Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: The Quest for the Ideal Scintillator for Hybrid Phototubes   In this paper we present the results of extensive studies of scintillators
for hybrid phototubes with luminescent screens. The results of the developments
of such phototubes with a variety of scintillators are presented. New
scintillator materials for such kind of application are discussed. The
requirements for scintillators to use in such hybrid phototubes are formulated.
It is shown that very fast and highly efficient inorganic scintillators like
ZnO:Ga will be ideal scintillators for such kind of application.

20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
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The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
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The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
35
The categories of this paper are: mtrl-th
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
12
The categories of this paper are: nucl-th
5
The categories of this paper are: gr-qc