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Volume 322 - 5th International Conference on Micro-Pattern Gas Detectors (MPGD2017) - Main session
Radiation studies on resistive bulk-micromegas chambers at the CERN Gamma Irradiation Facility
J. Samarati,* B. Alvarez Gonzalez, J. Bortfeldt, M. T. Camerlingo, E. Farina, P. Iengo, J. Samarati, O. Sidiropoulou, J. Wotschack
*corresponding author
Full text: Not available
Two resistive bulk-micromegas chambers were installed in May 2015 at the CERN Gamma Irradiation
Facility exposed to an intense gamma irradiation with the aim to study the detector
behavior under high irradiation and the long-term aging. The chambers have an active area of
10*10 cm2, strip pitch of 400 μm, an amplification gap of 128 μm and a drift gap of 5 mm. The
desired accumulated charge of more than 0.2 C/cm2 has been reached for one of the chambers,
equivalent to 10 years of HL-LHC operation. The efficiency, amplification, and resolution of the
chamber after this long-term irradiation period will be compared with the performance of a non
irradiated chamber.
In addition, the latest results of the measured particle rate as a function of the amplification voltage
will be presented. These results will be compared with those obtained in October 2015 and
presented in the last MPGD conference in 2015.
Open Access
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