry Service, Na Truhlářce 39/64, Prague 8, Czech Republic
| | - J Kaufman
- ELI Beamlines, Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague 8, Czech Republic
| | - D Margarone
- ELI Beamlines, Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague 8, Czech Republic
| | - I J Kim
- Advanced Photonics Research Institute, GIST, Gwangiu 500-712, Korea Present address: Optical Instrumentation Development Team, KBSI, Daejeon 34133, Korea
| | - T M Jeong
- Advanced Photonics Research Institute, GIST, Gwangiu 500-712, Korea ELI Beamlines, Institute of Physics, Academy of Sciences of the Czech Republic, Na Slovance 2, Prague 8, Czech Republic
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Ambrožová I, Vondráček V, Šefl M, Štěpán V, Pachnerová Brabcová K, Ploc O, Incerti S, Davídková M. Microdosimetry for a carbon ion beam using track-etched detectors. Radiat Prot Dosimetry 2015; 166:247-252. [PMID: 25862534 DOI: 10.1093/rpd/ncv131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Track-etched detectors (TED) have been used as linear energy transfer (LET) spectrometers in heavy ion beams for many years. LET spectra and depth-dose distribution of a carbon ion beam were measured behind polymethylmethacrylate degraders at Heavy Ion Medical Accelerator in Chiba, Japan. The measurements were performed along monoenergetic beam with energy 290 MeV u(-1) in different positions: (1) at beam extraction area, (2) at beginning, (3) maximum and (4) behind the Bragg peak region (0, 117, 147 and 151 mm of water-equivalent depth, respectively). The LET spectra inside and outside of the primary ion beam have been evaluated. TED record only heavy charged particles with LET above 8-10 keV µm(-1), while electrons and ions with lower LET are not detected. The Geant4 simulation toolkit version 4.9.6.P01 has been used to estimate the contribution of non-detected particles to absorbed dose. Presented results demonstrate the applicability of TED for microdosimetry measurements in therapeutic carbon ion beams.
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Affiliation(s)
- I Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - V Vondráček
- Proton Therapy Center, Budínova 2437/1a, Prague 180 00, Czech Republic
| | - M Šefl
- Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, Prague 115 19, Czech Republic
| | - V Štěpán
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, Prague 180 00, Czech Republic Université de Bordeaux, CNRS/IN2P3, Centre d'Etudes Nucléaires de Bordeaux-Gradignan, CENBG, Chemin du Solarium, BP 120, Gradignan 33175, France
| | - K Pachnerová Brabcová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, Prague 180 00, Czech Republic Department of Applied Physics, Chalmers University of Technology, Fysikgränd 3, Göteborg SE-412 96, Sweden
| | - O Ploc
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - S Incerti
- Université de Bordeaux, CNRS/IN2P3, Centre d'Etudes Nucléaires de Bordeaux-Gradignan, CENBG, Chemin du Solarium, BP 120, Gradignan 33175, France
| | - M Davídková
- Department of Radiation Dosimetry, Nuclear Physics Institute of the CAS, Na Truhlářce 39/64, Prague 180 00, Czech Republic
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Sihver L, Ploc O, Puchalska M, Ambrožová I, Kubančák J, Kyselová D, Shurshakov V. Radiation environment at aviation altitudes and in space. Radiat Prot Dosimetry 2015; 164:477-483. [PMID: 25979747 DOI: 10.1093/rpd/ncv330] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
On the Earth, protection from cosmic radiation is provided by the magnetosphere and the atmosphere, but the radiation exposure increases with increasing altitude. Aircrew and especially space crew members are therefore exposed to an increased level of ionising radiation. Dosimetry onboard aircraft and spacecraft is however complicated by the presence of neutrons and high linear energy transfer particles. Film and thermoluminescent dosimeters, routinely used for ground-based personnel, do not reliably cover the range of particle types and energies found in cosmic radiation. Further, the radiation field onboard aircraft and spacecraft is not constant; its intensity and composition change mainly with altitude, geomagnetic position and solar activity (marginally also with the aircraft/spacecraft type, number of people aboard, amount of fuel etc.). The European Union Council directive 96/29/Euroatom of 1996 specifies that aircrews that could receive dose of >1 mSv y(-1) must be evaluated. The dose evaluation is routinely performed by computer programs, e.g. CARI-6, EPCARD, SIEVERT, PCAire, JISCARD and AVIDOS. Such calculations should however be carefully verified and validated. Measurements of the radiation field in aircraft are thus of a great importance. A promising option is the long-term deployment of active detectors, e.g. silicon spectrometer Liulin, TEPC Hawk and pixel detector Timepix. Outside the Earth's protective atmosphere and magnetosphere, the environment is much harsher than at aviation altitudes. In addition to the exposure to high energetic ionising cosmic radiation, there are microgravity, lack of atmosphere, psychological and psychosocial components etc. The milieu is therefore very unfriendly for any living organism. In case of solar flares, exposures of spacecraft crews may even be lethal. In this paper, long-term measurements of the radiation environment onboard Czech aircraft performed with the Liulin since 2001, as well as measurements and simulations of dose rates on and outside the International Space Station were presented. The measured and simulated results are discussed in the context of health impact.
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Affiliation(s)
- L Sihver
- Atominstitut, TU Wien, Stadionallee 2, Vienna 1020, Austria Chalmers University of Technology, Applied Physics, Göteborg, Sweden
| | - O Ploc
- Nuclear Physics Institute of the AS CR, Prague, Czech Republic
| | - M Puchalska
- Atominstitut, TU Wien, Stadionallee 2, Vienna 1020, Austria
| | - I Ambrožová
- Nuclear Physics Institute of the AS CR, Prague, Czech Republic
| | - J Kubančák
- Nuclear Physics Institute of the AS CR, Prague, Czech Republic Czech Technical University in Prague, Institute of Experimental and Applied Physics, Horská 3a/22, Prague 128 00, Czech Republic
| | - D Kyselová
- Nuclear Physics Institute of the AS CR, Prague, Czech Republic Czech Technical University in Prague, Institute of Experimental and Applied Physics, Horská 3a/22, Prague 128 00, Czech Republic
| | - V Shurshakov
- Russian Academy of Sciences, State Research Center of Russian Federation Institute of Biomedical Problems, Russia
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29
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Kubančák J, Ambrožová I, Brabcová KP, Jakůbek J, Kyselová D, Ploc O, Bemš J, Štěpán V, Uchihori Y. Comparison of cosmic rays radiation detectors on-board commercial jet aircraft. Radiat Prot Dosimetry 2015; 164:484-488. [PMID: 25979739 DOI: 10.1093/rpd/ncv331] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Aircrew members and passengers are exposed to increased rates of cosmic radiation on-board commercial jet aircraft. The annual effective doses of crew members often exceed limits for public, thus it is recommended to monitor them. In general, the doses are estimated via various computer codes and in some countries also verified by measurements. This paper describes a comparison of three cosmic rays detectors, namely of the (a) HAWK Tissue Equivalent Proportional Counter; (b) Liulin semiconductor energy deposit spectrometer and (c) TIMEPIX silicon semiconductor pixel detector, exposed to radiation fields on-board commercial Czech Airlines company jet aircraft. Measurements were performed during passenger flights from Prague to Madrid, Oslo, Tbilisi, Yekaterinburg and Almaty, and back in July and August 2011. For all flights, energy deposit spectra and absorbed doses are presented. Measured absorbed dose and dose equivalent are compared with the EPCARD code calculations. Finally, the advantages and disadvantages of all detectors are discussed.
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Affiliation(s)
- Ján Kubančák
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, Prague 180 00, Czech Republic Faculty of Nuclear Sciences and Physical Engineering, Department of Dosimetry and Application of Ionizing Radiation, Czech Technical University in Prague, Břehová 7, Prague 115 19, Czech Republic
| | - Iva Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - Kateřina Pachnerová Brabcová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - Jan Jakůbek
- Institute of Experimental and Applied Physics, Czech Technical University in Prague, Horská 3a/22, Prague 128 00, Czech Republic
| | - Dagmar Kyselová
- Faculty of Nuclear Sciences and Physical Engineering, Department of Dosimetry and Application of Ionizing Radiation, Czech Technical University in Prague, Břehová 7, Prague 115 19, Czech Republic
| | - Ondřej Ploc
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - Július Bemš
- Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, Prague 160 00, Czech Republic
| | - Václav Štěpán
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - Yukio Uchihori
- National Institute of Radiological Sciences, Chiba 263-855, Japan
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Kyselová D, Ambrožová I, Krist P, Kubančák J, Uchihori Y, Kitamura H, Ploc O. Calibration of modified Liulin detector for cosmic radiation measurements on-board aircraft. Radiat Prot Dosimetry 2015; 164:489-492. [PMID: 25979744 DOI: 10.1093/rpd/ncv332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The annual effective doses of aircrew members often exceed the limit of 1 mSv for the public due to the increased level of cosmic radiation at the flight altitudes, and thus, it is recommended to monitor them. Aircrew dosimetry is usually performed using special computer programs mostly based on results of Monte Carlo simulations. Contemporary, detectors are used mostly for validation of these computer codes, verification of effective dose calculations and for research purposes. One of such detectors is active silicon semiconductor deposited energy spectrometer Liulin. Output quantities of measurement with the Liulin detector are the absorbed dose in silicon D and the ambient dose equivalent H*(10); to determine it, two calibrations are necessary. The purpose of this work was to develop a calibration methodology that can be used to convert signal from the detector to D independently on calibration performed at Heavy Ion Medical Accelerator facility in Chiba, Japan.
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Affiliation(s)
- D Kyselová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, Prague 180 00, Czech Republic Department of Dosimetry and Application of Ionizing Radiation, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, Prague 115 19, Czech Republic
| | - I Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, Prague 180 00, Czech Republic
| | - P Krist
- Department of Accelerators, Nuclear Physics Institute ASCR, Husinec 130, Řež 250 68, Czech Republic
| | - J Kubančák
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, Prague 180 00, Czech Republic Department of Dosimetry and Application of Ionizing Radiation, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, Prague 115 19, Czech Republic
| | - Y Uchihori
- National Institute of Radiological Sciences, Chiba, Japan
| | - H Kitamura
- National Institute of Radiological Sciences, Chiba, Japan
| | - O Ploc
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, Prague 180 00, Czech Republic
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Kubančák J, Ambrožová I, Ploc O, Pachnerová Brabcová K, Štěpán V, Uchihori Y. Measurement of dose equivalent distribution on-board commercial jet aircraft. Radiat Prot Dosimetry 2014; 162:215-219. [PMID: 24344348 DOI: 10.1093/rpd/nct331] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The annual effective doses of aircrew members often exceed the limit of 1 mSv for the public due to the increased level of cosmic radiation at the flight altitudes, and thus, it is recommended to monitor them [International Commission on Radiation Protection. 1990 Recommendations of the International Commission on Radiological Protection. ICRP Publication 60. Ann. ICRP 21: (1-3), (1991)]. According to the Monte Carlo simulations [Battistoni, G., Ferrari, A., Pelliccioni, M. and Villari, R. Evaluation of the doses to aircrew members taking into consideration the aircraft structures. Adv. Space Res. 36: , 1645-1652 (2005) and Ferrari, A., Pelliccioni, M. and Villari, R. Evaluation of the influence of aircraft shielding on the aircrew exposure through an aircraft mathematical model. Radiat. Prot. Dosim. 108: (2), 91-105 (2004)], the ambient dose equivalent rate Ḣ*(10) depends on the location in the aircraft. The aim of this article is to experimentally evaluate Ḣ*(10) on-board selected types of aircraft. The authors found that Ḣ*(10) values are higher in the front and the back of the cabin and lesser in the middle of the cabin. Moreover, total dosimetry characteristics obtained in this way are in a reasonable agreement with other data, in particular with the above-mentioned simulations.
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Affiliation(s)
- J Kubančák
- Department of Dosimetry and Application of Ionizing Radiation, Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague 1, Czech Republic Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
| | - I Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
| | - O Ploc
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
| | - K Pachnerová Brabcová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
| | - V Štěpán
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, 180 00 Prague 8, Czech Republic
| | - Y Uchihori
- National Institute of Radiological Sciences, Chiba 263-8555, Japan
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Pachnerová Brabcová K, Ambrožová I, Kubančák J, Puchalska M, Vondráček V, Molokanov AG, Sihver L, Davídková M. Dose distribution outside the target volume for 170-MeV proton beam. Radiat Prot Dosimetry 2014; 161:410-416. [PMID: 24759915 DOI: 10.1093/rpd/ncu139] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Dose delivered outside the proton field during radiotherapy can potentially lead to secondary cancer development. Measurements with a 170-MeV proton beam were performed with passive detectors (track etched detectors and thermoluminescence dosemeters) in three different depths along the Bragg curve. The measurement showed an uneven decrease of the dose outside of the beam field with local enhancements. The major contribution to the delivered dose is due to high-energy protons with linear energy transfer (LET) up to 10 keV µm(-1). However, both measurement and preliminary Monte Carlo calculation also confirmed the presence of particles with higher LET.
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Affiliation(s)
- K Pachnerová Brabcová
- Department of Applied Physics, Chalmers University of Technology, Fysikgården 4, Göteborg SE-412 96, Sweden Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, 180 00 Prague, Czech Republic
| | - I Ambrožová
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, 180 00 Prague, Czech Republic
| | - J Kubančák
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, 180 00 Prague, Czech Republic Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University in Prague, Břehová 7, 115 19 Prague, Czech Republic
| | - M Puchalska
- Department of Applied Physics, Chalmers University of Technology, Fysikgården 4, Göteborg SE-412 96, Sweden
| | - V Vondráček
- Proton Therapy Center Czech, Budínova 2437/1a, 180 00 Prague, Czech Republic
| | - A G Molokanov
- Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Russia
| | - L Sihver
- Department of Applied Physics, Chalmers University of Technology, Fysikgården 4, Göteborg SE-412 96, Sweden
| | - M Davídková
- Department of Radiation Dosimetry, Nuclear Physics Institute of the ASCR, Na Truhlářce 39/64, 180 00 Prague, Czech Republic
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Ambrožová I, Brabcová K, Spurný F, Shurshakov VA, Kartsev IS, Tolochek RV. Monitoring on board spacecraft by means of passive detectors. Radiat Prot Dosimetry 2011; 144:605-610. [PMID: 20959332 DOI: 10.1093/rpd/ncq305] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
To estimate the radiation risk of astronauts during space missions, it is necessary to measure dose characteristics in various compartments of the spacecraft; this knowledge can be further used for estimating the health hazard in planned missions. This contribution presents results obtained during several missions on board the International Space Station (ISS) during 2005-09. A combination of thermoluminescent and plastic nuclear track detectors was used to measure the absorbed dose and dose equivalent. These passive detectors have several advantages, especially small dimensions, which enabled their placement at various locations in different compartments inside the ISS or inside the phantom. Variation of dosimetric quantities with the phase of the solar cycle and the position inside the ISS is discussed.
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Affiliation(s)
- I Ambrožová
- Nuclear Physics Institute, Academy of Sciences of Czech Republic, Prague, Czech Republic.
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Spurný F, Pachnerová Brabcová K, Ploc O, Ambrožová I, Mrázová Z. Spectra of linear energy transfer and other dosimetry characteristics as measured in C290 MeV/n MONO and SOBP ion beams at HIMAC-BIO (NIRS, Japan) with different detectors. Radiat Prot Dosimetry 2011; 143:519-522. [PMID: 21245064 DOI: 10.1093/rpd/ncq532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Active mobile dosimetry unit (Liulin), passive plastic nuclear track detectors (PNTD) and thermoluminescent detectors (TLD) were exposed in a C290 MeV/n beam at HIMAC-BIO (NIRS, Japan). Two different types of beam configuration were used--monoenergetic beam (MONO) and spread-out Bragg peak (SOBP); the detectors were placed at several depths from the entrance up to the depths behind the Bragg peak. Relative response of TLDs in beams has been studied as a function of the depth, and it was re-proved that it can depend on the linear energy transfer (LET). Liulin measures energy deposition in Si; the spectra of energy deposited in Si can be transformed to the spectra of lineal energy or LET. PNTDs are able to determine the LET of registered particles directly. The limitation of both methods is in the range in which they can determine the LET-Liulin is able to measure perpendicularly incident charged particles up to ∼35 keV/µm (in water), PNTD can measure from ∼7 to 400 keV/µm, independently of the registration angle. The results from both methods are compared and combined for both beams' configuration, and a good agreement is observed.
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Affiliation(s)
- F Spurný
- Department of Radiation Dosimetry, Nuclear Physics Institute, Czech Academy of Sciences, Na Truhlářce 39/64, 18086 Praha 8, Czech Republic
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Pachnerová Brabcová K, Ambrožová I, Spurný F. Spectrometry of linear energy transfer with track-etched detectors in carbon ion beams, MONO and SOBP. Radiat Prot Dosimetry 2011; 143:440-444. [PMID: 21156782 DOI: 10.1093/rpd/ncq471] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Five various materials employed as track-etched detectors (TEDs) were exposed in beams of carbon ions with energy 290 MeV. u(-1) in the HIMAC-BIO facility in Japan. The exposures were performed behind various types of polymethyl methacrylate shielding. The beam had two possible set-ups--monoenergetic set-up and modulated spread-out Bragg peak set-up. All used TEDs are polyallyl diglycol carbonates (PADCs): Page from Mouldings (Pershore) Ltd, Tastrak from Track Analysis Systems Ltd, both from the UK; USF4 from American Technical Plastics from the USA and two products of Japan Fukuvi Chemical Industry Co., Ltd--TD1 and Baryotrak. Spectra of linear energy transfer and depth-dose distributions were obtained. Besides, differences among PADCs are discussed.
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Affiliation(s)
- K Pachnerová Brabcová
- Department of Radiation Dosimetry, Nuclear Physics Institute, AS CR, Prague, Czech Republic.
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