I NTERNATIONAL J OURNAL OF H IGH -E NERGY P HYSICS CERNCOURIER WELCOME V OLUME 5 6 N UMBER 3 A PRIL 2 0 1 6 CERN Courier – digital edition Welcome to the digital edition of the April 2016 issue of CERN Courier. The issue went to print while the LHC resumed operation after the technical stop that started in December 2015. At the same time, in another accelerator, SuperKEKB in Japan, beams have completed their first turns. However, the spotlight these days is not so much on accelerator physics as on the discovery of gravitational waves by the LIGO interferometers in the US, which is gaining the interest of the whole scientific community. The interview with Barry Barish, one of the founding fathers of LIGO, proves just how hard scientific endeavours can sometimes be. Hard, but also extremely rewarding. Coming back to closer universes, this issue also features articles about CERN’s neutron facility, ALICE’s new TPC, and science carried out with a PET cyclotron. Last but not least, Interactions & Crossroads brings you information about interesting conferences in physics and related fields around the world. To sign up to the new issue alert, please visit: http://cerncourier.com/cws/sign-up. To subscribe to the magazine, the e-mail new-issue alert, please visit: http://cerncourier.com/cws/how-to-subscribe. A strong belief 80 D0 Run II, 10.4 fb–1 2 data TETRAQUARKS AWAKE fit with background shape fixed 60 background signal ACCELERATOR 40 20 N events / 8 MeV/c DZero collaboration The plasma cell is in 0 10 discovers a new its fi nal position MILESTONE 0 –10 residuals (data-fit) EDITOR: ANTONELLA DEL ROSSO, CERN 5.5 5.6 5.7 5.8 5.9 particle p10 Japan’s SuperKEKB 0 ± 2 DIGITAL EDITION CREATED BY JESSE KARJALAINEN/IOP PUBLISHING, UK m (Bs π ) (GeV/c ) p13 achieves “fi rst turns” p11 CERNCOURIER www. V OLUME 5 6 N UMBER 3 A PRIL 2 0 1 6 CERN Courier April 2016 Contents Covering current developments in high-energy physics and related fi elds worldwide FAST-PS CERN Courier is distributed to member-state governments, institutes and laboratories affi liated with CERN, and to their personnel. It is published monthly, except for Up to ±30 A or ±80 V Digital Bipolar CERNCOURIER NGPS January and August. The views expressed are not necessarily those of the CERN management. FAST-PS-M High-Stability Power Converter - up to 10 kW OLUME UMBER PRIL Up to 100 A Digital Monopolar Editor Antonella Del Rosso V 5 6 N 3 A 2 0 1 6 Books editor Virginia Greco CERN, 1211 Geneva 23, Switzerland A New Generation of Power Supplies E-mail [email protected] Fax +41 (0) 22 76 69070 5 V IEWPOINT Web cerncourier.com Luis Alvarez-Gaume, Peter Jenni, Christine Sutton, Claude Amsler, A completely new generation of power converters with outstanding performances Advisory board 7 N EWS Roger Bailey, Philippe Bloch, Roger Forty The LHC is restarting Searches with boosted topologies at Bipolar or Unipolar output Laboratory correspondents: • • Argonne National Laboratory (US) Tom LeCompte Run 2 Anisotropic fl ow in Run 2 CMS hunts for supersymmetry Current and Voltage control Brookhaven National Laboratory (US) P Yamin • • Cornell University (US) D G Cassel in uncharted territory • LHCb awards physics prizes for its Kaggle Digital control loop DESY Laboratory (Germany) Till Mundzeck competition Another important step for the AWAKE experiment EMFCSC (Italy) Anna Cavallini • Enrico Fermi Centre (Italy) Guido Piragino BESIII makes fi rst direct measurement of the cΛ at threshold Multiple Fast Interfaces (10/100/1000 Ethernet, SFP) Fermi National Accelerator Laboratory (US) Katie Yurkewicz • Forschungszentrum Jülich (Germany) Markus Buescher ‘First turns’ for SuperKEKB TPS exceeds design goal of Linux OS embedded GSI Darmstadt (Germany) I Peter • • IHEP, Beijing (China) Tongzhou Xu 500 mA stored current DZero discovers new four-fl avour particle EPICS IOC included IHEP, Serpukhov (Russia) Yu Ryabov • INFN (Italy) Antonella Varaschin • Testing of DUNE tech begins Jefferson Laboratory (US) Steven Corneliussen JINR Dubna (Russia) B Starchenko KEK National Laboratory (Japan) Saeko Okada 15 S CIENCEWATCH Lawrence Berkeley Laboratory (US) Spencer Klein Los Alamos National Laboratory (US) Rajan Gupta EPICS IOC Linux OS EASY-DRIVER STROWATCH FAST-PS-1K5 Embedded NCSL (US) Ken Kingery 17 A 5 A-20 V and 10 A-20 V Digital Bipolar Nikhef (Netherlands) Robert Fleischer Up to ±100 A or ±100 V Digital Bipolar Novosibirsk Institute (Russia) S Eidelman Orsay Laboratory (France) Anne-Marie Lutz F EATURES PSI Laboratory (Switzerland) P-R Kettle Saclay Laboratory (France) Elisabeth Locci 18 LIGO: a strong belief Science and Technology Facilities Council (UK) Jane Binks SLAC National Accelerator Laboratory (US) Farnaz Khadem Twenty years of hard work with a strong belief TRIUMF Laboratory (Canada) Marcello Pavan that the endeavour would lead to a historic Produced for CERN by IOP Publishing Ltd breakthrough. IOP Publishing Ltd, Temple Circus, Temple Way, Bristol BS1 6HG, UK Tel +44 (0)117 929 7481 21 Science with a medical PET cyclotron Publisher Susan Curtis Medical PET cyclotrons can be used for multidisciplinary research. Production editor Lisa Gibson Technical illustrator Alison Tovey Group advertising manager Chris Thomas 23 ALICE selects gas electron multipliers for its new TPC BEST Advertisement production Katie Graham Marketing & Circulation Angela Gage The experiment plans a major upgrade for its TPC. Beam Stabilization Hardware and Software Suite Now also with encoder integration! Head of B2B & Marketing Jo Allen Art director Andrew Giaquinto 25 Neutrons in full fl ight at CERN’s n_TOF facility Advertising The facility features two beamlines and two experimental halls. FMC and MTCA Tel +44 (0)117 930 1026 (for UK/Europe display advertising) or +44 (0)117 930 1164 (for recruitment advertising); NTERACTIONS ROSSROADS FMC cards E-mail: [email protected]; fax +44 (0)117 930 1178 29 I & C MTCA boards New Tools for your Experiments Custom Design General distribution Courrier Adressage, CERN, 1211 Geneva 23, Switzerland E-mail: [email protected] 33 F ACES & P LACES In certain countries, to request copies or to make address changes, contact: Advanced and improved solutions for beam detection and experimental setups China Jiang Ya'ou, Library, Institute of High Energy Physics, PO Box 918, Beijing 100049, People’s Republic of China 36 R ECRUITMENT E-mail: [email protected] BLM, photodiodes, ion chambers, diamond detector readout Germany Antje Brandes, DESY, Notkestr. 85, 22607 Hamburg, Germany E-mail: [email protected] 39 B OOKSHELF Configurable full-scale range and bandwidth UK Mark Wells, Science and Technology Facilities Council, Polaris House, North Star Avenue, Swindon, Wiltshire SN2 1SZ E-mail: [email protected] 42 A RCHIVE Complete beam stabilization systems on photon detectors and encoders US/Canada Published by Cern Courier, 6N246 Willow Drive, St Charles, IL 60175, US. Periodical postage paid in St Charles, IL, US Ready-to-use software packages Fax 630 377 1569. E-mail: [email protected] POSTMASTER: send address changes to: Creative Mailing Services, PO Box 1147, Dedicated applications for machine diagnostics and protection St Charles, IL 60174, US EPICS IOC included Published by European Organization for Nuclear Research, CERN, I NTERNATIONAL J OURNAL OF H IGH -E NERGY P HYSICS 1211 Geneva 23, Switzerland CERNCOURIER Tel +41 (0) 22 767 61 11. Telefax +41 (0) 22 767 65 55 V OLUME 5 6 N UMBER 3 A PRIL 2 0 1 6 TetrAMM Printed by Warners (Midlands) plc, Bourne, Lincolnshire, UK Photon Beam Position Readout System © 2016 CERN ISSN 0304-288X EPICS IOC SOFTWARE and DRIVERS Dedicated software applications EPICS IOC A strong belief On the cover: Artwork showing how our Sun and Earth warp space and time. 80 D0 Run II, 10.4 fb–1 2 data TETRAQUARKS AWAKE fit with background shape fixed 60 background signal ACCELERATOR 40 20 N events / 8 MeV/c DZero collaboration The plasma cell is in Drivers 0 Gravitational waves are created when massive bodies accelerate through space and 10 discovers a new its fi nal position MILESTONE 0 –10 residuals (data-fit) 5.5 5.6 5.7 5.8 5.9 particle p10 Japan’s SuperKEKB 0 ± 2 m (Bs π ) (GeV/c ) p13 achieves “fi rst turns” p11 time. (Image credit: T Pyle/Caltech/MIT/LIGO Lab ) 3 www.caenels.com ESFR_Novembre_2015.indd 1 29/02/16 21:14 CERNCOURIER www. V OLUME 5 6 N UMBER 3 A PRIL 2 0 1 6 CERN Courier April 2016 Viewpoint The CERN effect Transferring innovation and knowledge so that cutting-edge research can benefi t society. By Sijbrand de Jong were welcomed by CERN, usually staying for between CERN several months and a year. The CERN summer-student Interest in CERN has evolved over the years. At its and teacher programmes, which provide short stints inception, the Organization’s founding member states of intensive education, also welcome hundreds of clearly saw the new institution’s potential as a centre of students and high-school teachers every year. excellence for basic research, a driver of innovation, a A third important contribution of CERN is the provider of fi rst-class education and a catalyst for peace. innovation that results from research that requires After several decades of business as usual, CERN is technology at levels and in areas where no one has A student from CERN’s again on the radar of its member-state governments. gone before. The best-known example of CERN Beamline for Schools This is spurred on partly by the public interest that technology is the World Wide Web, which has competition explains his has made CERN something of a household name.