Tag: Long Shutdown 3
-

LS3 Safety Spotlight: coordinating activities at CERN: declaring interventions – a key step
As mentioned in our June and July articles, CERN has put in place a structure to meet the need to manage and oversee concurrent activities during Long Shutdown 3 (LS3). One of the key measures is systematically declaring interventions. Why declare your activities? This is a key step in obtaining formal authorisation to carry out
-

Waste management during LS3: we all have a role to play
Long Shutdown periods generate large volumes of waste across CERN sites. During Long Shutdown 3 (LS3), maintaining good waste management practices is particularly important to ensure safety and minimise environmental impacts and costs. As part of its environmental and sustainable development strategy, CERN has set environmental objectives for 2030, including specific targets related to waste
-

All CERN accelerators now on the road to HiLumi
CERN’s injector complex and Antimatter Factory took their final steps towards Long Shutdown 3 (LS3) this morning, as the last particle beams were extracted and the machines fell silent. This milestone follows the shutdown of the Large Hadron Collider (LHC) in June, which marked the beginning of LS3 for the Laboratory’s flagship accelerator. While the
-

Accelerator Report: Final countdown – CERN’s injector complex enters its last stretch before LS3
The LHC has already fallen silent for Long Shutdown 3 (LS3), but elsewhere across CERN’s accelerator complex the pace remains intense. With just a week and a half of beam operation remaining, the countdown has begun for all the machines, which will switch off their beams at 6.00 a.m. on Monday, 31 August, marking the
-
Efficiency meets environmental responsibility: commissioning CERN’s primary CO₂ cooling circuit
The ATLAS and CMS detectors require ultra-low, stable temperatures to protect their sensitive electronics. Traditional cooling systems rely on synthetic refrigerants like hydrofluorocarbons (HFCs), which, while effective, have a global warming potential thousands of times greater than CO₂. Seeking a sustainable alternative, CERN has turned to CO₂ itself – a natural refrigerant with a far
-

Coordinating activities at CERN: preparing your work to manage concurrent activities safely
As outlined in our June article, CERN has a coordination structure in place to manage and oversee concurrent activities, including for the demanding LS3 period ahead. Clearly defined activities, announced in advance, are essential to allow teams and coordinators to optimise safety for everyone. The preparation phase is fundamental: 1. Before starting any activity 2.
-

Accelerator Report: Pushing the LHC towards HiLumi LHC conditions… and cut!
The final weeks of Run 3 for the LHC have been among the busiest of its entire operational period. With physics production successfully completed on 14 June, the machine entered a two-week programme dedicated to studies with high-intensity beams, followed by a quench campaign. These activities were scheduled after the completion of the physics programme
-

Organising and coordinating activities during LS3: a shared responsibility
LS3 is set to be a busy period for CERN, with a wide range of activities taking place across the accelerators, experiments and buildings on the site – from construction, maintenance and upgrades, to consolidation and installation work, transport operations, tests and more. When these interventions overlap, the risks associated with concurrent activities increase. To

