TY - JOUR
T1 - Aging measurements of a TMAE based photon detector for the HERA-B RICH
AU - Pyrlik, J.
AU - Atiya, M.
AU - Broemmelsiek, D.
AU - Hamacher, Th
AU - Ispiryan, M.
AU - Korpar, S.
AU - Križan, P.
AU - Lau, K.
AU - Maas, P.
AU - McGill, J.
AU - Reeves, K.
AU - Rose, P.
AU - Rosen, J.
AU - Schwarz, A. S.
AU - Schwitters, R.
AU - Starič, M.
N1 - Funding Information:
We would like to thank Minghan Ye from the Institute of High-Energy Physics, Beijing for the field and gain calculations of our chamber and the DESY accelerator division for providing the test beam. This work was supported in part by the US Department of Energy.
PY - 1998/9/11
Y1 - 1998/9/11
N2 - We report on aging measurements of a photon detector candidate, based on proportional wire chambers operating in TMAE, for the HERA-B RICH. The detector consisted of 64 cells, each 100 mm long and 8 X 8 mm2 in area, constructed with brass cathode and 45 μm gold plated tungsten anode wire and was operated at room temperature with 50% TMAE saturated methane. To age the chamber it was exposed for several weeks to UV light from a deuterium lamp at 3 MHz/cm2 counting rate, the expected maximum rate in the HERA-B RICH. The detection efficiency of the chamber for Cherenkov photons, generated in 5 m of argon by a 3 GeV electron testbeam at DESY, was recorded at regular intervals during the aging process. The pulse-height distribution of the chamber was continuously monitored. We found significant chamber gain loss after an exposure equivalent to about one month of running at HERA-B. Based on our results HERA-B decided to employ a multi-anode PMT system as photon detector in the RICH.
AB - We report on aging measurements of a photon detector candidate, based on proportional wire chambers operating in TMAE, for the HERA-B RICH. The detector consisted of 64 cells, each 100 mm long and 8 X 8 mm2 in area, constructed with brass cathode and 45 μm gold plated tungsten anode wire and was operated at room temperature with 50% TMAE saturated methane. To age the chamber it was exposed for several weeks to UV light from a deuterium lamp at 3 MHz/cm2 counting rate, the expected maximum rate in the HERA-B RICH. The detection efficiency of the chamber for Cherenkov photons, generated in 5 m of argon by a 3 GeV electron testbeam at DESY, was recorded at regular intervals during the aging process. The pulse-height distribution of the chamber was continuously monitored. We found significant chamber gain loss after an exposure equivalent to about one month of running at HERA-B. Based on our results HERA-B decided to employ a multi-anode PMT system as photon detector in the RICH.
UR - https://www.scopus.com/pages/publications/0032166007
U2 - 10.1016/S0168-9002(98)00645-7
DO - 10.1016/S0168-9002(98)00645-7
M3 - Article
AN - SCOPUS:0032166007
SN - 0168-9002
VL - 414
SP - 170
EP - 181
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
IS - 2-3
ER -