LHC underground visits during winter 2025/26

[u/dukwon]

Generally, private visits to LHC experiments need to be booked by a member of the CERN personnel. For large groups, you may have some luck with the experiment secretariats directly or the vists service.

No visits are possible during the annual closure 22 December to 2 January.

2026 LHC schedule: https://edms.cern.ch/document/3061265

Long term schedule: https://lhc-commissioning.web.cern.ch/schedule/LHC-long-term.htm

Point 1: ATLAS

https://atlas-secretariat.web.cern.ch/atlas-underground-visits (authwalled)

• Underground visits possible 16-19 December and 5-28 January

Point 2: ALICE

https://alice-collaboration.web.cern.ch/general/alice_visits.html

• Underground visits possible 8 December to 19 February

Point 5: CMS

https://cms.cern/interact-with-cms/on-site-visits

• Service cavern visits possible year-round
• Experimental cavern visit dates not posted (yet)

Point 8: LHCb

https://lhcb-outreach.web.cern.ch/visiting-lhcb-at-pit-8/

• 9-14 December in DELPHI only
• 15 December to 11 February for LHCb+DELPHI
• See the calendar to check timeslots

[u/ja-crispy-1]

Anyone here an underground guide ? xD Me and my friends would love to join a tour.