Title :
The sixteen channel CAMAC constant fraction discriminator for APEX
Author :
Maier, M.R. ; Robertson, Martin ; Wolfs, F.L.H. ; Perera, P.A.A.
Author_Institution :
Lawrence Berkeley Lab., CA, USA
Abstract :
The authors report on the construction and the performance of a sixteen-channel constant fraction discriminator (CFD) for the Atlas Positron Experiment (APEX). An integrated circuit which contains all the electronic building blocks needed to construct a CFD has been used. Sixteen channels of CFD have been placed into a CAMAC module. An important feature is the time-to-charge converter (TQC) included for every CFD channel. Its calibration constant is controlled via CAMAC. The TQC allows the use of charge-sensitive analog-to-digital converters for timing measurements. Results for CFD walk, resolution, and crosstalk as well as for TQC linearity are presented.<>
Keywords :
CAMAC; analogue-digital conversion; calibration; discriminators; nuclear electronics; physics computing; APEX; Atlas Positron Experiment; CFD; TQC; calibration constant; charge-sensitive analog-to-digital converters; crosstalk; electronic building blocks; integrated circuit; linearity; performance; resolution; sixteen channel CAMAC constant fraction discriminator; time-to-charge converter; timing measurements; Bars; CAMAC; Computational fluid dynamics; Detectors; Energy resolution; Gamma ray detection; Impedance; Laboratories; Positrons; Silicon;
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.1991.259026
