Gate Hours & Services

Main Gate Open 24 hours a day, 7 days a week   650-926-2551
Services provided at the main gate include:

After Hours and Holiday Site Access: Officers log in every car or individual entering SLAC property from sunset to 6:30 a.m. Site Access is also recorded on all shifts during weekends and holidays.

Directions and Maps: Directions and Maps are available 24 hours a day. Directions to SLAC from offsite are located on the "How to Get Here" page. (see also: SSRL Site Map)

Telephone Services: The Main Gate Security Officers provide general telephone assistance with call transferring, offsite calling, and overseas calls. For specific SLAC telephone information, refer to the SLAC Telephone User’s Guide.

Visitors: Security Officers will provide visitors with SLAC personnel contact/directory (SLAC phone directory) assistance, and directions and maps. If SLAC contact cannot be reached, visitors will be asked to wait in the Visitor’s parking lot until contact is made. If you are expecting a visitor and want to make their his/her experience as simple as possible, please contact the Main Gate security guards in advance to make prior arrangements for the visit.


Gate 17 Open 24 hours a day, 7 days a week
(during LCLS construction project)
650-926-2137
Main entrance to SSRL. After hours, weekends and holidays the Gate 17 Officer will log in every car or individual entering the Accelerator Area.

Sector 30 Gate    Open 24 hours a day, 7 days a week
(not recommended during LCLS construction)
650-926-2240

Alpine Gate Closed during LCLS construction project  650-926- 4016
A current SLAC training badge or a SSRL User picture ID badge is a mandatory entrance requirement for this gate and no exceptions are made. Temporary badges, CBT badges, and Contractor badges are not accepted at this gate.



Last Updated: 12 JAN  2007
Content Owner: C. Knotts
Page Editor: L. Dunn