Effects of proton irradiation on the performance of skipper CCDs

Brandon Roach; Brenda A. Cervantes Vergara; Santiago Perez; Alex Drlica-Wagner; Juan Estrada; Abhishek Bakshi

doi:10.1117/12.3018348

27 August 2024 Effects of proton irradiation on the performance of skipper CCDs

Brandon Roach, Brenda A. Cervantes Vergara, Santiago Perez, Alex Drlica-Wagner, Juan Estrada, Abhishek Bakshi

Author Affiliations +

Proceedings Volume 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI; 131030G (2024) https://doi.org/10.1117/12.3018348
Event: SPIE Astronomical Telescopes + Instrumentation, 2024, Yokohama, Japan

Abstract

Skipper CCDs are a mature detector technology that has been suggested for future space telescope instruments requiring sub-electron readout noise in the near-ultraviolet to the near-infrared. While modern skipper CCDs inherit from the radiation-tolerant p-channel detectors developed by LBNL, the effects of high doses of ionizing radiation on skipper CCDs (such as those expected in space) remains largely unmeasured. We report preliminary results on the performance of p-channel skipper CCDs following irradiation with 217-MeV protons at the Northwestern Medicine Proton Center. The total nonionizing energy loss (NIEL) experienced by the detectors exceeds 6 years at the Sun-Earth Lagrange Point 2 (L2). We demonstrate that the skipper amplifier continues to function as expected following this irradiation. Owing to the low readout noise of these detectors, controlled irradiation tests can be used to sensitively characterize the charge transfer inefficiency, dark current, and the density and time constants of charge traps as a function of proton fluence. We conclude with a brief outlook toward future tests of these detectors at other proton and gamma-ray facilities.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Brandon Roach, Brenda A. Cervantes Vergara, Santiago Perez, Alex Drlica-Wagner, Juan Estrada, and Abhishek Bakshi "Effects of proton irradiation on the performance of skipper CCDs", Proc. SPIE 13103, X-Ray, Optical, and Infrared Detectors for Astronomy XI, 131030G (27 August 2024); https://doi.org/10.1117/12.3018348

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