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

Volume

60

Issue

4

fYear

2013

fDate

Aug. 2013

Firstpage

3008

Lastpage

3013

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;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2013.2265018

Filename

6544301