Title :
A multichannel discriminator system for silicon strip detector readout
Author :
Turko, B.T. ; Luk, K.B. ; Gidal, G. ; Zizka, G. ; Kaplan, D. ; McGaugley, P. ; Lillberg, J. ; Mishra, S. ; Brown, C.C.
Author_Institution :
Lawrence Berkeley Lab., CA, USA
Abstract :
Up to 9216 fast discriminators are required for processing signals of the Fermilab silicon strip detector preamplifiers in experiment E789. Signals exceeding a preset discriminator threshold voltage are first stored in a clocked latch and then delayed by three 19-ns clock cycles with a shift resister. Discriminators are organized in 75 identical 128-channel subsystems. Each has four 32-channel PC boards housed in a signal routing motherboard. Eight 16-channel line driver boards transfer events from the motherboard through cables to the remote processing electronics. Three subsystems fit into the frame of a standard CAMAC crate. The authors describe the design considerations of the system and its performance, based on several months of testing the completed system.<>
Keywords :
CAMAC; discriminators; nuclear electronics; physics computing; preamplifiers; semiconductor counters; silicon; 128-channel subsystems; 16-channel line driver boards; 19 ns; 32-channel PC boards; Fermilab; Si detector; clock cycles; clocked latch; design considerations; experiment E789; fast discriminators; multichannel discriminator system; performance; preamplifiers; preset discriminator threshold voltage; remote processing electronics; shift resister; signal routing motherboard; standard CAMAC crate; strip detector readout; Clocks; Delay; Detectors; Latches; Preamplifiers; Routing; Signal processing; Silicon; Strips; Threshold voltage;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1991., Conference Record of the 1991 IEEE
Conference_Location :
Santa Fe, NM, USA
Print_ISBN :
0-7803-0513-2
DOI :
10.1109/NSSMIC.1991.259029
