Arrival Procedures

First-time Users must first get registered and complete the online training courses prior to arrival at SLAC. Follow the instructions here.

Visitors: If you are just visiting SLAC and are not a user (that is, someone affiliated with an accepted experiment at FACET-II), you need to be invited by a SLAC employee who will arrange the site visit by filling out the site entry request form. ID will be required by the security guards on the Sand Hill Gate.

Please feel free to provide feedback on VUE center experience.

Planning your arrival (first and repeat visits)

Each individual must check that the information in their profile in the User Portal is up-to-date and check that they have completed their assigned training ( If they do not have an account, they must register. 

There are unique requirements for Foreign Nationals. See the VUE center web page for details: Expect delays at the badging office.

The Covid-related instructions on this page assume that you are vaccinated.

Notify your Facility POC and the FACET-II User Manager (Christine Clarke) once you know your travel plans and share the details (arrival date-time, departure date-time). Often the Principal Investigator or single POC for an experiment does this for all participants at once (this is preferred).
The FACET-II User Manager will schedule practical training sessions to coincide with your arrival as is necessary. Please organize this directly with the FACET-II User Manager through a single POC per experiment team.

Verify that you have a SLAC windows account and it works to access the health check tool. You will need to use this if you feel unwell with potential covid symptoms when you are at SLAC or if you need to report a close contact with someone that tests positive. 

Arrival - Picking up your badge and dosimeter

Upon arriving at SLAC, show photo identification to Security at the Main Gate on Sand Hill Road and check-in User Office in the VUE Center ( If you are not a US citizen, you will need to show original passport and visa documents and your CV.

You will need to prove vaccination status. Original documents are not required- a photograph or copy would suffice.

Outside of working hours, you can usually get a temporary badge and/or dosimeter at the Main Gate if we have advance notice and have already verified immigration documents and pre-signed the form A. The form A can be accessed here. Send this to the FACET-II User Manager Christine Clarke( with your expected arrival time. She will send you back the signed copy. Print it off and bring it with you to the Main Gate. You won't be allowed on site without a badge outside of working hours. Note that given how long it can take at badging, Foreign Nationals are advised that they should check in before 4pm. If there is risk of travel delays, you may wish to arrange for after-hours checkin just in case.

Once your training and documentation is verified at the VUE center (building 53), you will be issued a badge and dosimeter.

Covid Testing and Social Distance after travelling to SLAC

Jul 1, 2022: Currently medical masks are required regardless of travel or vaccination status indoors at SLAC. This means surgical masks or better and not cloth masks (alone). Surgical or N95 masks can be provided to you if you don't have any. 

When on site, you can test once or twice per week through our Color program. We request that you take a test on day one of your arrival and then on day five after your travel to SLAC. After that, you may get tested following your own preference but we ask that no one tests more than twice per week as this could put too much load on the system. 

You will be enrolled in our testing program when you arrive and you can both pick up and drop off kits in B053 (near the badging office).

Until the second negative test result, please keep distance (6 ft/ 2 m) from other people to the extent possible and also wear a medical mask (surgical or better- surgical and N95 masks can be provided to you if you don't have any). Note that this mask requirement is in place even if the general indoor masking requirement is lifted. International travellers are encouraged to arrive a week in advance of scheduled tunnel work as this social distance is hard to maintain and the risks from international travel are heightened. However, you are not prevented from coming on site. Domestic travellers may also wish to consider early arrival.

After the second negative test, masking is recommended but not required unless there is an indoor masking rule in effect at SLAC.

The general instructions for our Color testing system are at an internal slac page:


For those without access to the internal page, the basics are:

  • Create a Color account at: You can register any email address to receive communications from Color, however you will be asked to confirm your eligibility by entering your "organization email address" (in this case, the  home institution email).  (The create account is one page and then the next page will be confirm eligibility)
  • Pick up Test Kits at SLAC - Testing kits can be picked up at the Security Lobby Desk in SUSB, Building 053, at any time 24/7. Bring your SLAC ID Badge to scan for access/receipt; this is required each time upon picking up kits.  Security will normally hand out 2-4 kit packages at a time. 
  • When you are ready to actually do the swab and testing, then activate the kit (be sure and do this on the SAME DAY it will be turned in, before 5pm).  This is done using the barcode or number on the physical kit that has been picked up.  URL for kit activation is  Please do the testing in an area that will not be contaminated by others nearby - do not use a multi-access bathroom, for instance, but rather a private huddle room or an outside courtyard with nobody else around.  There are directions on the Color page for directions on how to do the swab test.


(Note that regular log-in for color is just at  - once an account is created, don't go back to the create account url again or things will get confusing.)


The swab samples can be returned at one of two drop-box locations at SLAC. The samples are picked up three times a day Monday through Friday, and once a day Saturday and Sunday.  - SUSB Building 053, outside main doors. Drop-off deadlines are M - F 8:30am, 11:30am or 5:00pm, and Sat/Sun 4:30pm  - SLAC Occupational Health Center, Building 028 outside main doors.  Drop-off deadlines are M - F 8am, 11:00am or 4:30pm, and Sat/Sun 4:00pm 

Ready to Work

Don't forget to complete the on-site practicals and to get your site orientation before working inside FACET-II. Your facility POC will be able to give the site orientation and confirm that you are allowed to begin work.


Questions not addressed on this page may be answered in our FAQ.

Leaving us? Follow our exit procedure...