6 research outputs found
Self-shielding effect of a single phase liquid xenon detector for direct dark matter search
Liquid xenon is a suitable material for a dark matter search. For future
large scale experiments, single phase detectors are attractive due to their
simple configuration and scalability. However, in order to reduce backgrounds,
they need to fully rely on liquid xenon's self-shielding property. A prototype
detector was developed at Kamioka Observatory to establish vertex and energy
reconstruction methods and to demonstrate the self-shielding power against
gamma rays from outside of the detector. Sufficient self-shielding power for
future experiments was obtained.Comment: 8 pages, 8 figure
Scintillation yield of liquid xenon at room temperature
The intensity of scintillation light emission from liquid xenon at room
temperature was measured. The scintillation light yield at 1 deg. was measured
to be 0.64 +/- 0.02 (stat.) +/- 0.06 (sys.) of that at -100 deg. Using the
reported light yield at -100 deg. (46 photons/keV), the measured light yield at
1 deg. corresponds to 29 photons/keV. This result shows that liquid xenon
scintillator gives high light yield even at room temperature.Comment: 16pages,12figure