Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The CLAS Electromagnetic Calorimeter at Large Angles   The study of the response of the two modules of the large-angle
electromagnetic shower calorimeter (LAC) of the CLAS detector to charged and
neutral particles is reported. The results agree very well with the Monte Carlo
simulation. The procedures adopted for the energy and timing calibration are
also discussed, proving that the module geometry allows for simple
self-calibrating energy and timing algorithms.

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The categories of this paper are: astro-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: ao-sci
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: hep-th
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The categories of this paper are: supr-con
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The categories of this paper are: nucl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: math
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg