High speed trigger system for total deposited energy measurement in a liquid argon calorimeter

Conference · Sun Oct 01 00:00:00 EDT 1978

OSTI ID:6482440

Grund, J E

A system to produce trigger signals measuring the total energy deposited in the liquid argon/lead shower counters of the SPERR Mark II Detector at the Stanford Linear Accelerator Center is described. The trigger signals are developed by summing, filtering, and discriminating the signals from several thousand preamplifiers connected to the liquid argon detector strips. The system requirement of trigger information 430 ns after a particle has entered the shower counter led to a special filter design in which a leading edge sampling technique was utilized. A filtered signal representing the total deposited energy is measured by a fast level discriminator that is strobed in synchronization with the e/sup +/e/sup -/ beam crossings of the SPEAR storage ring. This sampling of the filtered waveform produces a digital output that is delivered to the trigger logic.

• Research Organization: Stanford Linear Accelerator Center, CA (USA)
• DOE Contract Number: EY-76-C-03-0515
• OSTI ID: 6482440
• Report Number(s): SLAC-PUB-2216; CONF-781033-28; TRN: 79-007129
• Resource Relation: Conference: IEEE nuclear science symposium, Washington, DC, USA, 18 Oct 1978
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
43 PARTICLE ACCELERATORS
SHOWER COUNTERS
TRIGGER CIRCUITS
EFFICIENCY
LOGIC CIRCUITS
AMPLIFIERS
ARGON
DESIGN
FILTERS
LIQUIDS
PREAMPLIFIERS
SIGNALS
STANFORD LINEAR ACCELERATOR CENTER
ELECTRONIC CIRCUITS
ELECTRONIC EQUIPMENT
ELEMENTS
FLUIDS
MEASURING INSTRUMENTS
NATIONAL ORGANIZATIONS
NONMETALS
PULSE CIRCUITS
RADIATION DETECTORS
RARE GASES
US DOE
US ERDA
US ORGANIZATIONS
440104* - Radiation Instrumentation- High Energy Physics Instrumentation
430303 - Particle Accelerators- Experimental Facilities & Equipment