Electronics for the Si detectors in APEX
- Argonne National Lab., IL (United States)
- Argonne National Lab., IL (United States); and others
APEX (ATLAS Positron EXperiment), a collaborative effort of ANL, FSU, MSU/NSCL, Princeton, Queen`s, Rochester, Washington and Yale, is an experiment to study positron and electron production in very heavy ion collisions. The electrons and positrons are detected with two detector arrays, each consisting of 216 1 mm thick Si PIN diodes, and their energy and time-of-flight are measured. The number of detectors and limited space made it necessary to develop a system that could efficiently process and transfer signals from the detectors to the charge sensing ADC`s and data readout electronics as well as monitor the condition of the detectors. The discussion will cover the electronics designed for the Si detectors, including the charge amplifier, ``Mother board`` for the charge amplifiers, 8 channel Shaper, 16 channel Constant Fraction Discriminator (CFD), 16 channel Peak-to-FERA (PTF) and the integration of the CFD and PTF with Charge sensing ADC`s. Function and performance of the individual modules as well as the system as a whole will be discussed.
- Research Organization:
- Argonne National Lab., IL (United States); Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38; AC03-76SF00098
- OSTI ID:
- 10167191
- Report Number(s):
- ANL/PHY/CP-83448; CONF-9405199-1; ON: DE94015078; TRN: 94:015438
- 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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