Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Crystals for high-energy calorimetry in extreme environments   Crystals are used as a homogeneous calorimetric medium in many high-energy
physics experiments. For some experiments, performance has to be ensured in
very difficult operating conditions, like a high radiation environment, very
large particle fluxes, high collision rates, placing constraints on response
and readout time. An overview is presented of recent achievements in the field,
with particular attention given to the performance of Lead Tungstate (PWO)
crystals exposed to high particle fluxes.

25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
11
The categories of this paper are: hep-lat
23
The categories of this paper are: solv-int
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys
1
The categories of this paper are: cs
0
The categories of this paper are: hep-ph
28
The categories of this paper are: alg-geom
24
The categories of this paper are: dg-ga