WA80 BGO calorimetry electronics

Conference · Thu Oct 31 00:00:00 EST 1991

OSTI ID:6109927

Wintenberg, A L; Britton, Jr, C L; Ericson, M N; Maples, R A; Young, G R; Awes, T C

This paper describes instrumentation designed for BGO scintillator-based calorimetry of particles covering a very wide range of energies (from less than 50 MeV to 50 GeV). The instrumentation was designed to have a measurement accuracy of 0.1% over as much of the energy range as possible so the energy resolution of BGO would be the limiting factor. Two 1.5-cm{sup 2} photodiodes were used per 2.5 cm {times} 2.5 cm {times} 25 cm BGO crystal. Both a charge-sensitive preamplifier and a pulse processor were developed specifically for the needs of the WA80 experiment. The preamplifier was designed for high detector capacitance (100 to 700 pF), low integral and differential non-linearity and low power consumption (200 mW). The pulse processor is a time-invariant shaping amplifier with integral peak-detect-and-hold and automatic gain selection circuits. The amplifier use quasi-triangular shaping with 4 {mu}s peaking time, and the hold circuit is gated with a fast first level trigger. The system has more than 20 bits of effective resolution when used with an external 12-bit ADC. Results from beam tests at CERN are presented. 6 refs., 5 figs., 1 tab.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6109927
• Report Number(s): CONF-911106-13; ON: DE92002881
• Resource Relation: Conference: IEEE nuclear science symposium, Santa Fe, NM (United States), 5-9 Nov 1991
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BGO DETECTORS
PERFORMANCE TESTING
ACCURACY
DESIGN
ELECTRONIC CIRCUITS
ENERGY RESOLUTION
GAIN
PHOTODIODES
PREAMPLIFIERS
PULSES
SHOWER COUNTERS
SIGNAL CONDITIONING
SOLID SCINTILLATION DETECTORS
AMPLIFICATION
AMPLIFIERS
ELECTRONIC EQUIPMENT
EQUIPMENT
MEASURING INSTRUMENTS
RADIATION DETECTORS
RESOLUTION
SCINTILLATION COUNTERS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
TESTING
440104* - Radiation Instrumentation- High Energy Physics Instrumentation