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Service availability during CERN’s annual closure 2023/2024

General site services

As always, in addition to the Fire and Rescue service (+41 22 76) 74444, the Security service remains operational every day (24/7) and can be reached at (+41 22 76) 76666.

SCE department services that do not depend on continuous human presence will remain available, although at a reduced support level. In general, the response time for common issues will be half a day (but this is not guaranteed). To report urgent infrastructure issues during the annual closure, call the CCC TI operator at (+41 22 76) 72201.

Other services requiring human presence (such as Service Desk, CERN hostels, goods reception, shuttles, cleaning services, etc.) will not operate during the end-of-year closure.

The self-service Car Sharing and Bike Sharing services will remain available.

For more information, please consult the CERN Service Portal.

In addition, please note that the heating on the Meyrin and Prévessin sites will be switched to low-heat mode to maximise energy savings during this period of low occupancy. This will lead to a slight drop in temperature.

Computing services

Essential services provided by the IT department – including WLCG production services – will remain available.

Most problems will be dealt with on a best-effort basis only and the availability of specific services might be limited by the availability of other services. No interventions are scheduled – in case of a failure, there is no guarantee that services will be restored, and changes requiring on-site human intervention will not be possible.

Incidents will be listed on the CERN Service Status Board for Computing.

The Computer Centre Operator service will be available and can be reached at (+41 22 76) 75011 where urgent problems can be reported. Calls will be redirected to the CCC TI operator during absences.

Suspected computer-security incidents must be reported to Computer.Security@cern.ch or (+41 22 76) 70500 as usual.

Please remember to shut down and power off any equipment in your office whose operation is not required during the annual closure.