Characterization of high-sensitivity cryogenic detectors' susceptibility to cosmic rays

Le résumé fourni par la source

Future space missions and balloon-borne experiments are always in need of larger number of highly sensitive cryogenic detectors. Upcoming technologies currently under development will undoubtedly be affected by cosmic rays, resulting in heat dissipation spreading through the detector arrays and creating spurious signals in the data, referred to as “glitches”. Furthermore, during a typical space mission lifetime, the cumulative cosmic rays impacts may degrade the performance of the detectors. To characterize the susceptibility of the new generation of detectors to high-energy particles, IAS has developed DRACuLA, a cryogenic test facility that can host detectors or parts of focal planes. It can be adapted to particle accelerators to irradiate the devices at their operating temperature (50 mK to 800 mK). To date, three successful proton irradiation campaigns have been carried out on three different technologies: composite bolometer, TES, and KID. DRACuLA coupled to a particle beam line enables different types of irradiation: single-event irradiation which, combined with pulse shape analysis allows access to the time constant, and total-dose irradiation simulating several years of operation in space, allowing to check for potential performance degradation over time. Here, we present the DRACuLA cryogenic facility together with the main results of the TES and KID irradiation campaigns, two technologies to be used in future space and balloon borne observatories.

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.