Proton Radiation Damage and Annealing of COSI p-type Cross-strip HPGe Detectors
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866912327951974400 |
|---|---|
| author | Haight, Sophia E. Boggs, Steven E. Brewster, Gabriel Pike, Sean N. Roberts, Jarred M. Shih, Albert Y. Szornel, Joanna M. Tomsick, John A. Valluvan, Aravind B. Zoglauer, Andreas |
| author_facet | Haight, Sophia E. Boggs, Steven E. Brewster, Gabriel Pike, Sean N. Roberts, Jarred M. Shih, Albert Y. Szornel, Joanna M. Tomsick, John A. Valluvan, Aravind B. Zoglauer, Andreas |
| contents | In order to understand the effects of a space radiation environment on cross-strip germanium detectors, we investigated the effects of high-energy proton damage on a COSI detector and the capabilities of high-temperature annealing in repairing detector spectral resolution. We irradiated a COSI-balloon cross-strip high-purity germanium (HPGe) detector with 150 MeV protons resulting in a net fluence of $4.95\times10^8$ p$^+$/cm$^2$ and corresponding to ~10 years in COSI's space radiation environment. We repaired the resulting degradation in spectral resolution through a series of high-temperature anneals to obtain a final FWHM of 4.08 keV, within 37% of its preradiation value (2.98 keV FWHM). We characterized the repair of charge traps with time spent under high-temperature anneal to inform an annealing procedure for long-term maintenance of COSI's spectral resolution. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_02412 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Proton Radiation Damage and Annealing of COSI p-type Cross-strip HPGe Detectors Haight, Sophia E. Boggs, Steven E. Brewster, Gabriel Pike, Sean N. Roberts, Jarred M. Shih, Albert Y. Szornel, Joanna M. Tomsick, John A. Valluvan, Aravind B. Zoglauer, Andreas Instrumentation and Detectors Instrumentation and Methods for Astrophysics Nuclear Experiment In order to understand the effects of a space radiation environment on cross-strip germanium detectors, we investigated the effects of high-energy proton damage on a COSI detector and the capabilities of high-temperature annealing in repairing detector spectral resolution. We irradiated a COSI-balloon cross-strip high-purity germanium (HPGe) detector with 150 MeV protons resulting in a net fluence of $4.95\times10^8$ p$^+$/cm$^2$ and corresponding to ~10 years in COSI's space radiation environment. We repaired the resulting degradation in spectral resolution through a series of high-temperature anneals to obtain a final FWHM of 4.08 keV, within 37% of its preradiation value (2.98 keV FWHM). We characterized the repair of charge traps with time spent under high-temperature anneal to inform an annealing procedure for long-term maintenance of COSI's spectral resolution. |
| title | Proton Radiation Damage and Annealing of COSI p-type Cross-strip HPGe Detectors |
| topic | Instrumentation and Detectors Instrumentation and Methods for Astrophysics Nuclear Experiment |
| url | https://arxiv.org/abs/2501.02412 |