Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Application of Time Projection Chambers with GEMs and Pixels to WIMP
  Searches and Fast Neutron Detection   We present work on the detection of neutral particles via nuclear recoils in
gas-filled Time Projection Chambers (TPCs). We employ Gas Electron Multipliers
(GEMs) to amplify the signal and silicon pixel electronics to detect the
avalanche charge. These technologies allow ionization in the target gas to be
detected with low noise, improved position and time resolution, and high
efficiency. We review experimental results obtained in previous years, and
report on ongoing simulation studies and construction of the first prototype at
the University of Hawaii. We also present prospects of using such detectors to
perform direction-sensitive searches for WIMP dark matter and fast neutron from
fissionable material.

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The categories of this paper are: nucl-th
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The categories of this paper are: hep-lat
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The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
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The categories of this paper are: adap-org
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The categories of this paper are: nucl-ex
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The categories of this paper are: supr-con
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The categories of this paper are: econ
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The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: solv-int
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The categories of this paper are: stat
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The categories of this paper are: chem-ph