Credit : CERN

Abstract

The open day is a regular feature of the “long shutdown” during which the LHC stop, to benefit from upgrades and renovation work. During this time, the CERN opens its doors to the public for two days with visits of both the underground and the surface, involving about 2 800 volunteers. Each visit point offers about 3-4 hour activities : visits of the facilities, experiments, labs and events.

IPPOG presentation (2019) : https://indico.cern.ch/event/855335/contributions/3598104/subcontributions/292107/attachments/1952901/3242659/OD19_IPPOG-281119.pdf

Contact

Authors :

• CERN

Supported by :

• CERN

Related IPPOG Collaboration member :

• CERN

Project status

Ongoing (updated 2025-04-22)

Files & Resources

• Website :
  – https://opendays.cern/
• 2019 open day :
  – [https://opendays.cern/](https://opendays.cern/)
• 2013 open day :
  – [https://web.archive.org/web/20130605205449/https://opendays2013.web.cern.ch/](https://web.archive.org/web/20130605205449/https://opendays2013.web.cern.ch/)
• 2008 open day :
  – [https://home.cern/news/press-release/cern/cern-opens-its-doors-world](https://home.cern/news/press-release/cern/cern-opens-its-doors-world)
• Third open day :
  – [https://timeline.web.cern.ch/cern-open-day](https://timeline.web.cern.ch/cern-open-day)