Speakers
Description
Continuation of study of the signal linearity and response, calibration, saturation, comparison of different types of BLM detectors. The LHC type of Ionization Chambers, IC08 and IC17, were tested in 2017-2018 and will need to continue to be tested in 2020-2022 to check the aging of IC and comparison with Run 2 data. This is highly important for evaluating the requirement of beyond 20 years of operation in the LHC and HL-LHC environment as well as evaluating the ceramics used in the production of the IC17 batch. The LIC (Little ionization chamber) type with IC ceramics was tested for the first time in 2017-2018. Based on the very promising results of this test we are following with a second pre-series production of these type of detectors. Those make use of different ceramics than the LICs currently installed at LHC. To support the investigations of the 16L2 limitation and anticipate other possible similar future problems, we have produced a new type proportional chambers, which would be preferable to be tested first at HRM together with the standard detectors. This new type of detectors has the same outside geometry but the sensitivity is 10-100 times higher in comparison to the existing detectors.