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CERN Courier Contributions POTTER Keith TEC-S/EST-LEA CChn UPUIHCR International journal of high energy physics VOLUME 38 JANUARY/FEBRUARY 1998 More choice than ever before with new, simple Midi Vac. With the addition of MidiVac to our series Varian also offers the broadest range of ion pump controllers, Varian now of ion pumps available. With Diode, offers more choice and flexibility than Noble Diode, and StarCell pumping ever before. Designed to power any size elements, each Varian Vaclon Plus pump and type of ion pump, MidiVac features is optimized to pump specific gases. single- or dual-voltage outputs for simultaneous control of two ion pumps. Look to Varian for vacuum made simple. With the latest in design features, it can Whatever your pumping needs, our be interfaced with a computer. Yet, it is Vaclon pumps and controllers offer a 9001 simple and easy to operate. complete solution. For more information, REGISTERED see us at http://www.varian.com, or Now you can select just the right call us at: controller to fit your specific application whether it is the low-cost MiniVac, 1-800--8VARIAN in the U.S. the ultra-versatile MultiVac, or the new 39.11.9979111 (Italy) in Europe MidiVac. 81.3.52321253 in Japan varian® ISSN 0304-288X Advertising enquiries Europe Volume 38 No. 1 Micheline Falciola January/February Covering current developments in high energy Advertising Manager CERN 1998 physics and related fields worldwide CH-1211 Geneva 23, Switzerland Editor: Gordon Fraser Tel.: +41 (22) 767 4103 CERN.COURIER® CERN.CH Fax: +41 (22) 782 1906 Production and Advertisements: Micheline Falciola Rest of the world [email protected] Danielle Ford Advisory Board: E.J.N. Wilson (Chairman), E. Lillestol, Advertising Manager, USA M. Neubert, D. Treille; with L. Foà, International Publishers Distributor J. Ferguson 820 Town Center Drive World Wide Web http://www.cern.ch/CERN/Courier/ LANGHORNE PA 19047 Tel.: (215) 750-2642 -I US contributions to LHC Fax: (215) 750-6343 ' Major American commitment to CERN Distributed to Member State governments, institutes and laboratories affilliated with CERN, and to their personnel. Technology transfer Managing spinoff from basic research General distribution Jacques Dallemagne Around the Laboratories CERN, 1211 Geneva 23, Switzerland CHOOZ: New neutrino results In certain countries, to request copies or to Important new limits on particle oscillations make address changes contact : CERN: ISOLDE astrophysics/Hybrid photodetectors China Understanding supernovae in the laboratory/Detector Chen Huaiwei development Institute of High Energy Physics P.O. Box 918, Beijing, RHIC: More STAR physics People's Republic of China 10 Research for Brookhaven's new heavy ion collider Germany CERN: Barkas effect revisited Gabriela Heessel or Astrid Nagel 12 The range of pions in matter DESY, Notkestr. 85, 22603 Hamburg 52 3 WORKSHOP: Beam dynamics issues Italy DESY: Theory workshop Mrs. Pieri or Mrs. Montanari Quark-gluon field theory in the spotlight INFN, Casella Postale 56 13 00044 Frascati, Roma RUTHERFORD APPLETON: Kalmusfest United Kingdom 17 George Kalmus steps down Su Lockley "| Q KYOTO: Polarized protons at room temperature Rutherford Appleton Laboratory, Chilton, Didcot, Oxfordshire 0X11 0QX Physics monitor USA/Canada Photodetection Janice Voss 20 New conference surveys rapidly developing scene Creative Mailing Services P.O. Box 1147 Particle physics and the Early Universe St. Charles, Illinois 60174 24 Workshop report Tel.: 630-377-1589 / Fax: 630-377-1569 CERN COURIER is published monthly 28 Bookshelf except January and August in English and French editions. The views expressed in the Journal are not necessarily those of the 28 People and things CERN management. Printed by: Drukkerij Lannoo nv 8700 Tielt, Belgium Published by: European Laboratory for Particle Physics CERN, 1211 Geneva 23, Switzerland tel.: +41 (22)767 61 11, telex: 419 000 CERN CH, telefax: +41 (22) 767 65 55 CERN COURIER only: tel. +41 (22) 767 41 03, Cover photograph: Infrastructure of the new neutrino experiment at a telefax +41 (22) 782 19 06 recently commissioned nuclear power station near the village of Chooz (pronounced 'Shau') in the Ardennes region of France. Its results have USA: Controlled Circulation been awaited with great interest by physicists trying to explain the apparent Periodicals postage paid at St. Charles, deficit of muon neutrinos produced by cosmic ray interactions in the Illinois atmosphere (see page 5). CERN Courier, January/February 1998 III The material is organized into five Current status of development of comprehensive units. The first three are superconducting materials for magnets. available now and contain about twelve hours Interactive retrieval of properties of of instructional material. materials used in magnet construction such as JC(B,T), p(B,T), thermal Unit 1 : Introduction to Magnets and contraction data. Accelerators Magnetic design optimization using an Unit 2: Superconductors for Accelerator interactive program for computing fields Magnets and multipoles. Unit 3: Magnetic Design Methods for Accelerator Magnets Available soon: Superconducting Accelerator Magnets is an Unit 4: Electrical, Mechanical, and Cryogenic interactive multimedia tutorial on the physics Considerations for the Final Magnet Package CD-ROM for Windows 95/NT Units 1,2 and 3 only. and engineering concepts of superconducting Unit 5: Performance Characteristics and Price: $300 (U.S. funds) + shipping magnets for high energy and nuclear physics Measurement Methods charges. accelerators. Order information and examples at: www.MJB-Plus.com The tutorial content is based on research and or contact: development results of the past ten years from Among the topics included on the CD-ROM M J B Plus, Inc. the major international accelerator are: 119 Executive Way, #304 laboratories. Material is also derived from • Details of existing accelerator dipoles : DeSoto, TX 75115 USA major accelerator and magnet conference ^0 RHIC, Tevatron, SSC, HERA telephone: 972-709-5127 proceedings, publications from the institutions • Assembly and construction of Fax: 972-709-7561 involved in magnet R&D, and contributions by accelerator magnets, with video clips email: [email protected] individual engineers and scientists. and animation. lux™ measuring systems &MC I A L MEASURING SYSTEM S bility and accuracy Sometimes a good eye and a steady hand are all you need. However, for measuring currents with high accuracy and reliability you need other qualities. You need a Zero-flux™. HOLEC Power W Protection P.O. Box 4 7550 GA Hengelo 1* The Netherlands Phone: +31 74 246 28 53 Fax: +31 74 246 26 78 www.holecups.com/sms e-mail: [email protected] IV CERN Courier, January/February 1998 US contributions to the LHC n a significant international CERN's governing body, Council, and fabricating these components. agreement, signed in the 'Indian distinguished theorist Maiani, who is Some 15 percent of the physicists Treaty Room5 of the Old Executive also the President of the Italian INFN, working on the large LHC Office Building in Washington, DC, was elected CERN's next Director experiments are from the US. on 8 December, US scientists will General, to take office on 1 January Further protocols were signed by contribute a total of $531 million 1999 - see page 28.) Martha Krebs, Director of the Office towards the 27-kilometre Large Under the agreement, the United of Energy Research, US Department Hadron Collider (LHC) now under States will provide goods and of Energy, Bob Eisenstein, Assistant construction and its physics services for the LHC, scheduled to Director of Mathematical and experiments. Subsequent protocols come into operation in 2005. Physical Science of the US National were signed at the CERN Council Specifically, the Department of Science Foundation, and CERN meeting on 19 December. Energy will provide components and Director General Chris Llewellyn This is the first time that the US will materials costed at $200 million for Smith during the meetings of CERN's contribute significantly to an use in the accelerator. Three of the governing body, Council, at CERN at accelerator to be built outside the department's national laboratories, the end of December, when the US US, and it is the first agreement Brookhaven, Berkeley and Fermilab, joined the growing ranks of CERN between CERN and the US will use $110 million to design and Observer States. government. About 25 percent of the produce systems for the accelerator's US experimental high energy physics interaction regions where the community are expected to do detectors are located. The remaining LHC preparations gather momentum research at the LHC. $90 million will be used for . The agreement also underlines the procurements from US industrial Since approval by CERN Council in global nature of the physics research firms, including niobium and niobium- December 1994, LHC preparations at CERN, with the US now joining a titanium for European production of have pushed ahead steadily, and participation which includes Japan, superconducting cable, and for some some 800 million Swiss francs of Russia and Commonwealth of of the superconducting cable supply. contracts, in line with budget Independent States, Canada, China, The United States will also provide estimates, are signed or in the India and Israel as well as CERN's an in-kind contribution of process of being signed. The total 19 European Member States. components costed at $331 million to cost of the LHC is 2488 million (1997 Signing the new agreement in the massive ATLAS and CMS prices). Washington were US Secretary of detectors, with $250 million from the 1998 marks a special LHC Energy Federico Pena, US National Department of Energy and $81 milestone following the award of Science Foundation Director Neal million from the National Science three major civil engineering projects Lane, CERN Director General Chris Foundation. More than 550 US worth together 269 million Swiss Llewellyn Smith and President of scientists from nearly 60 universities francs and the commencement of CERN Council Luciano Maiani. and six national laboratories in 25 large-scale civil engineering.
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