Argonne National Laboratory

The Center for Nanoscale Materials (CNM) is open Monday through Friday, 7 a.m. to 7 p.m. Central Time. Off-hours work can be conducted, with prior authorization, outside of normal business hours and on weekends.

Holiday Schedule

Argonne National Laboratory, including the Center for Nanoscale Materials (CNM), is closed on the following holidays.

Holiday 2024
New Year’s Day Monday, January 1
Martin Luther King Day Monday, January 15
Memorial Day Monday, May 27
Independence Day Thursday, July 4
Labor Day Monday, September 2
Thanksgiving Day Thursday, November 28
Day after Thanksgiving Friday, November 29
Christmas Eve Tuesday, December 24
Christmas Day Wednesday, December 25
New Year’s Eve Tuesday, December 31

Winter Break

Argonne Laboratory will be closed beginning December 22, 2024, at 5:00 pm CST until January 2, 2024 at 7:00 am CST. The CNM suspends user operations during this closure; neither the CNM building nor CNM staff, including administrative support, is available to users at any time during the winter break.

The winter break will be followed immediately by a preventive maintenance period for a week to be determined in January 2025. During this period some capabilities may be unavailable at times and the servicing of some infrastructure systems may affect operations. More information will be sent to the user community as the date nears.

Maintenance Periods

The CNM remains open to you during maintenance periods; however, certain capabilities may not be available and some utilities may not be operating at normal conditions. Please confirm with your CNM Scientific Contact whether your capability will be affected and plan your work visits accordingly.

We schedule three maintenance periods each year, lasting about one week each, to perform preventive maintenance on scientific instruments, their support equipment and building infrastructure systems. This helps us avoid unplanned shutdowns so your experience at CNM is smooth and productive from start to finish.

2024 Maintenance Periods

  • January 6-14, 2024
  • May 4-12, 2024
  • September 7-15, 2024