Alignment of the Alpha Magnetic Spectrometer (AMS) in space
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10052_2023_Article_11395.pdf
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6.51 MB
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63681691ab917cb2763a0a17bad0e2d4
Author(s)
Yan, Qi
Choutko, Vitaly
Date Issued
March 23, 2023
Publisher
Springer Berlin Heidelberg
Citation
The European Physical Journal C. 2023 Mar 23;83(3):245
Version
Final published version
Abstract
Abstract
The Alpha Magnetic Spectrometer (AMS) is a precision particle physics detector operating at an altitude of
$$\sim 410$$
∼
410
km aboard the International Space Station. The AMS silicon tracker, together with the permanent magnet, measures the rigidity (momentum/charge) of cosmic rays in the range from
$$\sim 0.5$$
∼
0.5
GV to several TV. In order to have accurate rigidity measurements, the positions of more than 2000 tracker modules have to be determined at the micron level by an alignment procedure. The tracker was first aligned using the 400 GeV/c proton test beam at CERN and then re-aligned using cosmic-ray events after being launched into space. A unique method to align the permanent magnetic spectrometer for a space experiment is presented. The developed underlying mathematical algorithm is discussed in detail.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1140/epjc/s10052-023-11395-0
