Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Performance of Resistive Plate Chambers installed during the first long
  shutdown of the CMS experiment   The CMS experiment, located at the CERN Large Hadron Collider, has a
redundant muon system composed by three different detector technologies:
Cathode Strip Chambers (in the forward regions), Drift Tubes (in the central
region) and Resistive Plate Chambers (both its central and forward regions).
All three are used for muon reconstruction and triggering. During the first
long shutdown (LS1) of the LHC (2013-2014) the CMS muon system has been
upgraded with 144 newly installed RPCs on the forth forward stations. The new
chambers ensure and enhance the muon trigger efficiency in the high luminosity
conditions of the LHC Run2. The chambers have been successfully installed and
commissioned. The system has been run successfully and experimental data has
been collected and analyzed. The performance results of the newly installed
RPCs will be presented.

28
The categories of this paper are: alg-geom
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph
23
The categories of this paper are: solv-int
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
16
The categories of this paper are: stat
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph