Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Plans for Spin Physics at RHIC   Polarized proton collisions will be studied at RHIC up to a total center of
mass energy of 500 GeV, starting in 2002. An overview of the RHIC-spin program,
and the critical components of the PHENIX and STAR detectors for spin
experiments, is presented. The premier experiment within the RHIC-spin program
is the determination of the fraction of the proton's spin carried by gluons. A
detailed analysis of how accurately this fraction can be determined by the STAR
experiment at RHIC is presented.

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The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
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The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: physics
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The categories of this paper are: patt-sol
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The categories of this paper are: math
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The categories of this paper are: cmp-lg
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The categories of this paper are: chao-dyn
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The categories of this paper are: comp-gas
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The categories of this paper are: q-bio
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: stat