Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evolution studies of the CMS ECAL endcap response and upgrade design
  options for High-Luminosity LHC   High-Luminosity running at the LHC, which is planned for 2022 and beyond,
will imply an order of magnitude increase in radiation levels and particle
fluences with respect to the present LHC running conditions. The performance
evolution of the CMS electromagnetic calorimeter (ECAL), comprising 75,848
scintillating lead tungstate crystals, indicates that an upgrade of its endcaps
will be needed for HL-LHC running, to ensure an adequate performance. Results
from LHC collision periods, beam tests and laboratory measurements of
proton-irradiated crystals are combined to predict the performance of the
current detector at the HL-LHC. In addition, an overview is given of various R
and D studies towards a replacement of the ECAL endcaps for the HL-LHC running
period.

29
The categories of this paper are: funct-an
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
30
The categories of this paper are: q-alg
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
19
The categories of this paper are: eess
12
The categories of this paper are: nucl-th
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
26
The categories of this paper are: bayes-an
21
The categories of this paper are: adap-org
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
23
The categories of this paper are: solv-int