1
|
Flammini D, Chaudhary A, Colangeli A, Fonnesu N, Guirao J, Gupta K, Kalwale S, Mariano G, Moro F, Previti A, Quatrevaux M, Shigin P, Udintsev V, Villari R. Neutronic analyses for the equatorial diagnostic port plug #12 in ITER. Fusion Engineering and Design 2023. [DOI: 10.1016/j.fusengdes.2023.113639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/07/2023]
|
2
|
Colangeli A, Flammini D, Fonnesu N, Garavaglia S, Granucci G, Luis R, Mariano G, Moro F, Romano A, Remetti R, Villari R. Neutron streaming analyses and shielding optimization through ECRH openings in DTT Tokamak building. Fusion Engineering and Design 2021. [DOI: 10.1016/j.fusengdes.2021.112690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
3
|
Moro F, Arena P, Catanzaro I, Colangeli A, Del Nevo A, Flammini D, Fonnesu N, Forte R, Imbriani V, Mariano G, Mozzillo R, Noce S, Villari R. Nuclear performances of the water-cooled lithium lead DEMO reactor: Neutronic analysis on a fully heterogeneous model. Fusion Engineering and Design 2021. [DOI: 10.1016/j.fusengdes.2021.112514] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
4
|
Moro F, Colangeli A, Del Nevo A, Flammini D, Mariano G, Martelli E, Mozzillo R, Noce S, Villari R. Nuclear analysis of the Water cooled lithium lead DEMO reactor. Fusion Engineering and Design 2020. [DOI: 10.1016/j.fusengdes.2020.111833] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
5
|
Abstract
An experimental procedure is assessed to obtain moderated neutron fields starting from almost monochromatic 14 MeV neutrons generated by means of an accelerator-driven D-T source. The use of a metallic pre-moderator and a standard hydrogen-containing moderator is effective in producing neutron spectra featuring a thermal peak and an epithermal slowing down tail extending up to 14 MeV. The performance of proposed moderation system was investigated by means of MCNP Monte Carlo calculations, benchmarked against experimental measurements using an explorative set up, assembled at the Frascati Neutron Generator. The benchmarked calculations allow at making predictions about the brilliance of a 14 MeV neutron moderator in view of possible applications in neutron science.
Collapse
Affiliation(s)
- D. Flammini
- ENEA Dept. Fusion and Technologies for Nuclear Safety and Security, Frascati, Roma, Italy. E-mails: , ,
| | - R. Bedogni
- Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Frascati, Roma, Italy. E-mail:
| | - F. Moro
- ENEA Dept. Fusion and Technologies for Nuclear Safety and Security, Frascati, Roma, Italy. E-mails: , ,
| | - A. Pietropaolo
- ENEA Dept. Fusion and Technologies for Nuclear Safety and Security, Frascati, Roma, Italy. E-mails: , ,
| |
Collapse
|
6
|
Andreoli F, Angelone M, Colangeli A, Besi Vetrella U, Fiore S, Flammini D, Del Prete P, Loreti S, Mariano G, Mazzitelli G, Moro F, Pagano G, Pietropaolo A, Pillon M, Terranova N, Villari R, Naish J, Nobs C, Packer L. Comparison between measurement and calculations for a 14 MeV neutron water activation experiment. EPJ Web Conf 2020. [DOI: 10.1051/epjconf/202023921002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
The nuclear heat loads due to gamma rays emitted from the decay of 16N and delayed neutrons from17N, generated by the activation of water in cooling circuits, are critical for ITER design. The assessment of nuclear heating from activated water is complex; it requires temporal and spatial dependent transport and activation calculations taking into account variation of irradiation, water flow conditions and cooling circuits’ parameters. A water activation experiment has been recently conducted at the14 MeV Frascati Neutron Generator (FNG) in order to validate the methodology for water activation assessment used for ITER and to reduce the safety factors applied to the calculation results, which have a large impact on the schedule, commissioning and licensing. Water circulating inside an ITER First Wall (FW) mock-up was irradiated with 14 MeV neutrons and then measured using a large CsI scintillator detector. The system consists of a closed water loop where the cooling water, transiting through an ITER FW mock-up, is irradiated by FNG. The induced 16N activity via 14 MeV neutrons interactions with 16O via the 16O(n,p)16N reaction is measured in a dedicated counting station via an expansion volume. The water then passes to a much larger holding delay tank, and after several 16N half-lives decay time, it is then recirculated and exposed again to neutrons in the ITER First Wall (FW) mock-up. The measured 16N activity is obtained measuring the emitted characteristic 6.13 and 7.12 MeV gamma-rays. Calculations were performed in an accurate model of the FW mock-up using the MCNP Monte Carlo code and FENDL-3.1 nuclear data library to obtain the predicted flux impinging on the water. The EASY-2007 inventory code was used to predict the 16N activity. In this work, a comparison between measurements and calculations is reported together with associated uncertainty analysis.
Collapse
|
7
|
Flammini D, Angelone M, Caiffi B, Colangeli A, Fonnesu N, Mariano G, Moro F, Villari R. Pre-analysis of the WCLL breeding blanket mock-up neutronics experiment at the frascati neutron generator. Fusion Engineering and Design 2020. [DOI: 10.1016/j.fusengdes.2020.111600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
8
|
Colangeli A, Villari R, Luis R, Moro F, Sandri S, Fonnesu N, Flammini D, Mariano G, Crisanti F, Ramogida G, Lucca F, Mazzitelli G. Neutronics study for DTT tokamak building. Fusion Engineering and Design 2019. [DOI: 10.1016/j.fusengdes.2019.04.047] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
9
|
Villari R, Batistoni P, Bradnam S, Colling B, Fischer U, Flammini D, Fonnesu N, Ghani Z, Klix A, Loreti S, Naish J, Packer L, Pillon M, Popovichev S, Stamatelatos I, Vasilopoulou T. Shutdown dose rate neutronics experiment during high performances DD operations at JET. Fusion Engineering and Design 2018. [DOI: 10.1016/j.fusengdes.2018.05.053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
|
10
|
Fischer U, Bachmann C, Catalan J, Eade T, Flammini D, Gilbert M, Jaboulay JC, Konobeev A, Leichtle D, Lu L, Malouch F, Moro F, Pereslavtsev P, Qiu Y, Sanz J, Sauvan P, Stankunas G, Travleev A, Turner A, Ogando F, Palermo I, Villari R. Methodological approach for DEMO neutronics in the European PPPT programme: Tools, data and analyses. Fusion Engineering and Design 2017. [DOI: 10.1016/j.fusengdes.2017.01.053] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
11
|
Moro F, Marocco D, Esposito B, Flammini D, Podda S, Villari R, Conroy S. Nuclear analysis of the ITER radial neutron camera architectural options. Fusion Engineering and Design 2017. [DOI: 10.1016/j.fusengdes.2017.01.031] [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] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
12
|
Angelone M, Flammini D, Loreti S, Moro F, Pillon M, Villar R, Klix A, Fischer U, Kodeli I, Perel R, Pohorecky W. Copper benchmark experiment for the testing of JEFF-3.2 nuclear data for fusion applications. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201714609004] [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: 11/14/2022] Open
|
13
|
Flammini D, Pilotti R, Pietropaolo A. A possible approach to 14MeV neutron moderation: A preliminary study case. Appl Radiat Isot 2017; 125:129-133. [PMID: 28431337 DOI: 10.1016/j.apradiso.2017.04.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [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: 02/06/2017] [Revised: 04/05/2017] [Accepted: 04/10/2017] [Indexed: 11/16/2022]
Abstract
Deuterium-Tritium (D-T) interactions produce almost monochromatic neutrons with about 14MeV energy. These neutrons are used in benchmark experiments as well as for neutron cross sections assessment in fusion reactors technology. The possibility to moderate 14MeV neutrons for purposes beyond fusion is worth to be studied in relation to projects of intense D-T sources. In this preliminary study, carried out using the MCNP Monte Carlo code, the moderation of 14MeV neutrons is approached foreseeing the use of combination of metallic materials as pre-moderator and reflectors coupled to standard water moderators.
Collapse
Affiliation(s)
- D Flammini
- ENEA Department of Fusion and Technologies for Nuclear Safety and Security, via E, Fermi 45, 00044 Frascati Roma, Italy
| | - R Pilotti
- Università degli Studi di Roma Tor Vergata Department of Industrial Engineering, via del Politecnico 1, 00127 Roma, Italy
| | - A Pietropaolo
- ENEA Department of Fusion and Technologies for Nuclear Safety and Security, via E, Fermi 45, 00044 Frascati Roma, Italy.
| |
Collapse
|
14
|
Angelone M, Flammini D, Loreti S, Moro F, Pillon M, Villari R. Copper benchmark experiment at the Frascati Neutron Generator for nuclear data validation. Fusion Engineering and Design 2016. [DOI: 10.1016/j.fusengdes.2016.01.065] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
15
|
Angelone M, Fischer U, Flammini D, Jodlowski P, Klix A, Kodeli I, Kuc T, Leichtle D, Lilley S, Majerle M, Novák J, Ostachowicz B, Packer L, Pillon M, Pohorecki W, Radulović V, Šimečková E, Štefánik M, Villari R. Neutronics experiments, radiation detectors and nuclear techniques development in the EU in support of the TBM design for ITER. Fusion Engineering and Design 2015. [DOI: 10.1016/j.fusengdes.2015.06.114] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
16
|
Flammini D, Pietropaolo A, Senesi R, Andreani C, McBride F, Hodgson A, Adams MA, Lin L, Car R. Spherical momentum distribution of the protons in hexagonal ice from modeling of inelastic neutron scattering data. J Chem Phys 2012; 136:024504. [DOI: 10.1063/1.3675838] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
17
|
Flammini D, Ricci MA, Bruni F. A new water anomaly: The temperature dependence of the proton mean kinetic energy. J Chem Phys 2009; 130:236101. [DOI: 10.1063/1.3142700] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
|
18
|
Forchetti C, Flammini D, Carlucci G, Cavicchio G, Vaggi L, Bologna M. High-performance liquid chromatographic procedure for the quantitation of norfloxacin in urine, serum and tissues. J Chromatogr 1984; 309:177-82. [PMID: 6237115 DOI: 10.1016/0378-4347(84)80021-3] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|