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Triple GEM Operation

This document presents the Triple-GEM connection configuration and current-voltage characteristics as discussed during the 13th RD51 Collaboration Meeting held on February 14, 2014, at the Saha Institute of Nuclear Physics. It includes detailed specifications of the voltage divider setup for the GEM detectors, pulse height spectra at different high voltages, and gain variations, providing insights into the performance of the detector systems. The findings contribute to understanding the GEM operation under various conditions, which is crucial for future developments in nuclear and particle physics research.

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Triple GEM Operation

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  1. Triple GEM Operation RD51 Group Saha Institute of Nuclear Physics 14 February, 2014

  2. Triple-GEM Connection Cathode 0.1M 0.1M 0.1M 10M 2.2nF 2.2nF Drift (3mm) 1.0M HV Filter 10M GEM1 Transfer 1 (1mm) 0.55M 1.0M GEM2 Transfer 2 (2mm) 0.5M 10M 1.0M Induction (1mm) GEM3 10M 0.4375M Anode 1.0M 4 Readout Sectors Divider 13th RD51 Collaboration Meeting

  3. Voltage Current Tabulation

  4. Pulse Height Spectra for 4 Readout Sectors HV = 4450 V Without RC filter 13th RD51 Collaboration Meeting

  5. Pulse Height Spectra For Different HV 4450 V 4550 V 4650 V 4750 V With RC filter 13th RD51 Collaboration Meeting

  6. Gain Variation with High Voltage (before RC filter) • Assumed that the voltage divider configurations are same in both the cases ! • No idea whether the HV in CMSGEM is before or after the RC filter ! 13th RD51 Collaboration Meeting

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