Fabrication of low-cost, large-area prototype Si(Li) detectors for the GAPS experiment
Name
Perez_Fabrication of low-cost.pdf
Description
Accepted version
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2.19 MB
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Author(s)
Perez, Kerstin M.
Aramaki, Tsuguo
Hailey, Charles J.
Carr, Rachel
Erjavec, Tyler J
Fuke, Hideyuki
Garvin, Amani
Harper, Cassia
Kewley, Glenn
Madden, Norman
Date Issued
October 2018
Journal
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Publisher
Elsevier BV
Citation
Perez, Kerstin et al. "Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment." 905 (October 2018): 12-21 © 2018 Elsevier B.V.
Version
Author's final manuscript
Abstract
A Si(Li) detector fabrication procedure has been developed with the aim of satisfying the unique requirements of the GAPS (General Antiparticle Spectrometer) experiment. Si(Li) detectors are particularly well-suited to the GAPS detection scheme, in which several planes of detectors act as the target to slow and capture an incoming antiparticle into an exotic atom, as well as the spectrometer and tracker to measure the resulting decay X-rays and annihilation products. These detectors must provide the absorption depth, energy resolution, tracking efficiency, and active area necessary for this technique, all within the significant temperature, power, and cost constraints of an Antarctic long-duration balloon flight. We report here on the fabrication and performance of prototype 2′′-diameter, 1–1.25 mm-thick, single-strip Si(Li) detectors that provide the necessary X-ray energy resolution of ∼4 keV for a cost per unit area that is far below that of previously-acquired commercial detectors. This fabrication procedure is currently being optimized for the 4′′-diameter, 2.5 mm-thick, multi-strip geometry that will be used for the GAPS flight detectors.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Department of Nuclear Science and Engineering
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Creative Commons Attribution-NonCommercial-NoDerivs License
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DOI of Published Version
https://doi.org/10.1016/j.nima.2018.07.024
