CERN Accelerating science




CERN's Community "Log Book" turns 50

For five decades, the CERN Bulletin has been a staple of the Organization. As CERN has grown as a laboratory and a community, the Bulletin has been there to cover each development as it happens. In honour of the publication's 50th anniversary, we're taking a trip through CERN’s history via the headings and hidden corners of its internal newsletter.   >>

The slings and arrows of LHC restart schedules

We should now have been celebrating the first circulating beams of LHC Run 2, but, as I reported last Tuesday, I find myself instead having to write about a delay in proceedings. Against a backdrop of great progress in the powering tests for running at 6.5 TeV, a short to ground in one of the LHC’s thousands of circuits became apparent on 21 March. >>

LHC Report: a brief deceleration

The LHC has now transitioned from powering tests to the machine checkout phase. This phase involves the full-scale tests of all systems in preparation for beam. Early last Saturday morning, during the ramp-down, an earth fault developed in the main dipole circuit. Full evaluation of the situation is ongoing. >>

Tracking the LHC halo

In the LHC, beams of 25-ns-spaced proton bunches travel at almost the speed of light and pass through many different devices installed along the ring that monitor their properties. During their whirling motion, beam particles might interact with the collimation instrumentation or with residual gas in the vacuum chambers and this creates the beam halo – an annoying source of background for the physics data. Newly installed CMS sub-detectors are now able to monitor it. >>

MoEDAL: Passive but no less active

Relying almost completely on passive detectors, MoEDAL is a pioneering experiment designed to search for highly ionising avatars of new physics, such as magnetic monopoles or massive (pseudo-)stable charged particles. The first test detectors were deployed at LHC Point 8 in 2012 and analysed in 2013, and the full MoEDAL detector was installed in the winter of 2014 to start data-taking during Run 2 this year. >>

KT Fund: Five years of funding for impact

Cryogenic safety, ion beam therapy, event management for communities, emergency lighting… this year’s applications for funding through the Knowledge Transfer Fund demonstrate the breadth of possible applications of CERN technology beyond high-energy physics.   >>

Intelum project: tackling the calorimetry challenge for future high-energy colliders

Intelum is one of the CERN-coordinated projects funded under H2020. It aims to develop low-cost, radiation-hard scintillating and Cherenkov crystal and glass fibres for the next generation of calorimeter detectors for future high-energy experiments. This new technology could also have important applications in the medical imaging field.   >>

Building 774: open for business

In July 2012, the demolition of Building 936 on the Prévessin site marked the start of the Building 774 project. On 23 February, less than three years later, the new 3900 m2 building was handed over to the BE department. >>

New arrivals

On Thursday, 12 March 2015, recently recruited staff members and fellows participated in an introductory session in the framework of the Induction Programme. >>

Did you miss the eclipse?

Not wanting to miss a moment of the beautiful celestial dance that played out on Friday, 20 March, Jens Roder of CERN’s PH group took to the Jura mountains, where he got several shots of the event. Here are a selection of his photos, which he was kind enough to share with the Bulletin and its readers. >>

Computer Security: CERN Secure Password Competition

It’s time for a spring clean at the CERN Single Sign-On portal. We will take this opportunity to review all 20,000+ passwords used with CERN primary, secondary and service accounts. This campaign has three purposes: to identify password duplicates, to extend the password history rule to all CERN accounts, and to reward the “best” passwords used at CERN. >>

Gate A: changes to opening hours

Due to maintenance work, the opening hours of Gate A (near Reception) will be modified between Monday, 13 and Friday, 17 April 2015. >>

Blood donation | 31 March

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Official News

Administrative Circular No. 2 (Rev. 7) - Recruitment, appointment and possible developments regarding the contractual position of staff members  

Training and Development

Safety Training: places available in March and April 2015  
Places available - Technical management courses (up to the end of July)  
Laser training courses: new purpose-built room for practical exercises  
Personal Development and Communication courses  
Language training  


Restaurant closures during holiday period  
2015 European School of High-Energy Physics  
Prévessin site: Pedestrian and cycle entrance  
THE Port is looking for your input  
Calibration of "Babyline" RP instruments  
Gate A: changes to opening hours  
CERN Accelerator School: Registration open for Advanced Accelerator Physics course  
Blood donation | 31 March  
Route Scherrer and Route Einstein closed for construction work  


Academic Training Lecture | Practical Statistics for LHC Physicists: Descriptive Statistics, Probability and Likelihood | 7-9 April  
Lifelines: faces and breaths from Palestine  

Staff Association

The Director General withdraws its proposal to Council  
CERN Yachting club  
Cine club  
Orienteering club  
Record club  



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