Title :
Detection of Alpha Particles and Low Energy Gamma Rays by Thermo-Bonded Micromegas in Xenon Gas
Author :
Yuehuan Wei ; Liang Guan ; Zhiyong Zhang ; Qing Lin ; Xiaolian Wang ; Kaixuan Ni ; Tianchi Zhao
Author_Institution :
Dept. of Phys., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
Micromegas is a type of micro-pattern gaseous detector currently under R&D for applications in rare event search experiments. Here we report the performance of a Micromegas structure constructed with a micromesh thermo-bonded to a readout plane, motivated by its potential application in two-phase xenon detectors for dark matter and neutrinoless double beta decay experiments. The study is carried out in pure xenon at room temperature. Measurements with alpha particles from the Americium-241 source showed that gas gains larger than 200 can be obtained at xenon pressure up to 3 atm. Gamma rays down to 8 keV were observed with such a device.
Keywords :
alpha-particle detection; cosmic ray apparatus; dark matter; double beta decay; gamma-ray apparatus; Americium-241 source; alpha particles detection; dark matter; low energy gamma rays; micropattern gaseous detector; neutrinoless double beta decay; rare event search experiments; thermobonded Micromegas; two phase xenon detector; Alpha particles; Anodes; Cathodes; Detectors; Energy resolution; Temperature measurement; Xenon; Dark matter detection; Micromegas; micropattern gaseous detector; xenon;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.2013.2265018
