Four-deep charge-time and pulse-width scaling discriminator for delay line MWPC's
A discriminator has been developed for digitizing both intercepted total charge and location of electromagnetic shower and particle trajectories in multi- wire proportional chambers read by delay lines. Determination of shower trajectory is aided by video signal integration followed by centroid-locating discrimination. Calibrated run-down of the signal integrating capacitor gives the charge information above a given threshold level. The discriminator is designed to handle up to four shower-induced video signals per event by incorporating steering circuits within the module. Each video signal is examined for time over an adjustable threshold. Video pulses with separation of less than 20 nsec are treated as a single pulse. Counter-logic circuits indicate the number of video signals digitized. These signal processing circuits provide a first level of data sifting which otherwise must be carried out with additional discriminator channels and added complexity in data recognition.
- Research Organization:
- California Univ., Berkeley (USA). Lawrence Berkeley Lab.
- DOE Contract Number:
- W-7405-ENG-48
- NSA Number:
- NSA-33-023395
- OSTI ID:
- 4062543
- Report Number(s):
- LBL-4624; HEPL-4624; CONF-751116-33
- Resource Relation:
- Conference: Nuclear science symposium, San Francisco, California, USA, 17 Nov 1975; Other Information: Orig. Receipt Date: 30-JUN-76
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440104* -Instrumentation-Radiation Instrumentation-High Energy Physics Instrumentation
*MULTIWIRE PROPORTIONAL CHAMBERS- READOUT SYSTEMS
*SHOWER COUNTERS- MULTIWIRE PROPORTIONAL CHAMBERS
DELAY CIRCUITS
DIGITIZERS
DISCRIMINATORS