Site Access

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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 calling the CARS administrative office at the APS, 630-252-0450, the CARS main office, 773-702-9951, or by email to Kathryn Tietz at tietz@cars.uchicago.edu. The gate pass may be picked up at the Argonne Information Center located just outside the Main Gate Guard House off Cass Avenue. The Center is open M-F, 6:30a.m. -5:00p.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 (all times CST)