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Mianowski S, De Angelis N, Brylew K, Hulsman J, Kowalski T, Kusyk S, Mianowska Z, Mietelski J, Rybka D, Swakon J, Wrobel D. Proton irradiation of plastic scintillator bars for POLAR-2. EXPERIMENTAL ASTRONOMY 2023; 56:355-370. [PMID: 38145002 PMCID: PMC10746763 DOI: 10.1007/s10686-023-09906-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 06/21/2023] [Indexed: 12/26/2023]
Abstract
POLAR-2, a plastic scintillator based Compton polarimeter, is currently under development and planned for a launch to the China Space Station in 2025. It is intended to shed a new light on our understanding of Gamma-Ray Bursts by performing high precision polarization measurements of their prompt emission. The instrument will be orbiting at an average altitude of 383 km with an inclination of 42° and will be subject to background radiation from cosmic rays and solar events. In this work, we tested the performance of plastic scintillation bars, EJ-200 and EJ-248M from Eljen Technology, under space-like conditions, that were chosen as possible candidates for POLAR-2. Both scintillator types were irradiated with 58 MeV protons at several doses from 1.89 Gy(corresponding to about 13 years in space for POLAR-2) up to 18.7 Gy, that goes far beyond the expected POLAR-2 life time. Their respective properties, expressed in terms of light yield, emission and absorption spectra, and activation analysis due to proton irradiation are discussed. Scintillators activation analyses showed a dominant contribution of β + decay with a typical for this process gamma-ray energy line of 511 keV.
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Affiliation(s)
- Slawomir Mianowski
- National Centre for Nuclear Research, A. Soltana 7 Street, 05400 Otwock, Poland
| | - Nicolas De Angelis
- DPNC, University of Geneva, 24 Quai Ernest-Ansermet, CH-1205 Geneva, Switzerland
| | - Kamil Brylew
- National Centre for Nuclear Research, A. Soltana 7 Street, 05400 Otwock, Poland
| | - Johannes Hulsman
- DPNC, University of Geneva, 24 Quai Ernest-Ansermet, CH-1205 Geneva, Switzerland
| | - Tomasz Kowalski
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152 Street, 31342 Krakow, Poland
| | - Sebastian Kusyk
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152 Street, 31342 Krakow, Poland
| | - Zuzanna Mianowska
- National Centre for Nuclear Research, A. Soltana 7 Street, 05400 Otwock, Poland
| | - Jerzy Mietelski
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152 Street, 31342 Krakow, Poland
| | - Dominik Rybka
- National Centre for Nuclear Research, A. Soltana 7 Street, 05400 Otwock, Poland
| | - Jan Swakon
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152 Street, 31342 Krakow, Poland
| | - Damian Wrobel
- Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152 Street, 31342 Krakow, Poland
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