Signal shaping and tail cancellation for gas proportional detectors at high counting rates

Conference · Fri Oct 31 23:00:00 EST 1980

OSTI ID:7034361

Boie, R A; Hrisoho, A T; Rehak, P

A low noise, wide bandwidth preamplifier and signal processing filter were developed for high counting rate proportional counters. The filter consists of an eight pole Gaussian integrator with symmetrical weighting function and continuously variable shaping time, tau/sub s/, of 8 ns to 50 ns (FWHM) preceded by a second order pole/zero circuit which cancels the long (l/t) tails of the chamber signals. The preamplifier is an optimized common base input design with 2 nsec rise time and an equivalent noise input charge of <2000 rms electrons, when connected to a chamber with 10 pF capacitance and at a filtering time, tau/sub s/, of 10 ns.

• Research Organization: Brookhaven National Lab., Upton, NY (USA)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 7034361
• Report Number(s): BNL-28691; CONF-801103-36
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors &amp; Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
AMPLIFIERS
CONFIGURATION
DESIGN
ELECTRIC FILTERS
ELECTRONIC EQUIPMENT
EQUIPMENT
FILTERS
MEASURING INSTRUMENTS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
SHAPE
SIGNALS