Electronics for the BaBar central drift chamber

Journal Article · Wed Dec 01 04:00:00 EST 1999 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers)

DOI:https://doi.org/10.1109/23.819276· OSTI ID:20015433

Albert, J; Bajic, A; Bard, R ^[1]

---

1. and others

The central drift chamber for the BaBar detector at the SLAC B-factory is based on a hexagonal cell design with 7104 cells arranged in 40 layers and drift gas Helium:isobutane (80%:20%). Performance optimization and integration requirements led to an electronics design that mounts the amplifier-discriminator and digitizing circuitry directly on the endplate. High channel density is achieved using a 4-channel custom amplifier-discriminator IC and an 8-channel custom CMOS TDC/FADC IC on a single circuit board. Data read from the front ends are multiplexed on 4 fiber optic links, and prompt trigger data are sent out continuously on 24 links. Analysis of cosmic ray data demonstrates that the electronics design meets the performance goals for the BaBar drift chamber. The final electronics were installed on the drift chamber in July, 1998. Installation of BaBar on beamline is scheduled for March, 1999.

• Research Organization: Budker Inst. of Nuclear Physics, Novosibirsk (RU)
• OSTI ID: 20015433
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers), Journal Name: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers) Journal Issue: 6Pt2 Vol. 46; ISSN 0018-9499; ISSN IETNAE
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
DESIGN
DRIFT CHAMBERS
ELECTRONIC CIRCUITS
PEP STORAGE RINGS
PERFORMANCE
READOUT SYSTEMS