Radiation effects induced by the energetic protons in 8x8x32 mm3 CdZnTe detectors

Bolotnikov, A.; Carini, G.; Chekhlov, M.; Dellapenna, A.; Fried, J.; Haupt, J.; Herrmann, S.; Kotov, I.; Kotov, I.; Medvedev, D.; Moiseev, A.; Pinaroli, G.; Rusek, A.; Sasaki, M.; Sivertz, M.; Smith, L.; Yates, E.

doi:10.1016/j.nima.2022.166927

Title: Radiation effects induced by the energetic protons in 8x8x32 mm3 CdZnTe detectors

Journal Article · Thu Jun 09 00:00:00 EDT 2022 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI:https://doi.org/10.1016/j.nima.2022.166927· OSTI ID:1870388

Bolotnikov, A. ^[1]; Carini, G. ^[1];

^[1]; Dellapenna, A. ^[1]; Fried, J. ^[1]; Haupt, J. ^[1]; Herrmann, S. ^[1];

^[1];

^[1]; Medvedev, D. ^[1];

^[2]; Pinaroli, G. ^[1]; Rusek, A. ^[1]; Sasaki, M. ^[2];

^[1];

^[3];

^[3]

Brookhaven National Lab. (BNL), Upton, NY (United States)
Univ. of Maryland, College Park, MD (United States); NASA Goddard Space Flight Center (GSFC), Greenbelt, MD (United States)
Univ. of Maryland, College Park, MD (United States)

We report CdZnTe (CZT) detectors have been used in the past and are being actively considered for future gamma-ray space telescopes. One of the challenges of operating CZT detectors in low Earth orbit is radiation damage caused by energetic protons. Previous studies concluded that fluences of 10⁸ -10⁹ p/cm² are sufficient to cause shifting of peak positions and degradations of energy resolution. Degradation of detectors after proton irradiation has been extensively investigated to determine their radiation resistance limits and performance recovering procedures for their applications in space and nuclear nonproliferation. Here we present the study of radiation effects induced by 100 MeV protons in 3-cm long CdZnTe detectors that we recently proposed for the gamma-ray telescope GECCO. The goal this study is to evaluate the feasibility of using such long CZT detectors in future space missions.

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Research Organization:: Brookhaven National Laboratory (BNL), Upton, NY (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA); National Aeronautics and Space Administration (NASA)

Grant/Contract Number:: SC0012704; AC02-98CH1886; 80GSFC21M0002; 80NSSC20K057

OSTI ID:: 1870388

Report Number(s):: BNL-223015-2022-JAAM; TRN: US2306521

Journal Information:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1039; ISSN 0168-9002

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

References (11)

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Performance of 8 $\times 8 \times$ 32 and 10 $\times 10 \times$ 32 mm3 CdZnTe position-sensitive virtual Frisch-grid detectors for high-energy gamma ray cameras Bolotnikov, A. E.; MacKenzie, J.; Chen, E. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 969 https://doi.org/10.1016/j.nima.2020.164005	journal	July 2020
A $4 \times 4$ array module of position-sensitive virtual Frisch-grid CdZnTe detectors for gamma-ray imaging spectrometers Bolotnikov, A. E.; Camarda, G. S.; Geronimo, G. De Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 954 https://doi.org/10.1016/j.nima.2018.07.090	journal	February 2020
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