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Feasibility study on a directional detection of WIMP using nano imaging tracker and X-ray microscope

Published online by Cambridge University Press:  30 May 2009

E. Pécontal ,
T. Buchert ,
Ph. Di Stefano ,
Y. Copin ,
Y. Tawara ,
I. Sakurai ,
T. Naka ,
M. Natsume  and
K. Niwa
Y. Tawara
Affiliation:
Division of Energy Science, EcoTopia Science Institute, Nagoya University, Japan
I. Sakurai
Affiliation:
Division of Energy Science, EcoTopia Science Institute, Nagoya University, Japan
T. Naka
Affiliation:
Department of Physics, Nagoya University, Japan
M. Natsume
Affiliation:
Department of Physics, Nagoya University, Japan
K. Niwa
Affiliation:
Department of Physics, Nagoya University, Japan
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Abstract

We propose new measurement system for direct detection of WIMPs with directional information using nano imaging tracker (NIT) and X-ray microscope. The NIT made of fine grains of emulsion has a good spatial resolution of several tens nanometer and the X-ray microscope can work as a readout instrument for sub-micron track structure instead of ordinary optical microscope. Wolter type-I fluorescence X-ray microscope utilizing Ag-L line can be applied to this system. Crucial issues are reduction of background event due to random fog and to develop fast selection method of WIMP event candidates.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 36: Dark Energy and Dark Matter: Observations, Experiments and Theories , 2009 , pp. 319 - 320
Copyright
© EAS, EDP Sciences, 2009

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References

Naka, T., et al., 2007, NIMPA, 581, 761 CrossRef
Natsume, M., et al., 2007, NIMPA, 575, 493 CrossRef
Nakamura, T., et al., 2006, NIMPA, 556, 80 CrossRef