Site Access

All visitors 16 years of age or over must present a valid form of photo identification. 

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Site access to Argonne National Laboratory is allowed only with an ID badge or a visitor pass. A visitor pass can be arranged by contacting Natalie Chen.

The gate pass may be picked up at the Argonne Information Center (AIC) located just outside the Main Gate Guard House off Cass Avenue. The Center is open Monday-Friday, 6:30 a.m. – 5:00 p.m. CST. A pass may be left at the Guard House for pick up during times when the AIC is not open.

A site access visitor pass alone does not permit a user unescorted access to the APS facility; either a temporary or permanent Cardkey® badge is needed for unescorted APS access.


Gate Hours​

  • Main Gate (on Northgate Rd. off Cass Ave.)
    24 hours a day, 7 days a week
  • West Gate (on Westgate Rd. off Lemont Rd.)
    6:15 am – 7:10 pm Monday-Friday
  • East Gate (on Eastwood Dr. off Cass Ave.)
    6:25 am – 9:15 am Monday-Friday
    3:30 pm – 6:00 pm Monday-Friday

Administrative Contact

Natalie Chen
NSF’s ChemMatCARS Sector User Coordinator
(630) 252-0476