Speaker
Description
The Gas Electron Multiplier (GEM) detector is proposed to be used as a readout for ALICE TPC upgrade in LHC experiment, at CERN [1]. The existing Multiple Wire Proportial Chamber (MWPC) will be replaced by GEM based readout which provides intrinsic ion blocking capability with out any gating grid system [2]. So a generous study involving GEM characteristics and performance is needed for its further operations. Here we did the characteristics study for a 10×10 qudruple gem detector prototype, irradiated with Am241gamma source. First the callibration is done for Am241 with the Fe55 source. The result we got from the callibration is used in the further study of GEM. Since GEM detector operates in a gas flow mode, the gas property could play a major role upon detector performance. In this study, we investigate the performance of GEM detector in Ar/CO2:70/30 medium with a variation of flow rate from 25 to 150 SCCM measured from a mass flow monitor built in house [3].
References
[1] F. Sauli, et al., Nuclear Instruments and Methods 805 (2016) 224
[2] G. Charpak, et al., Nuclear Instruments and Methods 62 (1968) 262
[3] S. Sahu, et al., Proceedings of the DAE-BRNS Symp. on Nucl. Phys. 61 (2016), 1002
| Presentation type | Oral |
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