Speakers
Description
The advancement of accelerator technologies helps the High Energy Physics (HEP) community to reach higher collision rates to measure rare physical observables with unprecedented precessions. This imposes a great challenge to the rate handling capabilities of the detectors. In the HEP experiments, gas-filled detectors are commonly used for tracking, triggering, and timing measurements. Gas Electron Multiplier (GEM) is one of the most used gaseous detectors in the HEP experiments. GEMs are widely used as tracking devices due to their high-rate handling capability and good position resolution. Long term stability in performance is one of the main criteria for choosing detectors for the HEP experiments. Investigating the performance of the chambers with prolonged irradiation is one of the useful methods to understand the stability of the chambers. Thus, an initiative is taken to study the performance of the GEM chamber prototypes in the laboratory using external irradiation for different gas mixtures. In this work a Fe-55 X-ray source is used to irradiate the GEM chambers. The same source is also used to monitor the spectrum. The effect of temperature, pressure, relative humidity on the gain and energy resolution, the charging up effects are studied. The details of the experimental setup, methodology and results will be presented.
