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

Issue		EAS Publications Series Volume 36, 2009 Dark Energy and Dark Matter: Observations, Experiments and Theories


Page(s)		319 - 320
DOI		10.1051/eas/0936046
Published online		30 May 2009

Dark Energy and Dark Matter: Observations, Experiments and Theories
E. Pécontal, T. Buchert, Ph. Di Stefano and Y. Copin (eds)
EAS Publications Series, 36 (2009) 319-320
DOI: 10.1051/eas/0936046

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

Y. Tawara¹, I. Sakurai¹, T. Naka², M. Natsume² and K. Niwa²

¹ Division of Energy Science, EcoTopia Science Institute, Nagoya University, Japan
² Department of Physics, Nagoya University, Japan

Published online: 30 May 2009

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.

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