CERN

CERN CERN is the European laboratory for particle physics, home to the LHC. This page shares news and information about CERN and highlights CERN job opportunities.

Here, scientists study the fundamental particles that make up the world around us. — All media © CERN, human-generated unless otherwise stated. TAKE PART !

Can you guess what they are doing?Hint: keeping it cool is part of the job. ❄️We’ll share the answer on Monday.
31/07/2026

Can you guess what they are doing?
Hint: keeping it cool is part of the job. ❄️

We’ll share the answer on Monday.

A closer look at particle tracking 👀 to the 1980s, in the wire chambers of the R807 experiment at CERN's Intersecting ...
30/07/2026

A closer look at particle tracking 👀

to the 1980s, in the wire chambers of the R807 experiment at CERN's Intersecting Storage Rings (ISR).

Wire chambers are detectors that help physicists track the paths of charged particles as they pass through. At the time, the electronics behind these chambers were among the most advanced in the world, processing huge amounts of data in real time to help researchers study .

: a few years later, these wire chambers were used in the OBELIX experiment at CERN's Low Energy Antiproton Ring (LEAR), which ran until 1996, contributing to interactions between matter and antimatter.

Find out more about antimatter research : https://home.cern/science/physics/antimatter/

Preparing for the road to 💫CERN’s features the dismantling of the beam vacuum assembly in the ATLAS Experiment at CE...
29/07/2026

Preparing for the road to 💫

CERN’s features the dismantling of the beam vacuum assembly in the ATLAS Experiment at CERN.

Beam vacuum assemblies are specialised ultra-high vacuum tube sections which allow particle beams to circulate without colliding with air molecules. They are situated on both sides of the ATLAS experiment, guiding the particle beams to their collision point.

These vacuum assemblies are being dismantled during the Long Shutdown 3 – a major programme of maintenance, consolidation, upgrades and installation work that will prepare the Laboratory for the – to allow opening of the ATLAS experiment.

For this process, multiple teams intervene under challenging working conditions to ensure safe extraction of the sensitive equipment.

Applications are now open ⏱️Join us this November in Prague, Czech Republic for the CERN Accelerator School, in collabor...
28/07/2026

Applications are now open ⏱️

Join us this November in Prague, Czech Republic for the CERN Accelerator School, in collaboration with Charles University, for a specialised course on Circular e+/e- Colliders and Light Sources.

The course is designed for postgraduate students, early-career professionals and experienced experts interested in physics and technologies behind next-generation electron-positron colliders and advanced synchrotron light sources.

Over two weeks, participants will explore the challenges and opportunities of circular e+/e- colliders and low-emittance electron rings, while developing the specialised knowledge and technical skills needed to help shape the next generation of particle accelerators.

📍 Prague, Czech Republic
📆 8–20 November 2026
🔗 Registration: cas.web.cern.ch

Can you guess what they’re doing?Hint: alignment is key…and cool 🔑Here we see the alignment of a beam position monitor (...
24/07/2026

Can you guess what they’re doing?
Hint: alignment is key…and cool 🔑

Here we see the alignment of a beam position monitor (BPM) inside a superconducting magnet using a laser tracker.

To ensure the BPM can accurately measure the beam position, it must be aligned with extreme precision. Engineers use a laser tracker to align ​the BPM inside the magnet's cryostat.

Unlike other BPMs, those developed for must absorb the secondary particles produced by high-luminosity collisions.

To manage this, the BPMs operate at cryogenic temperatures and feature tungsten absorbers as well as laser-welded external cooling tubes. These tubes circulate liquid helium to keep the devices cool.

Welcome to the July/August edition of 💫This issue reports on a ten-year search for a dark sector through missing energ...
23/07/2026

Welcome to the July/August edition of 💫

This issue reports on a ten-year search for a dark sector through missing energy, the open-source framework that unified beam simulation , two decades in which particle physics went global, and much more.

Read more: cerncourier.com

📸 Credits:
1. Cover by Philippe Dinault
2. Julien Marius Ordan
3. & 4. CERN
5. X-ray, NASA/CXC/CfA/Á Bogdán; infrared, NASA/ESA/CSA/STScI; processing, NASA/CXC/SAO/P Edmonds and L Frattare
6. Max Badulin

A spark from the past ✨This brings us to 1963, in the neutrino spark chamber – a particle detector consisting of stack...
23/07/2026

A spark from the past ✨

This brings us to 1963, in the neutrino spark chamber – a particle detector consisting of stacked metal plates submerged in an inert gas (like helium and neon) which identifies elusive neutrino interactions.

Proposed initially in 1959 by Italian physicist Gilberto Bernardini, the spark chamber was utilised alongside heavy-liquid bubble chambers (such as Gargamelle) to investigate neutrino beams .

The chamber weighed several tonnes and provided a unique combination of high spatial resolution, significant target mass, and the fast sensitive time required for quantitative neutrino experiments.

Summer students 💻This features a lecture given by CERN’s Director General Mark Thomson to the 2026 class of summer s...
22/07/2026

Summer students 💻

This features a lecture given by CERN’s Director General Mark Thomson to the 2026 class of summer students in the audience.

The CERN Summer Student Programme offers STEM students pursuing bachelor’s or master’s degrees the unique opportunity to join in the day-to-day work of CERN’s experiments and attend lectures specially prepared for them by scientists from around the world.

Find out more about the summer studentship: careers.cern/summer

Reading the layers beneath Lake Geneva 💧Understanding what lies beneath the surface is essential to assessing any major ...
21/07/2026

Reading the layers beneath Lake Geneva 💧

Understanding what lies beneath the surface is essential to assessing any major underground infrastructure project.

For the placement studies for the proposed Future Circular Collider ( ), this means developing the most accurate possible picture of the geological formations along the proposed tunnel route, including beneath Lake Geneva.

Find out more about the geological investigations for the FCC studies: https://voisins.cern/fr/node/2973

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