A large-area GEM detector using a novel self-stretching technique
Abstract
A Gas Electron Multiplier (GEM) detector with an effective area of 300 mm×300 mm has been constructed using a novel self-stretching technique, which allows a highly flexible and efficient GEM detector assembly free of glue or spacers. This makes the re-opening and repair of the GEM detectors possible and significantly reduces the scrap rate in the mass production of large-area GEM detectors. With the technique, the assembly time can be limited to a few hours, a factor of ten improvement compared to that using gluing techniques. The details of design and assembly procedure of the 300 mm×300 mm GEM detector are described in this paper. This detector was tested with 8 keV X-rays for the effective gain, energy resolution and performance uniformity. The results show that the typical energy resolution is 20% at an effective gain of about 104, with fairly good uniformity.
Supported by National Natural Science Foundation of China (11205151, 11375180)- Publication:
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Chinese Physics C
- Pub Date:
- April 2015
- DOI:
- 10.1088/1674-1137/39/4/046001
- arXiv:
- arXiv:1405.1872
- Bibcode:
- 2015ChPhC..39d6001Y
- Keywords:
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- Physics - Instrumentation and Detectors;
- High Energy Physics - Experiment
- E-Print:
- doi:10.1088/1674-1137/39/4/046001