Management and control of the read out processors (TPPs) of the Aleph time projection chamber

The readout of the Aleph time projection chamber (TPC) relies on a set of 72 time projection processors (TPPs), which are based on a Motorola 68020 microprocessor running a real-time operating system. The advanced processing capabilities of the TPPs allow them to perform in parallel a number of task...

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Bibliographic Details
Published in:IEEE (Institute of Electrical and Electronics Engineers) Transactions on Nuclear Science; (USA) 1989-10, Vol.36 (5), p.1459-1463
Main Authors: Amendolia, S.R., Barczewski, T., Bauerdick, L.A.T., Blucher, E., Blum, W., Boudreau, J., Cinabro, D., Ciocci, M.A., Conway, J., Cowen, D.F., Fidecaro, F., Galeotti, S., Gobbo, B., Jahn, A., Johnson, R., Kasemann, M., Halley, A., Haywood, S., Larsson, U., LeClaire, B., Lehraus, I., Lofstedt, B., Lohse, T., Lusiani, A., Marrochesi, P.S., May, J., Milotti, E., Minten, A., Morsani, F., Passuello, D., Richstein, J., Richter, R., Roehn, S., Rolandi, L., Schlatter, D., Schmelling, M., Settles, R., Stefanini, G., Steeg, F., Takashima, M., Tejessy, W., Thomas, J., Vayaki, A., Wear, J., Witzeling, W., Wu, S.L., Xue, S.
Format: Article
Language:English
Subjects:
430400 - Particle Accelerators- Storage Rings
990220 - Computers, Computerized Models, & Computer Programs- (1987-1989)
COMPUTERS
Data acquisition
ELECTRONIC CIRCUITS
Fastbus
FASTBUS SYSTEM
GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
LEP STORAGE RINGS
MICROELECTRONIC CIRCUITS
MICROPROCESSORS
Operating systems
PARTICLE ACCELERATORS
Performance gain
Project management
REAL TIME SYSTEMS
SCADA systems
Signal processing
STORAGE RINGS
Wire
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Summary:The readout of the Aleph time projection chamber (TPC) relies on a set of 72 time projection processors (TPPs), which are based on a Motorola 68020 microprocessor running a real-time operating system. The advanced processing capabilities of the TPPs allow them to perform in parallel a number of tasks, both during and outside of data acquisition, which are outlined. The management and control of such a large number of intelligent devices is presented. The discussion covers the hardware configuration of the TPPs; the software running the TPPs; their management, status, and control; exception handling and message logging; and the TPP monitoring tasks.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.41083