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Archives, History & Records Office

Hours: By appointment Monday-Friday during regular work hours.


  • Archives E-mail: slacarc[@]
  • RM E-mail: recordsmgt[@]
  • Phone: (650)926-3091
  • Post:
    SLAC Archives and History Office
    2575 Sand Hill Road MS82
    Menlo Park, CA 94025.

Office Location: Bldg.50, Rm.122

About SLACspeak

Science writer Calla Cofield discovers the true meaning of "SLACronym" with the help of SLAC archivist Jean Deken in this video installment of the Word of the Week.
(SLAC Today, 10/16/2009)

SLACspeak is a continuously updated online database of general SLAC-related terms abbreviations, acronyms, initialism and lingo. It is also a publication that has seen three editions (1991, 1994, and 2000).

The SLACspeak database is built upon information compiled from sources used for the three paper editions, and supplements and updates these original terms and definitions with information from the more-recently published literature of high-energy physics, synchrotron radiation research, and environmental, health, and safety science. It is updated and maintained by the SLAC Archives, History and Records Office based on our reading and research, and on input from the SLAC community.

The intention of this database is to define word meanings; it should not be used as a style guide.

The first two editions of SLACspeak were derived from several sources:

  • Argouarch, Phillipe. (Accelerator Department, SLAC) Accelerator Operations Glossary. SLAC-related vocabulary.
  • Kindschy, Jon W. (compiler) (University of California) SLAC Environmental Compliance Assessment; and Principles of Hazardous Materials Management: Glossary of Terms & Acronyms. Environmental, health, and safety terminology.
  • U. S. Department of Energy, Office of Civilian Radioactive Waste Managment. Draft Mission Plan Amendment. Environmental, health and safety terminology.
  • Jacobsen, O. and Lynch, D. (compilers) The INTEROP Pocket Glossary, RFC 1208. Computer-related terms and acronyms.
  • Particle Data Group. “Review of Particle Properties,” Physical Review D, V.45,n.11, June 1992. Accelerator and detector acronyms.
  • SLAC Staff members Joan Winters, SLAC Computing Services; Bob Gex and Louise Addis, SLAC Library; and Robin Chandler, SLAC Archives and History Office.

Further Definitions

Further definitions of SLAC-related terms can be found in the SLAC Virtual Visitor's Center Glossary of common SLAC and High-Energy Physics terms, the BIS glossary (words used in our Business Information System and its related web sites), The Business Services DivisionData Warehouse / MicroStrategy Glossary or the Particle Detector BriefBook.

Suggested Corrections or New Terms

Send corrections to or propose new terms for SLACspeak.

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Last Updated: 11/01/2018