2 research outputs found
Design and operation of a cryogenic charge-integrating preamplifier for the MuSun experiment
The central detector in the MuSun experiment is a pad-plane time projection
ionization chamber that operates without gas amplification in deuterium at 31
K; it is used to measure the rate of the muon capture process . A new charge-sensitive preamplifier, operated at
140 K, has been developed for this detector. It achieved a resolution of 4.5
keV(D) or 120 RMS with zero detector capacitance at 1.1 s
integration time in laboratory tests. In the experimental environment, the
electronic resolution is 10 keV(D) or 250 RMS at a 0.5 s
integration time. The excellent energy resolution of this amplifier has enabled
discrimination between signals from muon-catalyzed fusion and muon capture on
chemical impurities, which will precisely determine systematic corrections due
to these processes. It is also expected to improve the muon tracking and
determination of the stopping location.Comment: 18 pages + title page, 13 figures, to be submitted to JINST; minor
corrections, added one reference, updated author lis