ABSTRACT
ICALEPCS 2001

Abstracts



FRBT003 (Talk)

Presenter: Ronald Chestnut (SLAC)
email: rpc@slac.stanford.edu
Review Status: Proceedings Ready - 01/30/02
FullText: pdf
Transparencies: pdf
Eprint: physics/0112065

The Bunch Injection Controller for the PEP-II Storage Rings

R. Chestnut, A. Fisher

The PEP-II storage rings at SLAC have 3492 'buckets' into which electrons and positrons can be injected into the high energy and low energy rings, respectively. Equipment to measure the currents of all the individual buckets was originally provided by the Lawrence Berkeley Laboratory and is implemented in VXI-based hardware. Data from this equipment as well as the high precision direct current measurement provide the hard data for the Bunch Injection Controller. A large number of parameters determined by injection design considerations as well as set by operators for different circumstances are also used by the software algorithms to determine the desired bucket order and charge quantity for each injection pulse. These requests are then passed on to the venerable master pattern generator, which provides beams for other applications as well. This highly visible and highly successful system is implemented using the EPICS toolkit, and fits well into the merged SLAC EPICS/SLC control system. The Bunch Injection Controller hardware is a VME-based EPICS IOC which makes extensive use of shared memory for communicating with the VXI measurement equipment and the SLAC master pattern generator.
ICAL Footer

  eCONF C011127    ePROCEEDINGS COMMITTEES PARTICIPANTS    PROGRAM SUMMARY ICALEPCS 2001  eCONF

 

ICALEPCS 2001

Last updated: September 13, 2002

Website Problem? Contact Technical Publications

SLAC