Monolithic electronics for the WA98 leadglass calorimeter
- Oak Ridge National Lab, TN (United States); and others
A set of electronics have been constructed, installed and operated for the 10,800 element leadglass photon calorimeter that is part of CERN experiment WA98 studying photon production in relativistic heavy-ion collisions of 160.A GeV{sup 208}Pb with targets of Ni, Nb and Pb. Two custom monolithic CMOS circuits were developed for this project. One chip includes 8 channels each of integrator, dual gain amplifier, fast amplifier, and CFD, as well as calibration circuits for amplitude and timing, threshold DACs, and current-mode trigger sum and discriminator. The second includes 16 channels of analog memory, 8 channels of TAC, a 24-channel Wilkinson 10 bit ADC, and buffers. The system is implemented as 72 144-channel circuit boards. Custom interface boards were also developed. A set of 26 model TMS320C40 digital signal processors is used to collect, zero-suppress and format the output data. Experience with data-taking using the {sup 208}Pb beam will be reported.
- OSTI ID:
- 374655
- Report Number(s):
- CONF-9304297-; ISSN 0003-0503; TRN: 96:004080-0017
- Journal Information:
- Bulletin of the American Physical Society, Vol. 40, Issue 2; Conference: 1993 joint meeting of the American Physical Society and the American Association of Physics Teachers, Washington, DC (United States), 12-15 Apr 1993; Other Information: PBD: Apr 1995
- Country of Publication:
- United States
- Language:
- English
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