Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Commissioning Run of the CRESST-II Dark Matter Search   The CRESST cryogenic direct dark matter search at Gran Sasso, searching for
WIMPs via nuclear recoil, has been upgraded to CRESST-II by several changes and
improvements.We present the results of a commissioning run carried out in 2007.
  The basic element of CRESST-II is a detector module consisting of a large (~
300 g) CaWO_4 crystal and a very sensitive smaller (~ 2 g) light detector to
detect the scintillation light from the CaWO_4.Information from light-quenching
factor studies allows the definition of a region of the energy-light yield
plane which corresponds to tungsten recoils. A neutron test is reported which
supports the principle of using the light yield to identify the recoiling
nucleus.
  Data obtained with two detector modules for a total exposure of 48 kg-days
are presented. Judging by the rate of events in the "all nuclear recoils"
acceptance region the apparatus shows a factor ~ten improvement with respect to
previous results, which we attribute principally to the presence of the neutron
shield.
  In the "tungsten recoils" acceptance region three events are found,
corresponding to a rate of 0.063 per kg-day. Standard assumptions on the dark
matter flux, coherent or spin independent interactions,then yield a limit for
WIMP-nucleon scattering of 4.8 \times 10^{-7}pb, at M{WIMP} ~50 GeV.

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The categories of this paper are: stat
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The categories of this paper are: supr-con
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The categories of this paper are: bayes-an
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The categories of this paper are: nlin
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The categories of this paper are: q-bio
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The categories of this paper are: econ
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The categories of this paper are: math
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The categories of this paper are: mtrl-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: gr-qc
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The categories of this paper are: chao-dyn