Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The AMS-01 Aerogel Threshold Cherenkov counter   The Alpha Magnetic Spectrometer in a precursor version (AMS-01), was flown in
June 1998 on a 51.6 degrees orbit and at altitudes ranging between 320 and 390
km, on board of the space shuttle Discovery (flight STS-91). AMS-01 included an
Aerogel Threshold Cherenkov counter (ATC) to separate antiprotons from
electrons and positrons from protons, for momenta below 3.5 GeV/c. This paper
presents a description of the ATC counter and reports on its performances
during the flight STS-91.

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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: math
4
The categories of this paper are: cond-mat
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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: cs
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The categories of this paper are: adap-org
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The categories of this paper are: stat
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga
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The categories of this paper are: econ
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The categories of this paper are: physics
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The categories of this paper are: hep-th