Monolithic circuits for lead-glass calorimetry
- and others
Electronics developed for signal processing, digitization, and readout of a 10,000-element lead-glass electromagnetic calorimeter for CERN experiment WA98 are described. Chief among the components developed are two CMOS monolithic circuits. One, known as the ``Preamp`` chip, includes eight channels each of integrator, dual gain amplifier, fast shaping amplifier, constant fraction discriminator, and also two 2 {times} 2 current sums for trigger purposes, and maskable calibration pulsers for the time and energy channels. It also includes three 6-bit DACs for setting thresholds and calibration values. The other chip, known as the ``ATA`` (AMU/TAC/ADC) chip, includes 16 channels of AMU (analog memory unit), 8 channels of TAC, and 24 channels of Wilkinson-type ADC. A description of these chips` design and performance is given, together with a short description of supporting circuitry and of initial system performance as measured with 2- to 20-GeV electrons.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 10183611
- Report Number(s):
- CONF-9405199-2; ON: DE94019112; TRN: 94:020169
- Resource Relation:
- Conference: LeCroy conference on electronics for future colliders,Montvale, NJ (United States),10-11 May 1994; Other Information: PBD: [1994]
- Country of Publication:
- United States
- Language:
- English
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