Title :
The read-out processors of the Aleph time projection chamber and their performance
Author :
Blucher, E. ; Fagerstrom, J. ; Haywood, S. ; Larsson, U. ; Lehraus, I. ; Loefstedt, B. ; Lohse, T. ; May, J. ; Minten, A. ; Richstein, J. ; Richter, W. ; Roth, A. ; Schlatter, D. ; Stefanini, G. ; Tejessy, W. ; Takashima, M. ; Wiedenmann, W. ; Witzeling,
Author_Institution :
CERN, Geneva, Switzerland
fDate :
6/1/1990 12:00:00 AM
Abstract :
The Aleph detector is installed on the LEP electron-positron storage ring. Its central tracking detector, a time projection chamber (TPC), has about 50000 channels of sampling electronics. The digitized signals are processed by 72 double-width Fastbus modules built around an MC 68020 processor. The time projection processor is described, and the solutions, both hardware and software, adopted to run and manage such a complex system in a Fastbus-VAX environment are discussed. Practical experience with the system is reported
Keywords :
nuclear electronics; physics computing; position sensitive particle detectors; proportional counters; Aleph time projection chamber; Fastbus modules; Fastbus-VAX; MC 68020 processor; read-out processors; software; Detectors; Extraterrestrial measurements; Fastbus; Hardware; Positrons; Pulse measurements; Signal processing; Signal sampling; Storage rings; Time measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
