ATLAS resumes operation after LS2 shutdown

This year saw the long-anticipated start of the LHC Run 3, and the excitement was tangible in the ATLAS control room during the afternoon of the 5th of July when the LHC proton beams were expected to be brought into stable beam collisions, for the…

Upgrading the ATLAS Level-1 Central Trigger

The ATLAS trigger system consists of a first-level trigger based on custom electronics and firmware, and a high-level software trigger (HLT) running on off-the-shelf hardware. The first level trigger (see Figure 1) uses information from calorimeters…

ALICE records first heavy-ion collisions

Following an intense period of upgrades, a totally revamped ALICE experiment statred  a very challenging period of commissioning with beam and data-taking during the first year of the LHC Run 3. The ALICE detector has undergone a major upgrade…

A word from the EP Deputy Department Head - December 2022

Dear colleagues, As 2022 draws to a close, we can look back and reflect on a year with many surprises and challenges, first and foremost the ongoing Russian invasion of Ukraine, and the consequent energy and inflation crises.  These are challenges…

New Staff Members and Fellows

The Phase-2 Upgrade of the CMS Data Acquisition system

Even though Run-3 data taking has only just started, the preparations for the next phase of the LHC physics programme are well under way. Just like the LHC, during LS3 many of the LHC experiments will receive significant upgrades.  In order to…

Discussing the physics of feebly-interacting particles

FIPs are any kind of beyond-the-Standard Model (BSM) particles with couplings much less than one, consisting of such well-known phenomena as dark matter (DM), axions / axion-like particles (ALPs), heavy neutral leptons (HNLs), and dark photons.…

Spotlight on Hybrid Pixel Sensors

Prelude Making the next pivotal discovery in particle physics depends on our ability to build new experiments aiming at pushing the boundaries of energy and intensity frontiers. The process of designing and building such apparatuses often originates…

Celebrating LGBTQ+ in STEM

Over the past years, CERN constantly strives to implement inclusive policies for all, including for personnel who identify as LGBTQ+ and who dream to pursue a career in science, engineering and technology. Moreover, given its prestigious role as a…

CMS sails to explore new undiscovered territories

Run 3 started on July 5, 2022, and paused with the shutdown of the machine on Monday, November 28 at 6 a.m. CMS recorded an integrated luminosity of nearly 40/fb (see Fig. 1, making for a particularly fruitful startup run. Figure 1: Luminosity…