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Groundbreaking CMS calorimeter for the High-Luminosity LHC

CMS has recently completed the first prototype slice of its innovative High-Granularity Calorimeter (HGCAL), which will be the largest silicon-based detector ever built

News
Experiments
29 January, 2026
Experiments
News
29 January, 2026
Experiments
News

Accelerator Report: Run 3 operations counting down to LS3

Linac4 and the PS Booster have already completed their standalone beam commissioning successfully and have handed over the baton to the PS

News
Accelerators
29 January, 2026
Accelerators
News
29 January, 2026
Accelerators
News

4 February | Annual testing of sirens across Switzerland

Announcement
At CERN
29 January, 2026
At CERN
Announcement
29 January, 2026
At CERN
Announcement

Take part in the 2026 Mentoring@CERN programme

If you’re looking for guidance, a sounding board or the chance to share your experience, the Mentoring@CERN programme is for you.

Announcement
At CERN
28 January, 2026
At CERN
Announcement
28 January, 2026
At CERN
Announcement

Heating homes with the world’s largest particle accelerator

Now operational, a new heat exchange system is reusing hot water from part of the Large Hadron Collider’s cooling system to heat homes and businesses in the local area

News
At CERN
28 January, 2026

Presidential visits to CERN

The President of Lithuania and the President of Armenia visited CERN on 19 January

News
At CERN
28 January, 2026
At CERN
News
28 January, 2026
At CERN
News

The new Duty Travel website is now online

Announcement
At CERN
28 January, 2026
At CERN
Announcement
28 January, 2026
At CERN
Announcement

Computer Security: A final dash to protect your account

We already discussed mandatory requirements for IT service managers in a past issue of the Bulletin. This time we present upcoming changes to passwords and improvements to two-factor authentication

News
Computing
27 January, 2026

European labs get aligned at CERN

Eleven laboratories have all come to CERN to measure a girder, using their state-of-the-art equipment to establish a common definition of alignment uncertainty

News
Engineering
26 January, 2026
Engineering
News
26 January, 2026
Engineering
News

Upcoming events

Check out this curated list of upcoming events for the CERN community

Announcement
At CERN
26 January, 2026
At CERN
Announcement
26 January, 2026
At CERN
Announcement