Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Stability tests performed on the triple GEM detector built using
  commercially manufactured GEM foils in India   The Gas Electron Multiplier (GEM) technology is based on thin polymer foils
cladded with copper on both the sides with a regular matrix of holes. Due to
the limited manufacturing capacity of CERN, these GEM foils are now
commercially manufactured also by Micropack Pvt. Ltd., a company based in
India. In order to gain an insight on the behaviour of detectors built using
the foils from Micropack, it is important to study various long and short term
effects on these foils due to the applied voltage as well as the flux of the
incident particles. In this paper, we report the effect on gain stability of
triple GEM detectors due to the polarising field induced by X-rays on the
polyimide foils. Also, reducing the size of the amplifying structure to the
microscopic scale results in a quick mitigation of the space charge effects
which in turn helps in attaining a stable gain at very high incident flux. We
report on the measurements of variations in the effective gain at very high
particle flux of the order of $ \rm MHz/mm^2$

17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
22
The categories of this paper are: chao-dyn
7
The categories of this paper are: hep-th
0
The categories of this paper are: hep-ph
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
18
The categories of this paper are: econ
16
The categories of this paper are: stat
19
The categories of this paper are: eess
23
The categories of this paper are: solv-int