People and things Opposing points of view amongst scientists gathered at the intergovernmental conference in Paris in December 1951 risked undermining the progress towards a European Laboratory. It was this Resolution, proposed by the Dutch delegation, which saved the day by offering something to all parties.
On people
Theoretician Julius Wess of Karls ruhe has been awarded a Leibnitz Prize and the prestigious Max Planck Medal of the German Phy
UNESCO/NS/NUC/6 (Rev. 3) sical Society. This is partly in re cognition of work on supersymme- Paris, 19 December 1951. try carried out at CERN in collabo ration with Bruno Zumino. UNITED NATIONS EDUCATIONAL, SCIENTIFIC AND CULTURAL ORGANIZATION
Another Leibnitz Prize recipient is
Conference on the organization of studies relating to Albert Walenta of Siegen for his the establishment of a European Nuclear Research Laboratory landmark contributions to the de
Baris, 17 - 21 December I95I velopment of particle detectors, especially the drift chamber. The Leibnitz prizes are awarded by the
Draft Resolution proposed by the Netherlands Dologation Deutsche Forschungsgemeinschaft to stimulate and encourage frontier The Conference recommends : research.
Setting up a Board of Representatives from the participating countries, with headquarters i-n Geneva, to supervise the programme embodied in items 1 to 5» Gerson Goldhaber of the University Acoepting the offer made by the United Kingdom representative to of California and the Lawrence use the Liverpool synchro-cyclotron for i|00 MeV protons as an instrument to be operated on a European basis. Berkeley Laboratory has been pre
3 - Accepting the offer made by the Danish representative to use the sented with an honorary doctorate Institute of Theoretical Fhysics in Copenhagen to assomble a by the University of Stockholm. study group for theoretical research on a European basis. It should provide theoretical guidance for experimental work, to be Goldhaber is currently visiting carried out with the machines. CERN, where he is collaborating h Establishing a planning group for an intermediate machine. in the UA 1 experiment at the pro 5 Establishing a planning group for a big machine. ton-antiproton Collider. 6 - Establishing a planning group for the organization of the European Laboratory for Nuclear Research. In this Laboratory, the machines should be installed and advanced studies should be carried out.
American Physical Society Awards
After being attributed the Enrico Fermi Award (together with the late Stanley Livingston) by the US Department of Energy, Ernest Cou gineering Research Council and the Italy; Volkswagen Foundation, rant of Brookhaven has been nom Social Science Research Council, Federal Republic of Germany. inated as the first recipient of the United Kingdom; LK-NES Founda new Robert R. Wilson Prize of the tion, Denmark (private industry); American Physical Society. The Netherlands Organization for the award comes in recognition of Advancement of Pure Research Courant's role in the invention of (Z.W.O.); Norwegian Research the strong focusing technique, and Council; République et Canton de for his work in beam dynamics. It Genève, Département de l'Instruc will be presented at the APS tion Publique; University of Milan, Spring Meeting.
CERN Courier, March 1987 31 GSI DARMSTADT
EXPERIMENTAL eine vom Bund und dem Land Hessen getragene HIGH ENERGY PHYSICS Grossforschungseinrichtung, die physikalische Forschung mit einem Schwerionenbeschleuniger betreibt, sucht fur die Planung, den Bau und Betrieb The Department of Physics at Indiana University invites eines supraleitenden Magnetspektrometers applications for a tenure-track faculty position in experi mental high-energy physics. The appointment is authorized at the assistant professor Diplom-lngenieur (FH) level, but the position may be upgraded to associate pro fessor for a person with outstanding accomplishments. Kz. 45.000 - 87.4 The high-energy physics group has an active program in Der Bewerber soil bei dertechnischen Koordination accelerator-based experiments at SLAC (SLC: MARK-II des Projektes mitwirken. Bevorzugt wird ein Ingé and polarized beams), Fermilab (DO and E672) and Brookhaven (search for glueballs and hybrid states). nieur der Fachrichtung Kryotechnik/Hochvakuum- To apply please send a complete vita, a description of technik, der neben soliden Kenntnissen und Erfah- research interests and accomplishments, a list of publi rung insbesondere die aktive Bereitschaft besitzt, cations and a minimum of three letters of reference to: sich in die zukunftsweisende Technik der Supralei- tung einzuarbeiten. Professor Alex Dzierba Chairperson, Die Bezahlung erfolgt nach dem Bundesangestell- Search and Screen Committee tentarifvertrag. Indiana University, Mannliche und weibliche Bewerber haben grund- Bloomington, satzlich gleiche Chancen. Schwerbehinderte erhal- IN 47405. ten bei gleicher Eignung den Vorzug. Applications should be received by April 15, 1987. Ihre Bewerbung mit den ublichen Unterlagen rich- Indiana University is an Equal Opportunity/Affirmative ten Sie bitte unter Angabe der Kennziffer an: Action Employer. Gesellschaft fur Schwerionenforschung MBH An error was made in last month's advertisement. Personalabteilung This position is not associated with the Indiana Uni Planckstrasse 1 - Postfach 110552 versity Cyclotron Facility. 6100 Darmstadt - 11
ISTITUTO NAZIONALE Dl FISICA NUCLEARE FACILITY OPERATIONS MANAGER (INFN) The Department of Physics at the University of Illinois at Urbana- Five post-doctoral fellowships Champaign has an immediate opening for a Facility Operations Manager in its Nuclear Physics Laboratory. The successful appli in theoretical nuclear cant will be responsible for managing the day-to-day operation of our 100 MeV, 10 uA, 100% duty factor electron accelerator, its associated experimental facilities, and its technical support and particle physics services. These services include an electronics shop, a machine For one year, starting November 1987, for non Italian citizens. The suc shop, and drafting facilities. cessful applicants can pursue their research at any of the following Lab Our present accelerator is a 9-pass microtron. A proposal for the oratories and Sections of INFN : construction of a new accelerator at Illinois (450 MeV, 100 uA, • National Laboratories of Frascati (Rome) 100% duty factor) is pending before the NSF. The Manager will • National Laboratories of Legnaro (Padua) have a major role in the development, construction, and opera • National Southern Laboratory (Catania) tion of this new facility. • INFN Section of Turin • INFN Section of Genoa We seek an individual with technical expertise and aptitude, • INFN Section of Milan good judgment, and good management skills. Two (2) years of • INFN Section of Pavia experience in management at a large-scale accelerator or similar • INFN Section of Padua highly technical facility is highly desirable. Minimum qualifica • INFN Section of Trieste tions include an undergraduate degree in engineering or physical • INFN Section of Bologna science. This is a full-time position on the UIUC academic pro • INFN Section of Florence fessional staff. Salary will be competitive, depending on training • INFN Section of Pisa • INFN Section of Rome and experience. The starting date is Spring of 1987. For full • INFN Section of Naples consideration, applications should be received by April 1, 1987. • INFN Section of Bari Interviews may take place prior to the applications deadline ; no • INFN Section of Catania final decision, however, will be made until after that date. • INFN Section of Sanità (Rome) For technical information, contact Prof. Robert A. Eisenstein, The annual gross salary will be 24.000.000 italian lire, corresponding to Nuclear Physics Laboratory, University of Illinois at Urbana- 1.600.000 net italian lire each month, plus travel expenses from home Champaign, 23 Stadium Drive, Champaign, Illinois 61820. Tele institution to Laboratory or INFN Section and return. phone # 217/333-3190. The application deadline is March 31, 1987. Applicants should submit a curriculum vitae, including a list of publica To apply, please send resumes and the names of three refer tions and three letters of reference. ences to: Mr. Raymond F. Borelli (NFOM). Send applications and requests for further information to : Department of Physics, University of Illinois at Urbana-Champaign, Prof. Nicola CABIBBO, 1110 West Green Street, President National Institute Urbana, Illinois 61801. of Nuclear Physics (INFN) Telephone #217/ 333-0570. Casella Postale, 56 The University of Illinois is an Affirmative Action / Equal Oppor 00044 FRASCATI (Roma) ITALY. tunity Employer.
32 CERN Courier, March 1987 T. D. Lee - 'Happiness is when old friends come from far away'.
(Photo M. Jacob)
Bernard Frois of the Centre d'Etudes Nucléaires de Saclay and Ingo Sick of Basle have been named recipients of the 1987 Tom W. Bonner Prize Tor their elegant studies of nuclei using high energy electron scattering. In particular, their precision measurements of nuclear charge and current densi ties have offered novel perspec tives on ground states and valence orbitals. Their studies of few-nu- cleon systems have demonstrated the need for subnucleon degrees of freedom in a complete descrip tion of the nucleus. This body of work has provided firm bench marks against which to test our understanding of the nuclear many- body problem. '
R. Baxter of the Australian National University has been named reci pient of the 1987 Dannie Heineman summer Protvino workshops al Prize for Mathematical Physics Tor T. D. Lee Symposium ways attract participants not only his novel use of mathematical ana from Soviet institutions but also lysis to solve in exact analytical A symposium to celebrate the six from abroad. form problems of fundamental tieth birthday of T. D. Lee and to This time the Workshop started importance in statistical mechanics commemorate the thirtieth anni with the superstring theories (Bon- relating directly to cooperative versary of the discovery of parity ora, Perelomov, Pron'ko, Isaev et phenomena, phase transitions and (left-right symmetry) nonconserva- al.), then proceeded through clas quantum field theory. ' tion was held at Columbia in No sical (Logunov et al.) and quantum gravity cosmological aspects of John lliopoulos of Ecole Normale vember. A distinguished lineup of the field theory (Abbott, Tkachev Supérieure and Luciano Maiani of speakers and chairpersons re et al.), theory and phenomenology Rome have been named recipients flected T. D. Lee's physics inter of supersymmetry (Volkov, Zino- of the 1987 J. J. Sakurai Prize Tor ests and background. His own viev et ai), composite models (Pi- their work on the weak interactions speech was poignantly entitled rogov, Farhi, Andrianov et al.) and of charmed particles, a crucial step Happiness is when old friends finished with numerous discussions in the development of the modern come from far away'. in soft and hard quantum chromo- theory of the fundamental interac dynamics, including nuclear as tions. ' Protvino workshop pects and quark-gluon plasma (Ar- Louise Dolan of Rockefeller Univer buzov, Matveev, Petrov, McLerran, sity has been named recipient of Last year's traditional annual sum Levin, Smirnov et al.). In total more the 1987 Maria Goeppert-Mayer mer Workshop on High Energy than 50 talks were presented. Award Tor her work on the theory Physics and Field Theory was held Future Protvino summer meet of elementary particles, particularly in Protvino near Serpukhov, USSR, ings hope to retain the fortunate for the identification and study of under the sponsorship of the Insti combination of theoretical ideas Kac-Moody algebras and their ap tute for High Energy Physics. and front line phenomenology. plications to Yang-Mills fields and The wide range of items and relativistic string theory. ' highly informal atmosphere at the (From V. A. Petrov)
CERN Courier, March 1987 33 UNIVERSITY OF OXFORD teCroy Department of Nuclear Physics Appointment We are a division of a multinational Company, a world of Research Officer wide leader in state of the art electronic instrumentation for physics, chemistry and industrial laboratory applica and Postdoctoral tion. Our Company, established in Geneva since 1972, is spe Research Associates cialized in designing, manufacturing and marketing very Applications are invited for the above posts from experimental high performance digital oscilloscopes. physicists who hold a Ph D degree. The research programme of the Department includes: For the liaison between Operations and Research & De • Experiments at the Nuclear Structure Facility, Daresbury velopment, we seek an • Determination of neutrino mass using tritium beta-decay • Solar neutrino detection • Proton decay (Soudan II) EPFL / EPFZ ENGINEER • Preparation for the DELPHI experiment at LEP (CERN) and the ZEUS experiment at HERA (DESY) OR PHYSICIST • Development of cryogenic detectors for dark matter searches • Excellent knowledge of high speed analog & digital • Development of precision proton microprobe and applications in material sciences, medicine, earth and biological sciences techniques The appointments will be for three years in the first instance, and • Experience in an industrial operation environment salary will be on the University Lecturer scale for the Research Officer (£8,020 to £16,760) and the Research Support Grade 1 A scale (£8,020 to £12,780) for the Research Associates. For our Research & Development Department, we Both scales are currently under review, and starting salaries will be according to age and experience. seek a Applications with a Curriculum Vitae, statement of research interests and the names and addresses of two referees should SENIOR MICROWAVE be sent to : Mr. A. Jones, ANALOG DESIGNER General Administrator, Department of Nuclear Physics, Keble Road, • EPFL/EPFZ or equivalent, 5 to 8 years of design expe Oxford 0X1 3RH rience in very high frequency analog design by 28 March 1987. • Interest in hybrid/monolithic implementation
For our Research & Development Department, we Continuous Electron Beam seek a Accelerator Facility ACCELERATOR SCIENTISTS PACKAGING ENGINEER
Located in Newport News, Virginia, the CONTINUOUS ELEC • ETS or equivalent in mechanical engineering TRON BEAM ACCELERATOR FACILITY (CEBAF) is building a 4 GeV high intensity, continuous beam electron accelerator for • Several years of experience in the design of instrument enclosures nuclear physics research. This machine will be a 4-pass recirculating electron linac utilizing superconducting RF technology and will provide a beam of exceptionally low For our E.D.P. Department we seek a emittance and energy spread. Acceleration will be provided by 418 five-cell, 1.5 GHz superconducting cavities, each fed with < 5 kW average RF power. The Accelerator Physics Division HARDWARE SPECIALIST of CEBAF has staff positions at various levels for accelerator scientists with expertise in the following: with
• accelerator operations • an experience with DEC equipment • magnet design (VAX 11-750/785) • injector design • a background in international network systems • transport optics and beam dynamics • RF and feedback If you are willing to accept a new challenge and believe • instrumentation and control that you could qualify for the above-mentioned position, • collective effects please send us your complete application to the attention • E&M calculations and cavity design of "Personnel Department". • computer simulation
Interested applicants should submit a curriculum vitae, list of publications and three professional references to: LeCroy S.A. Personnel Director CEBAF 101, route du Nant-d'Avril 12070 Jefferson Avenue 1217 Meyrin 1 Newport News, VA 23606 Phone: 022/82 33 55 CEBAF is proud to be an Equal Opportunity Employer.
34 CERN Courier, March 1987 18-year old Janne Wallenius wins the 48 000 Swedish kronor (about 12 000 Swiss francs) jackpot in the Swedish TV programme 'Quits or Doubles' answering questions on particle physics.
(Photo Pressens Bild AB)
Saturday night Janne had to negotiate a tricky sequence of questions, compiled Meetings physics fever by Sverker Fredriksson of Stock holm 's Royal Institute of Technol Towards the end of last year, over ogy, concluding with a six-part The 1987 International Cryogenic four million Swedes sat glued to grilling on the discovery of the W Materials Conference and Cryo their TV sets four Saturday nights and Z carriers of the weak nuclear genic Engineering Conference will in a row to follow the progress of force (not yet in most of the text be held from 14-18 June at St. 18-year old Janne Wallenius who books). Charles, Illinois, hosted by nearby eventually walked off with the Janne's performance and the Fermilab. The seventh joint meet 48 000 Swedish kronor (about courage of Swedish TV in taking ing of its kind, it is a multidiscipli- 12 000 Swiss francs) jackpot in up such a 'difficult' topic were nary event with contributions from 'Quits or Doubles', the nation's widely applauded in both the press materials scientists, metallurgists, most popular TV series, after and in the universities. In addition physicists and engineers. Further bravely battling with questions on to the cash came invitations to information from W.B. Fowler, particle physics. visit CERN and other major world Fermi National Accelerator Labo On his way to the big money Laboratories. ratory, PO Box 500, MS 347, Ba tavia IL 60510, USA.
CERN Courier, March 1987 35 UNIVERSITY UNIVERSITY OF TORONTO OF
GENEVA The Department of Physics plans to make The Department of Nuclear and Particle Physics has several tenure-stream an opening for a position of appointments
RESEARCH ASSOCIATE in the next few years, of which at least one will be in (maître-assistant) Experimental High Energy Physics. In anticipation, the Department invites applications to join a group participating in the L3 experiment at for this position from qualified candidates for NSERC University Research Fellowships, which LEP. The candidate must have a Ph. D. or equiva could begin July 1, 1988. NSERC University Re lent experience in high energy physics. search Fellows must be Canadian citizens or per manent residents. Fellows carry out research, su This is a non permanent position limited to a maxi pervise graduate students and have teaching loads mum of 6 years. comparable to starting assistant professors. Successful candidates may in special circumstan ces be considered directly for a tenure-stream posi Applications should be sent before April 15 to: tion as assistant professors. Applications, consisting of a CV, list of publica Prof. E. Heer, Director tions, summary of research interests, a detailed of Département de physique research proposal, and the names of three (3) refe nucléaire et corpusculaire rees should be sent before June 1,1987 to: 24, quai Ernest-Ansermet Professor R.E. Azuma CH-1211 Geneva 4 Chairman, Department of Physics Switzerland University of Toronto Toronto, Ontario, Canada M5S 1A7.
CONTINUOUS ELECTRON BEAM Advertisements in CERN COURIER ACCELERATOR FACILITY Format A4 Monthly publication Newport News, Virginia All advertisements are published in both English and French editions. Second language versions accepted without extra SUPERCONDUCTING charge.
RF TECHNOLOGY Cost per insertion (Swiss Francs) Space Actual size (mm) The Continuous Electron Beam Accelerator Facility (CEBAF) is (page) width by height 10 building a superconducting 4-GeV, high-intensity, continuous insertion insertions insertions beam electron accelerator for nuclear physics research. This four-pass recirculating linac, the largest-scale application to date 185x265 1950 1870 1800 1700 of superconducting rf technology, will produce a beam of 185x130 1150 1080 1020 940 exceptionally low emittance and energy spread. Acceleration 90x265 will be provided by 418 five-cell, 1.5-GHz superconducting cavi 90x130 680 620 580 540 ties, each fed with < 5 kW average rf power. The Superconducting RF Technology division of CEBAF will also be engaging in an active research and development pro These prices include no entitlement to special placing. gram to advance the state of the art. Supplement for: The Superconducting RF Technology division has staff posi — one additional colour 1500 SwF tions for scientists, technical associates, and engineers with — Covers: expertise in the following: Covers 2 and 3 (one colour) 2000 SwF • SRF technology Cover 4 (one colour) 2500 SwF • superconducting cavities and cryostats- i.e. design, Publication date 1 st of month of cover date: development, operation, and maintenance Closing date for • recirculating electron linear acceleration positive films and copy 1 st of month preceding cover date • quality assurance The cost of making films and of • designing electrical, electronic, computer, mechanical, translation for advertisements are vacuum, cryogenic, chemical, RF, and/or other new charged in addition. equipment Screen (offset) 60 or 54 Swiss (1 50 English) Applicants should submit a curriculum vitae, three professio Advertisements cancelled after 1 st nal references, and a five year salary history to: of month preceding cover date will Joyce Donald be invoiced. Employment Manager These rates are effective for the year 1987. CEBAF 12070 Jefferson Avenue Newport News, VA 23606 All enquiries to: Newport News is in southeastern Virginia near Williamsburg Micheline FALCIOLA / CERN COURIER - CERN and located on the Chesapeake Bay. CH-1211 Geneva 23 Switzerland CEBAF is proud to be an equal opportunity employer. Tel. (022) 83 41 03 Telex 2 36 98
36 CERN Courier, March 1987 X-ray microprobe
A resolution of better than 10 microns, with a high enough intensity to measure trace concentrations of atomic elements, has been obtained using a new X-ray microprobe designed at Ber keley. In tests at Brookhaven the A Topical Seminal on Heavy Fla be held from 11-15 May in San new microprobe measured vours will be held in San Miniato, Francisco, preceded by a short the concentration and spatial Tuscany, from 25-29 May, follow course on Laboratory Network distribution of many elements ing a successful meeting on Tew Systems. The Conference pro quickly and simultaneously and Many Quark Systems' held gramme concentrates on laborato in a sample area of less than there two years ago. Further infor ry experimental systems. Further 100 square microns. An even mation from Topical Seminar Se information from Dennis W. higher resolution appears cretary, Dipartimento di Fisica, O'Brien, Electronics Engineering possible in the near future. Université di Bologna, Via Irnerio Department, Lawrence Livermore In a 300 second counting 46, 40126 Bologna, Italy. National Laboratory, PO Box 5504, time, picogram quantities of Livermore, CA 94550, USA. elements from potassium to An international conference mark zinc were measured. ing the 40th anniversary of the Working at Brookhaven's discovery of the pion is being held National Synchrotron Light in Bristol, UK, from 22-24 July. Proca Jubilee Source, the research team Further information from B. Foster, obtained a 10 micron by 10 University of Bristol, H. H. Wills micron focal spot of 10 keV Physics Laboratory, Royal Fort, A special symposium at the Uni X-rays, with an intensity of Tyndall Avenue, Bristol, BS8 1TL, versity of Timisoara, Roumania, in 100 million photons per se UK. November marked the 50th anni cond. The beam was focused versary of the landmark contribu by a pair of multilayer-coated The fifth Conference on Real-Time tions to the physics of vector fields mirrors and the characteristic Computer Applications in Nuclear, by the Roumanian theoretician spectral lines from elements Particle and Plasma Physics will Alexandru Proca (1897-1955). At in the sample were recorded the meeting, prominent physicists by a lithium-drifted silicon from Timisoara, Bucharest, Brasov detector. The Birth and Jassy described Proca's work of Particle Physics and its implications for modern The mirrors to focus the field theory. X-rays consist of standard fused-silica mirrors with alter In May 1980, an International nate layers of sputtered Symposium on the History tungsten and carbon. of Particle Physics held at Unlike electron micro- Fermilab traced the evolution New award probes, the new probe does of elementary particle physics not require that samples be from cosmic ray and nuclear The Computer Applications in Nu placed in a vacuum. Conse physics during the years clear and Plasma Sciences Techni quently it permits a wider 1930-50, and the parallel cal Committee of the Nuclear and variety of samples, including development of relativistic Plasma Physics Society, US Insti living biological specimens, quantum field theory which tute of Electrical and Electronics to be studied. underpins its interpretation. Engineers, has set up a new indi So far it has been used in This material has been care vidual award 'for outstanding pro a medical study to reveal the fully and imaginatively edited fessional contributions to the pro distribution of toxic concen into a book 'The Birth of Par fession of using computers in nu- trations of trace elements in ticle Physics' by the organ , clear and/or plasma scientific re biological tissue, and to lo izers of the Symposium, Lau search', regardless of nationality. cate internal cracks and flaws rie M. Brown of Northwestern Those interested in making a nom in ceramics. An experiment and Lillian Hoddeson of Urba- ination can get further information using the new microprobe na-Champaign and Fermilab. from Dr. Lester Welch, Argonne to reveal the geological his It is published by Cambridge National Laboratory, Physics Divi tory of rocks is scheduled to University Press. sion 203/G-125, Argonne, Illinois get under way soon. 60439-4843 USA.
CERN Courier, March 1987 37 A spectacular illustrated journey into the subatomic world f (UJÊKfl) THE PARTICLE EXPLOSION
byFrank Close • Michael Marten and Christine Sutton E •The first major illustrated book on o particle physics u • A unique collection of pictures, both historical and from the latest experiments •A collaboration of distinguished authors • Lengthy captions provide a detailed historical account of the course of experimental particle physics • Comprehensible to the general reader-no mathematics is used
The Particle Explosion is a lavishly illustrated guide to the subatomic world discovered by physicists during the last hundred years. In lucid, straightforward language, the authors describe the fundamental discoveries and the developments in Manufacturing Line equipment which have led to our current - Cryogenic Valves understanding of the nature of matter in the Universe and the forces which govern its behaviour. - Bellows seal Valves And they give detailed, non-technical 'portraits' of - Cryogenic Transferline all the major subatomic particles, from the electron, Couplings proton, and neutron, through to quarks. - Cryostats and Ejectors The book contains almost 300 photographs of the - Tailor made Cryogenic leading personalities in the field, the increasingly Components vast and complex machines they use, and the striking images of tracks produced by the particles themselves. It is the first book to bring together, and to present in the style they deserve, the classic images of particle tracks produced with cloud chambers, photographic emulsions, bubble chambers, and modern electronic detectors. 0 19 851965 6, 240 pages, Over 300 line, halftone, and colour illustrations January 1987 £15 Cryogenic Control Valve pneum. operated with electro-pneumatic positioner and limit switches
WEKA Ltd. Hofstrasse 8, CH-8620 Wetzikon, Switzerland OXFORD UNIVERSITY PRESS Phone 01/932 23 02, Telex 875 744 Fax 01/932 43 03
38 CERN Courier, March 1987 Electronic Mail
The CERN Courier editorial desk can be contacted through electronic mail using One of the illustrations from 'The Particle the EARN/BITNET communi Explosion' — an event from the UA1 cations network. The Editor's detector at CERN's proton-antiproton Collider, showing the decay of a Z° into address is two electrons (yellow tracks). GFR. DB@GEN. BITNET (P. Lofez, CERN)
Stanford Collider gets ready
At the end of January, electrons were accelerated in the two mile Stanford linear accelerator to 50 GeV, the energy required for the Stanford Linear Collider (SLC) project. This was achieved with some 24 of the 30 accelerator sectors equipped with new high power klystrons; the rest of the sectors were still operating with 'old' klys The Particle Explosion trons. The remaining sectors will soon be converted to the new tubes, and there should be little Many people, even some of In January, Oxford University difficulty in producing Zs (mass those involved in the field, think Press published The Particle 93 GeV) in electron-positron colli that particle physics is a difficult Explosion', a highly illustrated sions at the SLC. The plan is now subject that delves into an in account of the development of to run the big linac routinely at visible subatomic world, where particle physics, from the work 47 GeV. Running at 43 GeV, the quantum theory rules and cher of Thomson and Rutherford in linac produced single bunches of ished notions from everyday the late 19th century, to the 1.5 x 1010 electrons whose behav experience no longer hold. Some present day. It is written by iour conformed with design values. 'popularizers' of the subject theoretician and popular lecturer Beam has been transmitted from even seem to encourage the and broadcaster Frank Close- the end of the linac through the idea that particle physicists are Christine Sutton, well known north arc of the collider as far as somehow losing touch with for her physics writing, especial the reverse bend section (1A of reality. Yet anyone who works ly in New Scientist; and Michael north arc) with total transmission. at CERN, or any of the other Marten who runs the Science The north (electron) damping labs, knows that particle physics Photo Library in London. ring is in routine operation and the is immensely practical. It in The book contains almost south ring is being prepared for volves large experiments in 300 photographs, many in co positrons. Positron production has which physicists go to great lour, of the leading personalities been measured and the beam sent lengths to study the reality of in the field, the machines and back to the linac, and accelerated particle physics. A recently pub apparatus they use, and many in sector 1. lished book attempts to bring specially prepared images of this reality to a wider audience. particle tracks.
CERN Courier, March 1987 39