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- How can physicists make particle accelerators more efficient?How can physicists make particle accelerators more efficient? The Super Proton Synchrotron (SPS), one of the many accelerators in CERN’s complex that will benefit from the EPA project. (Image: CERN) As particle accelerator technology moves into the high-luminosity era, the need for extreme precision and unprecedented collision energy keeps growing. Given also the Laboratory's desire to reduce energy consumption and costs, the design and operation of CERN’s accelerators must constantly be refined in order to be as efficient as possible. To address this, the Efficient Particle Accelerators project (EPA) has been established – a team of people from different accelerator, equipment and control groups across CERN who are working together to improve accelerator efficiency. A think-tank was set up following a 2022 workshop to plan upgrades for the High Luminosity LHC (HL-LHC), and it came up with seven recommendations on efficiency for the EPA to work on. “The idea was to look at efficienc…
- ATLAS probes Higgs interaction with the heaviest quarksATLAS probes Higgs interaction with the heaviest quarks A central aim of the ATLAS Higgs physics programme is to measure, with increasing precision, the strength of interactions of the Higgs boson with elementary fermions and bosons. According to the theory of electroweak symmetry breaking, these interactions are responsible for generating the masses of the particles. The interaction strengths can be determined by precisely measuring the Higgs boson’s production via and decay into the relevant particles. At the recent International Conference on High-Energy Physics (ICHEP) 2024, the ATLAS collaboration presented improved measurements of the strength of Higgs boson interactions with the three heaviest quarks: top, bottom and charm. The new results are based on a reanalysis of LHC Run 2 data taken in the years 2015–2018 with significantly enhanced analysis methods, including improved jet tagging. But what are jets and why do they need to be tagged? When the Higgs boson decays into a pai…
- Accelerator Report: LHC Run 3 achieves record-breaking integrated luminosityAccelerator Report: LHC Run 3 achieves record-breaking integrated luminosity LHC Run 3 began in 2022, with the recommissioning of the LHC at 6.8 TeV, resulting in the delivery of 39.7 fb⁻¹ of integrated luminosity, surpassing initial expectations. Luminosity is an important indicator of the performance of a collider: it is proportional to the number of collisions that occur in a given amount of time. The higher the luminosity, the more data the experiments can gather to allow them to observe rare processes. In the second year of Run 3 (2023), we faced challenges due to faults that required extended repair and recovery periods, resulting in the delivery of only 31.8 fb⁻¹. This year, though, luminosity production has exceeded expectations, reaching, on Monday 2 September, 88.9 fb⁻¹ for ATLAS and CMS, 7.6 fb⁻¹ for LHCb and 45.6 fb⁻¹ for ALICE. With approximately six weeks of luminosity production still ahead of us, the 2024 target of 110 fb⁻¹ for ATLAS and CMS is well within reach. The…
- How CERN IT keeps up with the data delugeHow CERN IT keeps up with the data deluge The new Prévessin Data Centre at CERN. (Image: CERN) At CERN, we are used to dealing with a deluge of data, but the numerical value behind the word “deluge” has significantly evolved over the years. Today, the average amount of collision data recorded on disk by the LHC experiments is a little under 3 petabytes (PB) per day, almost equal to the amount that was recorded in one month during Run 1. So far, the current 2024 proton run has written about 200 PB on disk. This figure is not far from the 204 PB of data recorded during the whole of Run 2 (2015–2 018). Data is set to crescendo in future runs and with future accelerators; the trend is already very clear but the details will evolve over the years. In 2020, it became clear that with the Meyrin Data Centre alone, CERN would not be able to cope with all the data produced by the LHC experiments. The only viable solution to increase storage and processing capacity was to build a new data cent…
- CERN70 Community Event: your questions answeredCERN70 Community Event: your questions answered An interactive village map, accessible via the CERN Campus App, shows facilities and services available throughout the 17 September CERN70 Community event, including parking areas and shuttle drop-off points. On Tuesday, 17 September, we will enjoy music, food, birthday cake and more to celebrate and thank our unique CERN community and our families. To prepare for the CERN70 Community Event, we answer some key questions: 1) REGISTRATION: Can I still register to attend? Yes, by popular demand the registration deadline has been extended to Monday, 9 September at 11.59 p.m. CEST. Click here to register. 2) FOOD VOUCHERS AND ACCESS CARDS: How do I get my food vouchers and CERN70 Guest access cards in advance? Bracelets with food and drink vouchers and CERN70 Guest access cards will be distributed to registered persons at the CERN Community Support Centre (Building 33) from 9 to 17 September, Monday to Friday, from 8 a.m. to…
- CMS welcomes its new managementCMS welcomes its new management The CMS collaboration welcomes its tenth management team: spokesperson Gautier Hamel de Monchenault and deputy spokespersons Anadi Canepa and Hafeez Hoorani. The new team began their mandate on 1 September 2024 and will represent the CMS collaboration until 31 August 2026. This is the tenth spokesperson team of the CMS experiment since the signing of its letter of intent just over 30 years ago. The next two years will represent a unique time in the history of CMS with the confluence of detector operations, analysis of unprecedented proton–proton and heavy-ion collision datasets, and the ambitious upgrade of the detector in preparation for the High Luminosity phase of the LHC. Thanks to an exceptionally versatile particle physics detector and the ingenuity and creativity of a diverse collaboration, CMS will continue to address the most fundamental particle physics questions, including advancing research into the Higgs boson. The CMS collabora…
- Refuse, reduce, reuse, recycle, repeatRefuse, reduce, reuse, recycle, repeat CERN’s Storage, Recuperation and Sales service (Building 133), shown here in the foreground, can help us all to reduce our contribution to CERN waste. (Image: CERN) Waste is unquestionably a major environmental challenge worldwide and one we all play a role in tackling. Effective waste management is a fundamental pillar of CERN’s efforts to minimise its environmental footprint. Did you know that conventional non-hazardous waste represents 70% of CERN’s total waste? Recycling is central to CERN’s waste reduction strategy and the Laboratory remains committed to continuously improving its recycling rate: for reference, 69% of conventional waste was recycled in 2022 compared with 56% in 2018. We all contribute to minimising waste, whatever the type. The Storage, Recuperation and Sales Service (Building 133) of the SCE department plays a key role in the refuse, reduce, reuse, recycle, repeat strategy. An unexpected hive of activity, this is the plac…
- Computer security: security workoutsComputer security: security workouts Summertime. The moment to get in shape. Jogging. Step aerobics. CrossFit. Push-ups. Shadow-boxing. Zumba. Pilates. Whatever. Or to just stay as you are ─ fit and healthy ─ that would do too! And as summer comes to an end, here some suggestions for mental workouts. Cerebral challenges. Massaging your mind. Just like your summer exercise regime, computer security requires permanent training to stay fit and healthy. Like for a marathon, it is not enough to know how to walk or run; training and exercising are a must. The body and mind need to be in sync and fit enough to take up the challenge. Again and again. Below you will find three (hundred) suggestions for refreshing and improving your skills in computer security. Whether you are a computer engineer, physicist, engineer, lawyer, or work in HR, communication, etc. The Zebra Alliance for everyone The Zebra Alliance hands-on training is a computer security incident simulation bringing together many d…
