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People and Things People and things such a Subtle effect as the disap­ provide a good surface-to-volume LEP authorization ratio, and then selectively to observe pearance of bag boundaries. Correla­ the surface. Weakly interacting tion measurements may be required, The project to build a large elec­ probes are called for. Most of our such as searches for changes in the tron-positron storage ring, LEP, at considerations must then deal with small mass lepton pair spectra, or in CERN already had the backing of photons, or virtual photons ob­ the identical particle interference the twelve CERN Member States served as lepton pairs. measurements. (see December 1981 issue, page The emitted photons and leptons, Since we have only rough esti­ 439), but threç votes remained for example, could be used in an mates of the transition temperature, subject to conditions. At a CERN attempt to observe the phase transi­ only rather crude notions of 'temper­ Council meeting in December this tion. The energy of the nuclei is var­ ature' in collisions, and as yet no 'ad referendum' was lifted by the ied, and the temperature indicated by direct data relevant to the tempera­ Netherlands, Norway and Sweden. the transverse momentum and mass ture inside nuclear collisions, we can­ The LEP project thus has the un­ distribution is determined. The rate not say anything precise about the conditional support of all Member of photon emission is then deter­ energies necessary to produce tem­ States. mined as a function of temperature. peratures above the critical tempera­ Meanwhile the LEP project team As the transition temperature is ture. It seems clear that the energies has continued to work on the op­ passed, the character of the particles investigated at Berkeley and Dubna, timization of the designs for the producing the radiation changes, and a few GeV per nucléon, are not suffi­ machine components and of the one would expect a change in the cient and the further investigation of location of the underground LEP number of the photons produced, or these phenomena must await the ring itself. A new location is to be in the slope of the photon production availability of much higher energy nu­ proposed to the Host States versus temperature. clear collisions. (France and Switzerland) which It may be too naïve to suppose that reduces the length of ring under spectral measurements will show the Jura mountains. It is also plan­ ned to tilt the plane of the ring. More information soon. Also at its December session, Workshop the CERN Council elected Sir Alec A Workshop on Quark Matter Merrison as its President, in suc­ Formation and Heavy Ion Colli­ cession to Jean Teillac. V. Telegdi sions is being held from 10-14 and K. O. Nielsen were re-elected May at the University of Biele­ as Chairmen of the Scientific Policy feld, Federal Republic of Ger­ Committee and Finance Committee many. Its aim is to study both respectively. K. Tittel was ap­ theoretical aspects of the for­ pointed a new member of the SPC. mation of a quark-gluon plas­ At CERN, Roy Billinge was ap­ ma in heavy ion collisions and pointed as Leader of Proton Syn­ the experimental problems ar­ chrotron Division and Maurice Ja­ ising in its detection. The meet­ cob as prospective Leader of The­ ing will consist of a four-day ory Division. Tributes were paid session for about 80 partici­ to Gordon Munday (Proton Synch­ pants, followed by a general rotron), Constant Tièche (Finance), session on 14 May open to and Gunther Ullmann (Personnel) anyone interested. For further for their exceptional contributions information, contact H. Satz, to the work of CERN during their Department of Physics, Univer­ many years as Division Leaders. sity of Bielefeld, D-48 Bielefeld, Federal Republic of Germany. Warm tributes were paid to Jean Teillac at the December session of CERN Council. Professor Teillac had served as President of Council for almost four years. 20 CERN Courier, January/February 1982 A symposium was held at the Massachusetts Institute of Technology on 16 October to mark the 60th birthday of Francis Low (centre), seen here with Val Fitch (left) and Marvin Goidberger. (Photo M.l.T.) On People Ettore Fiorini of the University of Milan has been awarded the Feltri- nelli Prize for Physics by the Aca- demia Nazionale del Lincei. The award was in recognition of his experimental work in particle phy­ sics, much of which has been car­ ried out at CERN. He was the lead­ er of the Milan group in the Garga- melle collaboration during the series of neutrino experiments which included the discovery of weak neutral currents. Using count­ ers, he obtained important results on parity violation in nuclei and, in a series of experiments carried out deep underground, on double beta decay. Ettore Fiorini is spokesman for the new experiment on nucléon decay being mounted in the Mont Blanc Tunnel by a CERN/Frascati/ Milano/Torino collaboration (see page 7). périment which measured parity Staehelin, told some nice stories 70th birthday of Willibald violation due to neutral currents. about the start of DESY. Hans-Otto Jentschke Second speaker was Erwin Boden- Wuster, well known at CERN and stedt, Jentschke's first assistant now leader of the European JET Over 200 pupils, ex-collaborators in Hamburg, who spoke on nuclear project in England, and also a col­ and friends of Willibald Jentschke magnetic moments, a subject well league of Jentschke during early met at DESY on 8 December to known to Jentschke due to his years of the DESY Synchrotron, celebrate his 70th birthday. Two early nuclear physics activities in amused the guests with Jentschke scientific lectures, organized by Austria before 1945. anecdotes. Original manuscripts, the University of Hamburg and Afterwards, at a dinner at DESY, about 25 years old, were shown DESY were held in the afternoon. the Dean of the Physics Faculty of (as transparencies) by Gerhard First speaker was Dieter Haidt, the University of Hamburg, Peter Soehngen, one of Jentschke's clo- talking on neutral currents in weak interactions. He covered the dis­ covery of neutral currents made at CERN during Jentschke's direc­ torship and Jentschke's participa­ tion in the SLAC polarization ex- At an event held at DESY to mark his 70th birthday, Willibald Jentschke (left) chats with CERN Director General and former DESY Director Herwig Schopper (centre) and present DESY Director Volker Soergel (right). (Photo DESY) CERN Courier, January/February 1982 21 sest collaborators at DESY. voted himself to general relativity, Rochester. The anticipated main Herwig Schopper presented where he tried to find a formalism program of lectures is : C. Baltay, Jentschke with one of the win­ free of singularities. His book on Columbia University - Neutrino dows used to illuminate the Gar- general relativity has been trans­ Interactions; J.D. Bjorken, Fermilab gamelle bubble chamber, as a gift lated into many languages and is - Accelerators and Storage Rings; from CERN. one of the standard works of mod­ N. Cabibbo, University of Rome — ern physical theory. At various Particle Physics in the 1980s; F. Christian Môller times he served as Director of Nor- James, CERN - Probability, Statis­ dita, as a member of CERN's Scien­ tics and Associated Computational The 14 January marked the second tific Policy Committee and as Se­ Techniques; C. Llewellyn Smith, anniversary of the death of Danish cretary of the Royal Danish Scien­ Oxford University - Grand Unified theoretician Christian Môller. After tific Society. Theories; F. Sauli, CERN - New studying under Niels Bohr, he went Developments in Track Chambers; + on to investigate the theory of the Conferences P. Sôding, DESY - e e~ Interac­ interaction between two relativistic tions. electrons, well before the present­ The fifth International Symposium Anyone interested in attending ly-accepted methods of quantum on High Energy Spin Physics will should apply as soon as possible electrodynamics had been esta­ be held at Brookhaven National and request a reference letter from blished. The outcome of this work Laboratory from 16-22 September. a senior colleague to be mailed to: was the formula for the scattering As well as covering spin experi­ T. Ferbel, Fermilab, Mail Station process which bears his name. ment and theory, this meeting will 888, P.O. Box 500, Batavia, Illinois Subsequently he played an import­ also cover techniques for polarized 60510. ant role in the development of both beams and targets. Further infor­ Deadline for applications is nuclear theory and quantum elec­ mation from the Symposium Secre­ March 15. trodynamics. Above all, he de­ tary, Mrs. A. Bell, Bldg 911B, Brookhaven National Laboratory, Upton, New York 11973, USA. The Seventh International Confer­ The traditional SLAC Summer Insti­ ence on Experimental Meson Spec­ tute on Particle Physics will be held troscopy will be held at Brookhav­ this year from 16-27 August. en National Laboratory, 14-16 April Further information from Anne 1983. The conference will cover Mosher, Bin 62, SLAC, PO Box experimental results in light and 4349, Stanford, California 94305, heavy quark spectroscopy, relevant USA. theory and spectrometer systems. Contact S.-U. Chung and S.J. Lin- An Advanced Study Institute on denbaum, Co-Chairmen, Organizing Techniques and Concepts of High Committee, Brookhaven National Energy Physics will be held July Laboratory, Upton, New York, 1-12 in Lake George, NY (the Adi­ 11973. rondack Mountains of New York State). This is the second in the series of Institutes started at St. Croix in 1980. It is sponsored by International Commission on NATO Advanced Study Institutes Particles and Fields Program, United States Department of Energy, National Science Foun­ New members of the IUPAP Inter­ dation, Fermi National Accelerator national Commission on Particles Laboratory, and the University of • and Fields have been elected.
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