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

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56 Author(s)

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

Published in:

IEEE Transactions on Nuclear Science  (Volume:37 ,  Issue: 3 )