Monolithic circuits for the WA98 lead glass calorimeter

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:239279

Wintenberg, A L; Awes, T C; Britton, Jr, C L ^[1]

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1. Oak Ridge National Lab., TN (United States); and others

Two monolithic circuits developed for readout of a 10,000 element lead glass calorimeter are described. The first contains 8 channels with each channel comprising a charge integrating amplifier, two output amplifiers with gains of one and eight, a timing filter amplifier and a constant fraction discriminator. This IC also contains a maskable, triggerable calibration pulser and circuits needed to form 2 by 2 and 4 by 4 energy sums used to provide trigger signals. The second IC is a companion to the first and contains 16 analog memory channels with 16 cells each, eight time-to-amplitude converters and a 24-channel analog-to-digital converter. The use of the analog memories following the integration function eliminates the need for delay cables preceding it. Characterizations of prototypes are reported, and features included to ease integration if the ICs into a readout system are described.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 239279
• Report Number(s): CONF-941061--24; ON: DE96010664
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ANALOG-TO-DIGITAL CONVERTERS
DESIGN
INTEGRATED CIRCUITS
PHOTOMULTIPLIERS
PREAMPLIFIERS
SHOWER COUNTERS
TESTING