Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: First Years of Running for the LHCb Calorimeter System   The calorimeter system of LHCb is subdivided into four sub-detectors which
ensure its longitudinal segmentation: a Scintillator Pad Detector (SPD)
followed by a Preshower (PS) and then an electromagnetic (ECAL) an hadronic
(HCAL) calorimeter. After a description of these detectors, procedures
developed to calibrate their response are discussed together with the
degradation of response observed due to the harsh conditions (hard radiation
and high current). First results on the calorimeter performance over the two
most productive years of physics data taking, 2011 and 2012 are given.

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The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
36
The categories of this paper are: cmp-lg
37
The categories of this paper are: supr-con
30
The categories of this paper are: q-alg
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The categories of this paper are: math
4
The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
33
The categories of this paper are: plasm-ph