Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Ultrafast Inorganic Crystals with Mass Production Capability for Future
  High-Rate Experiments   Future HEP experiments present stringent challenges to inorganic
scintillators in both fast timing response and radiation tolerance. This paper
reports recent progress in developing ultrafast inorganic scintillators with
sub-ns decay time for future precision timing detectors and high-rate
experiments. Performance of fast and ultrafast crystals with mass production
capability are compared to CsI crystals which are used for the Mu2e
calorimeter. Examples are LYSO:Ce, BaF2 and BaF2:Y, which are considered for
Mu2e-II. Crystal radiation hardness against gamma-rays and hadrons is reported.
Current status and development effort for the BaF2:Y crystals are discussed.

20
The categories of this paper are: acc-phys
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
0
The categories of this paper are: hep-ph
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
1
The categories of this paper are: cs
4
The categories of this paper are: cond-mat
22
The categories of this paper are: chao-dyn
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The categories of this paper are: eess
24
The categories of this paper are: dg-ga
30
The categories of this paper are: q-alg
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph