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Large-area Si(Li) Detectors for X-ray Spectrometry and Particle Tracking for the GAPS Experiment
Name
1912.06571.pdf
Description
Accepted version
Size
3.09 MB
Format
Adobe PDF
Checksum (MD5)
7cf7e43e9ae79e8e2760c53d9999a830
Author(s)
Rogers, Field
Xiao, Mengjiao
Perez, Kerstin
Boggs, Steven
Erjavec, Tyler
Fabris, Lorenzo
Fuke, Hideyuki
Hailey, Charles J
Kozai, Masayoshi
Lowell, Alex
Journal
2019 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2019
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Version
Author's final manuscript
Abstract
© 2019 IEEE. 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.
Terms of Use
Creative Commons Attribution-Noncommercial-Share Alike
Persistent DSpace Link
DOI of Published Version
10.1109/NSS/MIC42101.2019.9060023
