The Read-out Processors of the Aleph Time Projection Chamber and Their Performance

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, W.; Vayaki, A.; Halley, A.; Barczewski, T.; L. A. T.,; Kasemann, M.; Roehn, S.; Schmelling, M.; Steeg, F.; Blum, W.; Jahn, A.; Richter, R.; Settles, R.; Thomas, J.; Amendolia, S. R.; Fidecaro, F.; Galeotti, S.; Lusiani, A.; Marrocchesi, Pier Simone; Morsani, F.; Passuello, D.; Salvadori, P.; Ciocci, Maria Agnese; Gobbo, B.; Milotti, E.; Rolandi, L.; Bellantoni, L.; Boudreau, J.; Cinabro, D.; Conway, J.; Conwery, M.; Cowen, D. F.; Jared, R. C.; Johnson, R.; Leclaire, B.; Pater, J.; Wear, J.; S. L., Wu; Xue, S.

doi:10.1109/23.57368

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

E., B., J., F., S., H., U., L., I., L., B., L., et al. (1990). The Read-out Processors of the Aleph Time Projection Chamber and Their Performance. In 1989 IEEE Nuclear Science Symposium - NSS'89 (pp.1210-1215). New York : IEEE [10.1109/23.57368].