Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Further studies of GEM performance in dense noble gases   We further study the performance of single, double and triple Gas Electron
Multiplier (GEM) detectors in pure noble gases at high pressures, in the range
of 1-10 atm. We confirm that light noble gases, in particular He and its
mixtures with Kr, have the highest gain, reaching 10^6, and an unusual gain
dependence on pressure. Effects of the number of GEMs, GEM hole diameter and
pitch are investigated in detail. In He, avalanche-induced secondary
scintillations are observed at high gains, using the metal photocathode. These
results are relevant in the field of avalanche mechanism in noble gases and
X-ray, neutron and cryogenic particle detectors.

10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
0
The categories of this paper are: hep-ph
16
The categories of this paper are: stat
7
The categories of this paper are: hep-th
32
The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
22
The categories of this paper are: chao-dyn
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci