Title :
Readout electronics for the Venus TRD at TRISTAN
Author :
Fukushima, Y. ; Sakuda, M. ; Terunuma, N. ; Watase, Y. ; Nakano, I. ; Haba, J. ; Kanda, N. ; Krueger, A.
Author_Institution :
Tsukuba Univ., Ibaraki, Japan
Abstract :
A large cylindrical transition radiation detector has been constructed as a part of the Venus detector for the TRISTAN e +e- collider. It was designed to supplement the e/π separation capability of the lead glass calorimeter. The detector has a total of 2688 channels of readout electronics. The electronics uses the method of charge amplifier-trapezoidal shaping. Each TKO board contains 32 channels of shaper-gated integrators and a 12 bit analog-to-digital converter. The circuit has typically an 11 b linearity. The gas gain of each X-ray chamber is kept constant within ±1% by monitoring 5.9 keV X-ray signals of an 55Fe source. The system has been operating for about a year and works well. The TRD gives a pion rejection factor of 13±3 for 90% electron efficiency and 30±3 for 80% electron efficiency
Keywords :
analogue-digital conversion; meson detection and measurement; nuclear electronics; position sensitive particle detectors; proportional counters; pulse shaping circuits; 5.9 keV; TKO board; Venus detector; X-ray; analog-to-digital converter; charge amplifier-trapezoidal shaping; electron efficiency; pion rejection factor; readout electronics; shaper-gated integrators; transition radiation detector; Analog-digital conversion; Circuits; Electrons; Glass; Iron; Linearity; Monitoring; Radiation detectors; Readout electronics; Venus;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301282
