Large-area Si(Li) Detectors for X-ray Spectrometry and Particle Tracking for the GAPS Experiment

Field Rogers, Mengjiao Xiao, Kerstin Perez, Steven Boggs, Tyler Erjavec, Lorenzo Fabris, Hideyuki Fuke, Charles J. Hailey, Masayoshi Kozai, Alex Lowell, Norman Madden, Massimo Manghisoni, Steve McBride, Valerio Re, Elisa Riceputi, Nathan Saffold, Yuki Shimizu, Gianluigi Zampa

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Large-area lithium-drifted silicon (Si(Li)) detectors, operable 150°C above liquid nitrogen temperature, have been developed for the General Antiparticle Spectrometer (GAPS) balloon mission and will form the first such system to operate in space. These 10 cm-diameter, 2.5 mm-thick multi-strip detectors have been verified in the lab to provide < 4 keV FWHM energy resolution for X-rays as well as tracking capability for charged particles, while operating in conditions (~-40C and ~1 Pa) achievable on a long-duration balloon mission with a large detector payload. These characteristics enable the GAPS silicon tracker system to identify cosmic antinuclei via a novel technique based on exotic atom formation, de-excitation, and annihilation. Production and large-scale calibration of ~1000 detectors has begun for the first GAPS flight, scheduled for late 2021. The detectors developed for GAPS may also have other applications, for example in heavy nuclei identification.

Original languageEnglish
Title of host publication2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728141640
DOIs
StatePublished - Oct 2019
Event2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019 - Manchester, United Kingdom
Duration: Oct 26 2019Nov 2 2019

Publication series

Name2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019

Conference

Conference2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019
Country/TerritoryUnited Kingdom
CityManchester
Period10/26/1911/2/19

Funding

This work was supported in part by the NASA APRA program through Grant Nos. NNX17AB44G and NNX17AB46G. Manuscript received December 12, 2019. K. Perez receives support from the Heising-Simons Foundation and the Alfred P. Sloan Foundation. F. Rogers is supported through the National Science Foundation Graduate Research Fellowship under Grant No. 1122374. M. Kozai is supported by the JSPS KAKENHI under Grant No. JP17K14313. H. Fuke is supported by the JSPS KAKENHI under Grant Nos. JP2670715 and JP17H01136. M. Manghisoni, V. Re, E. Riceputi, and G. Zampa are supported by the Italian Space Agency through the ASI INFN agreement n. 2018-28-HH.0: ”Partecipazione italiana al GAPS - General AntiParticle Spectrometer”.

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