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

Volume

37

Issue

3

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

1210

Lastpage

1215

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;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.57368

Filename

57368