The read-out processors of the Aleph time projection chamber and their performance

Conference · Fri Jun 01 00:00:00 EDT 1990 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA)

OSTI ID:6587095

Blucher, E; Fagerstrom, J; Haywoodk, 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, W ^[1]; Vayaki, A ^[2]; Halley, A ^[3] ; Barczewski, T; Bauerdick, L A.T.; Kasemann, M; Roehn, S; Schmelling, M; Steeg, F ^[4]; Blum, W; Jahn, A; Richter, R; Settles, R; Thomas, J ^[5]; Amendolia, S R; Fidecaro, F; Galeotti, S; Lusiani, A; Marrocchesi, P S; Morsani, F; Passuello, D; Salvadori, P ^[6]; Ciocci, M A; Gobbo, B; Millotti, E; Rolandi, L ^[7]; Bellantoni, L; Boudreau, J; Cinabro, D

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1. CERN, Geneva (CH)
2. Nuclear Research Center Demokritos, Athens (GR)
3. Glasgow Univ. (UK)
4. Institut fur Physik, J. Gutenberg Univ. Mainz (DE)
5. Max-Planck-Institut fuer Physik und Astrophysik, Muenchen (Germany, F.R.)
6. Dept de Fisica, INFN Sezione di Pisa, Scuola Normale Superiore, Pisa (IT)
7. Institute di Fisica e Sezione INFN, Trieste (IT)

The Aleph detector is installed on the LEP electron-positron storage ring. Its central tracking detector, a time projection chamber, has about 50,000 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.

• OSTI ID: 6587095
• Report Number(s): CONF-900143-; CODEN: IETNA; TRN: 90-031747
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (USA), Vol. 37:3; Conference: Institute for Electronic and Electrical Engineers (IEEE) nuclear science symposium, San Francisco, CA (USA), 15-19 Jan 1990; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
43 PARTICLE ACCELERATORS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
LEP STORAGE RINGS
PROJECTION SPARK CHAMBERS
COMPUTER CODES
CHARGED PARTICLE DETECTION
DEC COMPUTERS
ELECTRON-POSITRON INTERACTIONS
FASTBUS SYSTEM
COMPUTERS
DETECTION
GAS TRACK DETECTORS
INTERACTIONS
LEPTON-LEPTON INTERACTIONS
MEASURING INSTRUMENTS
PARTICLE INTERACTIONS
RADIATION DETECTION
RADIATION DETECTORS
SPARK CHAMBERS
STORAGE RINGS
440104* - Radiation Instrumentation- High Energy Physics Instrumentation
430303 - Particle Accelerators- Experimental Facilities & Equipment
430400 - Particle Accelerators- Storage Rings
990200 - Mathematics & Computers