CERN Bulletin Nos 44 & 45 – 3 & 11 November 2010 The new Building for Linac4 Reaffirming a long-standing is ready ahead partnership ERN welcomes many VIP visi- of schedule Ctors, and each one is special. However, last Saturday’s visit from Irina Bokova, the Director-General of UNESCO, has particular significance. UNESCO was the organization that steered CERN into existence in the 1950s, and it is at UNESCO’s head- quarters that our founding docu- ments are held. (Continued on page 2) News The new Building for Linac4 is ready ahead of schedule 1 A word from the DG 1 The latest from the LHC: Last period of proton running for 2010 2 In this issue CLIC/ILC researchers explore new avenues for collaboration 3 A New Look for the Globe Gardens 4 Cosmic ray synergies 5 Entrance to new Linac 4 tunnel. Retina neural circuitry seen with particle detector technology 6 GLIF – Striving towards a high-performance- or the time When various teams work together efficiently to achieve a on-demand network 7 being, the new common goal, not only are projects successfully completed but Apprenticeship: a worthwhile option 8 t w o - s t o r e y CAS Introduction to Accelerator Physics F 2 they may ever be ready before the deadline. On 22 October, 3000 m building in Bulgaria 9 looks like a huge after two years of civil engineering work and about two months Supertramp (de)tour to CERN 10 empty hangar. Very ahead of schedule, the building that will host the new Linac4 Dutch hi-tech companies exhibit at CERN 10 soon, though, the was unveiled in the presence of the Director-General and of Steve A big win for the CERN Golf Club at the ground floor will start Myers, Director for Accelerators and Technology. ASCERI tournament 11 to be filled with the Going Underground in Singapore 11 technical equipment and the klystrons. The faced was having to build the tunnel up to Winner of video contest inspired by the LHC 12 Linac4 itself will be installed in the tunnel the wall of the PS area without causing any An 80th birthday celebration for the Ericsons 12 excavated below the ground. “Being 12 interference to the running machines. All Ombuds’ Corner 13 metres underground, deep inside what the activities, in particular the excavation, News from the Library 13 remains of the old “Mount Citron”, the have been conducted with great care, in Official 14 tunnel provides excellent shielding for the order to minimize any shocks and vibration”, Take note 14 new accelerator”, says Maurizio Vretenar, explains Luz Anastasia Lopez Hernandez, Technical training 17 Linac4 Project Leader. the CERN official responsible for the civil Seminars 18 engineering of Linac4. Indeed, Linac2, the The tunnel will be connected to the PS PS Booster and the PS are the start of the Booster that sits on a level two and a half LHC injector chain and any disturbance to Published by: metres higher. “One of the challenges we them could interfere with the overall per- The European Organization for Nuclear Research - CERN formance of the accelerator chain. 1211 Geneva 23, Switzerland - Tel. + 41 22 767 35 86 Printed by: CERN Printshop © 2010 CERN - ISSN: Printed version: 2077-950X (Continued on page 2) Electronic version: 2077-9518 www.cern.ch/bulletin The new building for Linac4 is ready (Continued from page 1) ahead of schedule But that’s not all. In addition to the techni- cal constraints - which also included the (Continued from page 1) maximum length available for the tunnel, Did you a challenge for the accelerator experts – know? Reaffirming a long-standing CERN engineers faced another problem: partnership given the position of the tunnel, the new building would have had to sit across the Today, CERN and UNESCO have much French-Swiss border, just a few metres from Linac4 is one of the major renovation in common. Both have the promotion a 200 year-old milestone dating back to the projects for the CERN accelerator com- of science and of global cooperation Congress of Vienna. Current regulations plex and is the first project to be built in as part of their missions, and both set forbid this, so the final shape of the building the framework of the LHC upgrade pro- great store by the power of education was non-rectangular, cleverly avoiding the gramme approved by the CERN Council to change the world for the better. borderline! which allocated additional resources amounting to 240 MCHF for the period “The secret to the success of the work was 2008 to 2011. UNESCO has been an observer at the the good cooperation among the teams CERN Council ever since our founda- working under the excellent coordination of Linac4 is scheduled to be commissioned tion, and in recent years our converg- the GS Department”, says Maurizio Vretenar. in 2013-14 and connected to the PS ing interest in forging links with the “Every problem that came up during the Booster during the 2016 shut-down. developing world has seen important construction work was solved in record It will supply beams at an energy of joint initiatives. In 2009, CERN held time. This allowed us to be ahead of sched- 160 MeV, compared to the 50 MeV two schools in Kigali, Rwanda, cover- ule and within the budget”. beams of the current Linac2. This will ing the subjects of digital libraries make it possible for the PS Booster to and teacher training. Both promoted The first modules of the new Linac4 are deliver a beam intensity twice as high, Rwandan and African expertise, and expected to arrive and be lowered down in which will contribute to increasing the both were held within the framework 2012. The accelerator should be completed LHC’s luminosity. of UNESCO’s International Basic Sci- by 2014. ence Programme (IBSP). Their success Moreover, Linac4 has been designed to has led to a repeat being organized Francesco Poppi take into account future upgrades of the next month in the Moroccan city of accelerator complex. Rabat, bringing together people from Morocco, Algeria, Benin, Cameroun, Senegal and Tunisia. Some of the participants will then spend a month at CERN. Ms Bokova’s visit gave us the chance to The latest from the LHC: Last period discuss other initiatives that our two organizations are working towards. One, for example, concerns the differ- of proton running for 2010 ences in school physics curricula from one country to another. A workshop planned for the second half of 2011 uring the recent technical stop, luminosity experiments. Routine opera- will address this question, looking at which was brought forward by tion with 25 MJ stored beam energy was how good physics teaching can make D two weeks to 19-22 October, an achieved. a real difference to development and aperture restriction in the beam 1 injec- sustainability. tion channel at Point 2 of the LHC was For the last week of proton running in successfully repaired. The machine was 2010, attention will shift to operation restarted on Friday 22 October, with the with 50ns bunch spacing, the scheme On Saturday, Ms Bokova and I also priority to re-establish clean injection planned for 2011. The aims for this last discussed a new agreement between conditions in the repaired injection chan- week are two-fold: to uncover any unex- CERN and UNESCO that would allow us nel. This was achieved over the weekend, pected problems with the 2011 scheme to put such initiatives on solid ground, resulting in a return to physics operation and, if all goes well, to rapidly increase rather than each being managed with 312 bunches per beam on Sunday the number of bunches and continue on an ad-hoc basis. Our discussions 24 October. to deliver integrated luminosity to the confirmed our convergence of views experiments. This will be followed by a and objectives, and reaffirmed our Since then, the number of bunches has short period of machine development mutual commitment to develop and been increased to 368, still using the with proton beams early next week. strengthen the cooperation between 150ns bunch spacing scheme employed our organizations. since late September. This has seen peak Around 3 November, the 2010 proton luminosities in excess of 2 x 1032 cm-1 run will end and operation with lead s-1 and delivered integrated luminosity ions will start, continuing until early Rolf Heuer climbing above 48 pb-1 in the highest December. CERN Bulletin 2 – 3 & 11.11.2010 A New Look for the Globe Gardens f ter months Designs to develop the grounds of the Globe of Science and buildings. “The current plans develop the of conceptual Innovation have recently been unveiled. The plan is to extend area surrounding the Globe; however, a development, broader vision for the whole area between A the visitor activities on offer, transforming the area into a public plans to develop the Entrance A and B is being considered”, site around the Globe arena for scientific exploration. explains Gillies. are taking shape. The innovative designs were drawn up for CERN The design creates a new public space The design sketches are now being con- by a unique collaboration consisting of land- for CERN’s regional neighbours, and has verted into architectural drawings, which scape architects Charles and Lily Jencks, and already attracted the attention of local will be presented by the end of March. “Group H”, a group of architects headed by authorities. “Representatives of the Projet These plans will detail the scale and cost of Globe designer Hervé Dessimoz. They com- d’Agglomération franco-valdo-genevois have the project, and will allow CERN to begin the prise new venues, covered walkways, a café expressed their support for the project”, says fundraising from external sources that will and gift shop, a separate VIP entrance and Friedmann Eder, head of CERN’s Relations turn the plans into reality.