Digital electronics for the inclusion of shower max and preshower wire data in the CDF second-level trigger

Conference · Thu Jul 01 00:00:00 EDT 1993

OSTI ID:10175286

Dawson, J W; Byrum, K L; Haberichter, W N; Nodulman, L J; Wicklund, A B ^[1]; Turner, K J ^[2]; Gerdes, D W ^[3]

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1. Argonne National Lab., IL (US)
2. Fermi National Accelerator Lab., Batavia, IL (US)
3. Univ. of Michigan, Ann Arbor, MI (US)

As part of the upgrade program at CDF, electronics has been built to bring the shower max (CES) and preshower (CPR) data into the trigger at level 2. After each crossing, 384 bits from shower max and 192 from the preshower wires are latched. Data from tracks are bussed to this module to provide the wire address and momentum which are then successively compared to the wire data in large look-up tables. Approximately 50 nanoseconds is required to determine a match, write the results in FIFO, and make the results available to track memory. Monte Carlo analysis has indicated that an increase in efficiency of a factor of three in triggering on b decays will be achieved with this hardware.

• Research Organization: Argonne National Lab., IL (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 10175286
• Report Number(s): ANL-HEP-CP-93-48; CONF-930537-88; ON: DE93017461; TRN: 93:017960
• Resource Relation: Conference: 5. annual international industrial symposium on the Super Collider and exhibition,San Francisco, CA (United States),6-8 May 1993; Other Information: PBD: [1993]
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
FERMILAB COLLIDER DETECTOR
PARTICLE DISCRIMINATION
TRIGGER CIRCUITS
DESIGN
DISCRIMINATORS
430303
EXPERIMENTAL FACILITIES AND EQUIPMENT