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Home , James Bjorken, Michel Della Negra, Peter Jenni, Raymond Stora, Sally Dawson, Tejinder Virdee

CERN Courier December 2016 Faces & Places Mineral Insulated Cable

We were among the ﬁ rst pioneering companies to manufacture MI cable for improved performance and reliability. Standard insulation materials include MgO, Al2O3, and SiO2 with a W a r D s high purity for applications such as nuclear and elevated temperature as standard. Cables are manufactured to all International Standards such as IEC, ATSM, JIS and BS. APS announces 2017 prize recipients • Flexible - bend radius of 6 x outer diameter. • Pressure tight vacuum seal. • Operating temperature of -269℃ to 1,260℃. • Welded and hermetically sealed connections. • Sheath diameter from 0.08mm to 26mm. • Capable of operating in the following atmospheres - oxidising, reducing, neutral and vacuum. • RF Coaxial, Triaxal cables, Multiconductor Transmission Top: Michel Della Negra, Peter Jenni and Tejinder Virdee (Panofsky Prize); James cables for power, control and instrumentation. Bjorken, Sekazi Mtingwa and Anton Piwinski (Wilson Prize). Bottom: Sally Dawson, Howard Haber, John Gunion and Gordon Kane (J J Sakurai Prize).

The American Physical Society (APS) has instrumental contributions to the theory of problems in nuclear-structure physics, awarded its prizes for 2017, several of which the properties, reactions and signatures of cold-atom physics, and dense-matter Temperature is our business Cables | Temp Measurement | Electric Heaters are devoted to the fi elds of high-energy and the Higgs boson. theory of relevance to neutron stars”. The nuclear physics. The W K H Panofsky Prize Recognising achievements in the Tom W Bonner Prize in Nuclear Physics, www.okazaki-mfg.com in Experimental Particle Physics went to physics of particle accelerators, this year’s meanwhile, was awarded to Charles Michel Della Negra and Peter Jenni, CERN, Robert R Wilson Prize was awarded to Perdrisat of the College of William and and Tejinder Virdee, Imperial College James Bjorken, SLAC, Sekazi Mtingwa, Mary, “for groundbreaking measurements okazaki-cernad-193x125-Oct16-Synchrotron.indd 1 31/10/2016 15:46 London, for their “distinguished leadership Massachusetts Institute of Technology, and of nucleon structure, and discovering the in the conception, design and construction Anton Piwinski, DESY, “for the detailed, unexpected behaviour of the magnetic and of the ATLAS and CMS detectors, which theoretical description of intrabeam electric nucleon form factors with changing were instrumental in the discovery of the scattering, which has empowered major momentum transfer”. Higgs boson”. The award recognises and discoveries in a broad range of disciplines by a Completing the prize tally in the Progress of encourages outstanding achievements in wide variety of accelerators, including hadron high-energy physics arena, the Dannie experimental particle physics. colliders, damping rings/linear colliders, and Heineman Prize for Mathematical Physics Theoretical and The J J Sakurai Prize for Theoretical low emittance synchrotron light sources”. went to Carl Bender of Washington Particle Physics went to Sally Dawson of In the nuclear-physics domain, the APS University, for developing the theory of Brookhaven National Laboratory, John Herman Feshbach Prize in Theoretical PT symmetry in quantum systems and Experimental Physics Gunion of the University of California at Nuclear Physics went to Joseph Carlson sustained seminal contributions that have Davis, Howard Haber of the University of of Los Alamos National Laboratory, “for generated profound and creative new 5 reasons to submit: California at Santa Cruz, and Gordon Kane pioneering the development of quantum mathematics and impacted broad areas of of the University of Michigan, for their Monte Carlo techniques to solve key experimental physics. 1. Fully open access journal a n n i V E r s a r Y 2. Fast peer-review: 28 days from submission to first Members of decision, 57 days from submission to acceptance* Marking 15 years UNOSAT work on satellite 3. Extensive financial support for authors of humanitarian M Brice/CERN images of Haiti 3 in October to 4. SCOAP partner journal mapping assess the damage of 5. Read in 129 countries On 11 October, a United Nations programme Hurricane called UNOSAT, which delivers satellite Matthew. ptep.oxfordjournals.org images to regions affected by natural disaster or conﬂ ict, celebrated 15 years of success in high as 30 cm. Raw satellite images made required in West Africa since 2014 in the fi ght helping relief and development organisations. available by space agencies and public and against the Ebola epidemic, or currently in UNOSAT has been hosted by CERN’s IT private satellite data providers are stored the context of the Syrian conﬂ ict. “CERN’s department since its inception in 2001, and on CERN’s servers and then transformed support is essential,” says UNOSAT manager relies on the laboratory’s IT infrastructure – in into legible, downloadable maps. The tool Einar Bjorgo. “Without its powerful IT particular, the Worldwide LHC Computing has become essential for arranging aid and infrastructure, we wouldn’t be able to compile *Median, Sep 2012 – Sep 2016 Grid – to produce maps with a resolution as sustainable reconstruction such as that the satellite data we receive to make it usable.”

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E X h i B i t i O n C O n F E r E n C E s CERN science on LHC sheds light on extreme cosmic rays display in Vienna The 19th International Symposium on Very CERN, are expected to help to resolve these High Energy Cosmic Ray Interactions muon puzzles. On 19 October, a new exhibition about (ISVHECRI) took place on 22–27 August The high-energy neutrinos measured particle physics and cosmology, produced in Moscow, Russia, attracting more than by IceCube continue to be a focus of in collaboration with the Institute of High 100 physicists. At the core of discussions this community. Neutrinos produced in Energy Physics of the Austrian Academy was the status of our understanding of interactions of cosmic rays in the atmosphere of Sciences, opened at the Natural History hadronic particle production as observed in constitute the dominant background to those Museum of Vienna. Called “The beginning interactions involving cosmic rays, and as Participants of ISVHECRI ’16 discussed the from astrophysical sources. Fortunately, of everything”, it promises to take visitors measured in accelerator experiments. implications of LHC data. the LHC probes the energy region that PT2026 NMR Precision Teslameter on a journey more than 13 billion years The impact of LHC measurements is most important for understanding this into the past, and to communicate the most on the interpretation of cosmic-ray data simulations, an excess in high-multiplicity background, which stems mainly from the recent scientifi c knowledge of particle was a central theme. Important general muon bundles previously reported by several production and decay of charm particles. Reach new heights physics and cosmology from different observations of direct relevance to LEP experiments has not been confi rmed. Although the good overall agreement of the visual, optical and acoustic angles and cosmic-ray physics include: the moderate Still, the muonic component of air showers charm measurements with predictions is perspectives. Part of the exhibition is growth of the inelastic cross-section is a source of many puzzles. For example, very encouraging, it was reported that the in magnetic eld devoted to CERN, and the exhibition will and secondary particle multiplicity; the the Auger collaboration reported that the LHC measurements cover only about 12% run until 1 May 2017. absence of rapid changes of the particle measured muon number in air showers of the phase space needed for calculating distributions close to the beamline; with energies of 1019 eV exceeds the model PeV-energy neutrino ﬂ uxes. measurement (Top left) CMS featured at the exhibition. and the overall agreement between expectations. In addition, the high-statistics ISVHECRI participants were also charm-particle production and perturbative data on muon and electron numbers recorded reminded of the early pioneering work on The Metrolab PT2026 sets a new a n n i V E r s a r Y QCD calculations. Thanks to LHC data, by the KASCADE air-shower array can particle physics using cosmic-ray interactions standard for precision magnetometers. the ambiguity in the interpretation of still not be consistently interpreted with recorded with emulsion chambers, which Leveraging 30 years of expertise building YITP celebrates air-shower data of ultra-high-energy cosmic contemporary interaction models – even still harbour phenomena that are yet to be rays has been signifi cantly reduced and a after accounting for LHC data, which are understood. The symposium concluded the world’s gold standard magnetometers, 50 years mixed composition of primary elements taken at an energy higher than that of the with a discussion of the most important it takes magnetic eld measurement to is now favoured at energies above 1019 eV famous “knee” in the cosmic-ray spectrum future accelerator measurements needed for new heights: measuring higher elds with (previously the data were considered (which corresponds to an energy of around improving our understanding of cosmic-ray The C N Yang compatible with a ﬂ ux of only protons). 3 × 1015 eV). On the other hand, at lower data. Studying proton interactions with better resolution. Institute for Moreover, good agreement is found between energies, the muon data from IceTop (the light nuclei at the LHC is top of the wish Theoretical Physics the composition data of the two biggest air-shower array located above IceCube) are list, followed by pion–nucleus interactions The PT2026 offers unprecedented exibility (YITP) at Stony air-shower detectors, the Pierre Auger still bracketed by expectations for proton in fi xed-target experiments at the highest Brook University in Observatory and Telescope Array. and iron particles as primaries. Data relating energies possible. The next symposium of the in the choice of parameters, interfacing the US celebrated its Comparing ALICE data relating to to pion–nucleus interactions taken with biennial ISVHECRI series will take place in and probe placement, as well as greatly 50th anniversary with atmospheric muons with state-of-the-art fi xed-target experiments, such as NA61 at Nagoya, Japan, in spring 2018. improved tolerance of inhomogeneous a symposium on 9–10 October. The YITP was founded in 1966, when Chen Ning k n O W L E D G E t r a n s F E r a W a r D elds. And with Ethernet & USB interfaces Yang came to the then almost-unknown and LabVIEW software, it ts perfectly into Stony Brook University, at the invitation CERN sets bar for cryogenic safety Lifetime achievement modern laboratory environments. of the university’s president John Toll. Together with Tsung-Dao Lee, Yang shared sizing cryogenic pressure-relief devices Robert-Jan Smits,

www.agence-arca.com - Photo: Scott Maxwell, Master le - Photo: Scott Maxwell, Master www.agence-arca.com the 1957 Nobel Prize in Physics for his that protect against overpressure, such director general for work on parity non-conservation in weak as that encountered by the LHC shortly research and innovation interactions. after it switched on in 2008. It is based on at the European The YITP is associated with several international and European standards and was Commission, is the advances in the areas of supergravity, originally conceived to respond to the specifi c fi rst recipient of a new gauge-theory renormalisation, neutrinos needs of CERN to develop valves for use with award: Recognition of and QCD collider theory, in addition to liquid helium at extremely low temperatures. Lifetime Achievements statistical mechanics. A video message CERN is a world leader in cryogenic safety. The LHC uses an unprecedented 120 tonnes Smits was one of for European Science from Yang saw the 94 year-old theorist refer of liquid helium to cool 36,000 tonnes of the architects of and Society. Created to his years at Stony Brook as a “second Around 120 experts in cryogenic safety superconducting magnets to just 1.9 K. Horizon 2020. by EuroScience, career” after his time at the Institute for met at CERN on 21–23 September for the Kryolize is supported by CERN’s an association of Advanced Study. He recalled the earliest fi rst cryogenic-safety seminar. In addition Knowledge Transfer group and currently has researchers in Europe and founder of the

Pantone 286 Pantone 032 days of supergravity and informal lectures to discussions about best practice and 30 users at CERN. Six licences have so far EuroScience Open Forum (ESOF), the from mathematician James Simons, regulatory frameworks, a highlight of the been granted to other research laboratories award cites Smit’s ability to help create which eventually “contributed to the event was a new CERN technology called and it is anticipated that, once the project new and more effective EU policies and increasingly close contact between the Kryolize developed for the cryomagnets of reaches its conclusion in mid-2017, the tool structures, co-ordinate EU tools with Magnetic precision has a name www.metrolab.com world communities of physicists and the LHC and other CERN facilities. will have applications in domains ranging national policies and align all of these mathematicians”. Kryolize is a software tool tailored for from the food industry to medicine. towards the broader needs of society.

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and gravitational waves in 2016 were triumphs V i s i t s

of experimental physics that confi rmed S Bennett S Bennett Deep discussions at DIS 2016 theoretical ideas fi rst put forward in 1964 Glenys Beauchamp, and 1916, respectively. Yet fundamental secretary, Department The 24th workshop on Deep Inelastic physics sometimes receives negative publicity of Industry, Innovation Scattering and related subjects (DIS2016) because attempts to achieve the much more and Science, Australian took place on 11–15 April at DESY in diffi cult goals of going beyond the Standard government, visited Hamburg, Germany. The event acted as a Model and unifying gravity with the other CERN on 26 October melting pot for worldwide investigations of forces have not met some stricter artifi cial and signed the the proton structure and strong interactions deadlines. Of course we must continually guestbook in the at the LHC, HERA, Tevatron, RHIC, JLAB, remind the politicians and the media of the presence of CERN COMPASS and other experiments. It also economic benefi ts of fundamental physics: director for international covered related theory advances, future PET scans from the Dirac equation, GPS from Elisabeth Laurin, ambassador relations Charlotte experiments and results from the high-energy general relativity, the Web from CERN, etc. and permanent representative Warakaulle (left) frontier. The workshop was organised into But let us not fall into the trap of boasting only of France to the United and Director-General seven separate working groups, and selected about these populist benefi ts, lest we be judged Nations Ofﬁ ce at Geneva and Fabiola Gianotti. highlights from each are given here. on them alone; let us also recall with Zichichi international organisations

Concerning structure functions and parton Blackett’s exhortation to communicate the in Switzerland (right), with P Catapano densities, the fi nal combined HERA (H1 progress of civilisation brought about by CERN Director-General Italian actress and ZEUS) inclusive DIS data have had a discovering the laws of nature. Fabiola Gianotti at the 14th Sonia Bergamasco, signifi cant impact on parton-distribution ● Michael Duff, Blackett Lab, Imperial College edition of France@CERN on who’s work includes functions (PDFs) and resulting predictions This year’s DIS workshop was attended by 327 participants representing 33 countries, London. 3–4 October. The annual event a role in the 2008 of LHC processes. ATLAS, CMS and LHCb presenting 270 talks on a variety of subjects. welcomed representatives Italian television movie presented the fi rst production measurements Blackett, the UK and CERN from 37 companies covering a Einstein, visited CERN of W and Z bosons and of jets made at LHC NNLO QCD predictions for differential adding signifi cant constraints on the quark As pointed out in your review of Antonino wide range of sectors including on 13 October, during Run 2, which will help to further constrain distributions, which have only recently and gluon spin contributions. COMPASS, Zichichi's book about Patrick M S Blackett engineering mechanics, energy, which she took in the the PDFs. become available. These calculations improve HERMES and JLAB also presented new (CERN Courier September 2016 p59), the transport and information surroundings of the In the electroweak and beyond-the- the description of the observed top-quark studies of semi-inclusive DIS. author offers his personal testimony, from technology. CERN Control Centre. Standard-Model sector, many fi nal Run 1 transverse-momentum spectrum and open a Finally, with regard to future the fi rst time he heard Blackett’s name to results were reported by ATLAS and CMS new precision era in top physics. Many new experiments, there is much to look when he went to work with him, and then on the Higgs boson as well as on precision beauty and charm results were presented forward to. JLAB will continue its about the research he could be involved measurements of multiboson production. No such as the fi rst Run 2 measurements of 3D-hadron-imaging studies with a second in. I would like to add one important INTENSIVE PROGRAM deviations from the Standard Model were open-charm production by LHCb. generation of experiments using its 12 GeV point, outlined in the book, which was FOR MASTER & PhD STUDENTS observed, and it is clear that the community Regarding low-x, diffraction and vector electron beam, while COMPASS and STAR not mentioned in the review: namely the AND FELLOWS is in need of calculations including mesons, theorists propose to carry out will take further data until 2017. Despite the decisive role of Blackett in the foundation PRACTICAL LABORATORY SESSIONS next-to-leading order (NLO) electroweak extended studies at the LHC with events achievements by these facilities, the lack of CERN. AT CERN ≤ corrections if it is to compete with the LHC’s containing “Mueller–Navelet” jets (two of experimental information for x 0.01 The important role of I I Rabi and other ACCREDITED BY experimental precision. forward jets with a large rapidity gap between remains a severe limitation. As such, scientists, who initiated the foundation of PARTNER UNIVERSITIES (ECTS) : A wealth of new LHC results concerning them). Several advances were presented on the there is great hope that the Electron Ion CERN via UNESCO, has been outlined on QCD and hadronic fi nal states were presented, phenomenology of diffractive vector-meson Collider (EIC) project in the US will lead many occasions. Zichichi’s book, however, which often probe the fi nal-state kinematics in production at HERA, where the fi rst to comprehensive 3D hadron imaging and describes the important role played by PHYSICS OF PARTICLE AND great detail. Theorists are attempting to match measurement of the reaction γ + p → ρ0 π+ n solve the spin puzzle. On the energy frontier Blackett in getting the UK, which had the improved experimental precision, for was reported by H1. Ultra-peripheral there is also the intriguing opportunity of been an observer until then, to ratify the ASTROPARTICLE DETECTORS example with generators based on full next-to- collisions in nuclear collisions at the LHC an electron–ion collider in the envisaged CERN convention on 30 December 1953. 23 January to 17 February 2017 next-to-leading order (NNLO) calculations. and RHIC are another hot topic in the low-x 54 km ring accelerator complex in China. Indeed, the infl uence that Blackett – who 4 week course The description of the underlying event community at this time. Such machines could provide a unique was a former chief adviser for operational and double-parton scattering was another Concerning the long-standing spin puzzle precision tool for a complete fl avour research in the Admiralty during the TECHNOLOGIES & APPLICATIONS important topic, with many new experimental – i.e. the question of how the nucleon’s decomposition of the proton structure and Second World War – had at government FEES and theoretical results being debated. spin is distributed among its constituent would cover a broad spectrum of strong and level allowed him to overcome the initial 20 February to 17 March 2017 200/500€ In the heavy-fl avour community, new partons – new spin-asymmetry results were electroweak physics. resistance in the UK government, which 4 separate Modules : per Module CMS top-pair production data from Run 2 presented by COMPASS as well as by the The next DIS workshop will take place in was willing to accept expenditure on (student/pro) have been compared to the fi rst complete PHENIX and STAR experiments at RHIC, Birmingham, UK, from 3 to 7 April 2017. nuclear projects but reluctant to spend Module 1 Module 2 Module 3 Module 4 comparable sums on fundamental research detector real time Mechanics Offline L E t t E r s technologies & computing & & Medical computing in a European organisation. electronics data Handling applications 13 to 17 March Hence, in the words of physicist Lew 20 to 24 27 February 6 to 10 March Following Blackett’s advice You do not have to look very far to fi nd over academic excellence. There is also a Kowarski written in 1973 (CERN Courier February to 3 March Your review of Antonino Zichichi’s the enemies of fundamental research. First tendency for research councils, university September 2016 p62), “important events such tribute to Patrick Blackett (CERN Courier there are those journalists looking for a presidents and learned societies to toe as the creation of CERN – only a few years APPLY September 2016 p59) touched upon dramatic storyline and the growing band of the government line, encouraging some after World War II, with Germany joining www.esi-archamps.eu NOW Blackett’s conviction that physicists should unqualifi ed commentators on the internet. fellow scientists to claim that attention and Britain among the signatories of the communicate to society the contribution of Then there are the politicians following an and money should be diverted away from CERN Convention – do not happen without ESI / ESIPAP - octobre 2016 science to the progress of our civilisation. “impact” agenda that favours perceived high-energy physics. the engagement of strong personalities”. Crédits photo : ESIPAP - Cern Never before has this been more pertinent. short-term economic benefi ts of research The discovery of the Higgs boson in 2012 ● Horst Wenninger, CERN. Porte Sud de Genève www.indelebile-creation.com

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and gravitational waves in 2016 were triumphs V i s i t s

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CERNCOURIER www. V o l u m e 5 6 N u m b e r 1 0 D e c e m b e r 2 0 1 6 CERN Courier December 2016 CERN Courier December 2016 Silicon Drift Detectors Faces & Places Faces & Places • Solid State Design • Easy to Use • Low Cost O B i t u a r i E s FAST SDD® David Jackson 1925–2016 Edward J Lofgren 1914–2016 Count Rate = >1,000,000 CPS One of the few remaining physicists Bevatron era also saw the fi rst industrial-scale Resolution Peaking Time The life of John David Jackson bridged the who worked on the Manhattan Project, physics collaborations, where large groups 125 eV FWHM 4 µs era of tabletop nuclear-physics experiments Ed Lofgren passed away peacefully on would systematically analyse millions of and the modern age of large, complex GottfriedK 6 September at the age of 102. He was a key photos taken at bubble chambers. The dozens 130 eV FWHM 1 µs accelerators. Jackson’s fi rst professional fi gure in the development of the Bevatron at of meson and baryon resonances that were 140 eV FWHM 0.2 µs appointment was in 1949 as assistant Lawrence Berkeley National Laboratory and discovered provided the impetus for the 160 eV FWHM 0.05 µs professor of mathematics at McGill was its fi rst director during the early days of introduction of the quark model. University in Montreal, Canada, where, large-scale particle physics. Later, in 1965, Lofgren led the “200 BeV” half a century earlier, Ernest Rutherford Lofgren was born in Chicago as the design study at Berkeley, but after the decision 5.9 SDD Spectrum keV fi rst showed that radioactive matter youngest of seven in a family of Swedish was made to build Fermilab in Illinois he 55Fe emits three distinct types of radiation. immigrants, and attended Los Angeles Junior did not take part in the project. By 1970, eV FWHM Shortly after moving to Manchester, College in 1931. He was accepted by Caltech when the Bevatron’s 6 GeV beams had fallen Counts 125 UK, Rutherford performed the famous but could not fi nd a job that paid enough to Bevatron pioneer Ed Lofgren. far behind other accelerators, Lofgren and 25 mm2 x 500 µm alpha-particle scattering experiment, which be able to afford it. Later, he transferred to Herman Grunder gave it a new lease of life 11.2 µs peaking time 6.4 P/B Ratio: 20000/1 keV demonstrated the existence of the nucleus. the University of California at Berkeley and substantially higher accelerating effi ciency by converting it into a heavy-ion accelerator: Energy (keV) When Jackson arrived at McGill, much received his undergraduate degree in 1938. In and a maximum energy almost 10 times the Bevalac. The Bevalac pioneered the fi elds of Canadian physics was still under the 1941, Lofgren interrupted his graduate studies higher than the initial design. Following a of relativistic heavy-ion physics, high-energy Resolution vs Peaking Time spell of Rutherford: theoretical physicists Jackson is well known for his Classical at Berkeley to contribute to the war effort, in brief stint at the University of Minnesota calibration of satellite cosmic-ray 180 25 mm2 were often only found in mathematics Electrodynamics textbook. which he developed uranium-hexaﬂ uoride investigating cosmic rays with high-altitude instrumentation, and medical treatments with 170 departments, and quantum mechanics sources used in the Calutron “farm” at Oak balloons, Lofgren returned to the “Rad Lab” heavy-ion beams. Many hundreds of cancer Standard SDD was not even taught. Jackson played a 1967, he accepted a professorship at the Ridge for uranium enrichment (which would at Berkeley in 1948 and served as director patients were treated with neon and other 160 signifi cant role in changing this character University of California in Berkeley, later become the topic of this PhD thesis). In of the Bevatron from 1954. He continued beams at the facility, laying the foundations ® his stewardship of this accelerator until his for today’s hadron-therapy programmes. 150 FAST SDD of physics in Canada. where he remained for the rest of his life. 1944 he moved to Los Alamos and manned a Jackson was born in London, Ontario, The “November Revolution” of 1974 radiation-monitoring site located 9 km from retirement as a laboratory associate director His three daughters remember him as a 140 and obtained his undergraduate education gave Jackson the opportunity to display Ground Zero, where the fi rst nuclear test was in 1979. caring father always willing to describe the at the University of Western Ontario. his mastery of “simple” nuclear physics carried out. Starting from its fi rst operations in natural wonders around him to anybody who 130

Resolution (eV FWHM @ 5.9 keV) In 1946 he was admitted to MIT, where and quantum mechanics in his overnight After the war, Lofgren worked on an 1954, when the Bevatron was the world’s would listen. Even in his last weeks of life, he 120 he obtained his doctorate under Victor analysis of the amazingly narrow J/ψ experimental verifi cation of the McMillan– highest-energy machine, seminal experiments was seen explaining the famous San Francisco 0 1 2 3 4 5 Peaking Time (μs) Weisskopf. His thesis on neutron–proton resonance discovered in electron–positron Veksler “phase-stability” principle by contributed to the foundations for particle fog to fellow residents at his Oakland scattering, published in a widely known collisions at SPEAR. At fi rst his calculation converting the 37ʺ Cyclotron into the world’s physics. The antiproton was discovered in retirement centre. He will be greatly missed. Throughput paper with John Blatt, led to an offer of of the J/ψ width was controversial, but fi rst synchro-cyclotron. This led to the 1955, swiftly followed by the antineutron in ● Jose Alonso, Lawrence Berkeley National 1,00,0000 a postdoc position from Hans Bethe at before long he was shown to be correct. redesign of the 184ʺ Cyclotron, offering a 1956 and multiple resonances thereafter. The Laboratory. 0.2 μs Cornell at a time when Feynman was doing Owing to his outstanding personality his famous work there. Although Cornell and superb technical ability, Dave (as he 100,000 1 μs was among the hottest destinations in was often known) was in great demand for theoretical physics at the time, Jackson public service. In addition to membership Peter Weilhammer 1938–2016 4 μs felt an obligation to return to Canada. of the National Academy of Sciences 10,000 He later wrote that “the foolishness and and many important committees, he

Output Count Rate (OCR) Output Count chauvinism of youth is evident in my was acting head of the Fermilab theory Peter Weilhammer passed away on 27 May. headed two international collaborations acceptance of the [McGill] offer.” But it department (1972–1973), editor of Annual He was born in 1938 in Munich and obtained on radiation-hard silicon and diamond 1,000 1,000 10,000 100,000 1,000,0000 was at McGill that Jackson fi rst displayed Reviews of Particle and Nuclear Physics his PhD in physics at the Ludwig Maximilian detectors. Following this, he was chairman Input Count Rate (ICR) his remarkable talents as a teacher of (1977–1993), chair of the Berkeley physics University in 1969, after which he became of BELLE’s silicon-vertex-detector review theoretical physics and developed the fi rst department (1978–1981) and deputy a research staff member of the Max Planck committee, a member of the CERN technical draft of what was to become the fi rst (1962) director of the central design group for Institute and worked with Werner Heisenberg. advisory board to the Director-General edition of his famous textbook, Classical the Superconducting Super Collider In 1971 he came to CERN, where his and elected spokesman of the CIMA Electrodynamics. (1984–1987). Jackson was also a strong achievements covered the whole spectra of collaboration for the development of novel In 1956, Jackson spent a year at proponent of increasing the participation of work from particle-physics analysis, detector SPECT and PET instrumentation. Princeton. In that year he produced a women in physics. technology and steering the future of CERN. Peter made outstanding contributions to brilliant study of the muon-catalysed David Jackson inspired many because Peter’s managerial capabilities were high-precision semiconductor detectors, fusion of protons and deuterons into He3, of the character traits he displayed to his recognised very early, and his record is entering this domain at the beginning of the and participated actively in the stream of colleagues, in his lectures, his publications impressive. In the early 1970s he was an Peter Weilhammer held many roles at CERN. 1980s with the NA11 experiment. He was one Please see our web site for complete developments unleashed by the discovery and even in his infamous homework offi cial CERN observer at Brookhaven of the main proponents and constructors of specifications and vacuum applications of parity violation. In the summer of 1957, problems: intellectual rigour, tenacity and National Laboratory and a member of its and 1984–1989 he was spokesperson high-precision vertex detectors for the NA11, Jackson accepted a professorship at the self-discipline in the pursuit of demanding scientifi c council. In the period 1972–1976, of the ACCMOR collaboration; led the NA32, DELPHI and ATLAS experiments, University of Illinois at Urbana, where his goals, strict honesty, and a total absence of he was a physics programme co-ordinator WA3 and NA32 experiments; and, later, showing continuous initiative in developing ® AMPTEK Inc. research focus began to turn to particle and vanity. at CERN, a secretary of the nuclear-physics led the DELPHI micro-vertex team. new devices and pursuing systematic studies ● [email protected] high-energy physics, and in 1963–1964 Kurt Gottfried and Maury Tigner, Cornell research board and an adviser to the then From 1986–1999 he was head of CERN’s in heavy-radiation environments and for ▲ www.amptek.com he undertook a sabbatical at CERN. In University. Director-General. In the periods 1974–1981 solid-state detector group, and also different applications.

CERNCOURIER www. V o l u m e 5 6 N u m b e r 1 0 D e c e m b e r 2 0 1 6 CERN Courier December 2016 CERN Courier December 2016 Faces & Places Recruitment Peter was full of initiative, very energetic In addition to all of this, Peter was a both in our professional and private lives. and not afraid of taking risks. He worked professional ski instructor and a climber, Our thoughts go to his family and many F o r advertising e n q u i r i e s , c o n ta c t CERN C o u R i E R recruitment / c l a s s i F i e d, ioP P u b l i s h i n g , te m P l e c i r c u s , te m P l e Way, b r i s t o l bs1 6hg, uK. te l +44 (0)117 930 1264 Fa x +44 (0)117 930 1178 e- m a i l s a l e s @ cerncourier . c o m closely with people from all over the and many of us have enjoyed trips with him friends. P l e a s e c o n ta c t u s F o r inFormation a b o u t r at e s , c o l o u r o P t i o n s , Publication d at e s a n d d e a d l i n e s . world, helping them as much as he could. in the mountains. He inspired many of us ● His friends and colleagues.

Postdoctoral Research Positions Wolfhart Zimmermann 1928–2016 LIGO Laboratory

Wolfhart Zimmermann, who passed away Zimmermann (left) with Rolf Hagedorn. The Laser Interferometer Gravitational-Wave Observatory (LIGO) has as its on 18 September, was one of the outstanding Applications for postdoctoral research positions with goal the development of gravitational wave physics and astronomy. The LIGO German theoretical physicists of the second “LSZ” theory on a weak-convergence LIGO Laboratory should indicate which LIGO site Laboratory is managed by Caltech and MIT, and is funded by the National part of the 20th century. He made inﬂ uential asymptotic condition for the fi eld operators (Caltech, MIT, Hanford, or Livingston) is preferred by Science Foundation. It operates observatory sites equipped with laser discoveries and in 1991 he received the Max by asymptotic free fi elds, thus establishing the applicant. Applications should be sent to interferometric detectors at Hanford, Washington and Livingston, Louisiana, which Planck medal for contributions to quantum a connection between the physical HR@ligo.caltech.edu (Electronic Portable Document recently made the first confirmed detection of gravitational waves. A vigorous fi eld theory and renormalisation theory. interpretation in terms of particles and the Format (PDF) submittals are preferred). Caltech Zimmermann studied physics and collision cross-section. The LSZ approach LIGO Laboratory R&D program supports the development of enhancements and MIT are Affirmative Action/Equal Opportunity mathematics in Freiburg and Göttingen, was the starting point of the proof of the to the LIGO detector as well as astrophysical data analysis, and development of employers. Women, minorities, veterans, and disabled completing his thesis in cohomology in experimentally verifi ed dispersion relations future detectors and detector technologies. persons are encouraged to apply. 1950. He spent several years in the US, at the and also led to experimentally verifi able The LIGO Laboratory anticipates having one or possibly more postdoctoral Institute for Advanced Study, the Courant predictions that can be extended to cover Applications should include curriculum vitae, list of research positions at one or more of the LIGO sites – Caltech, MIT and at Institute of Mathematical Science and the situations with composite particles. publications (with refereed articles noted), and the the two LIGO Observatories in Hanford, WA and Livingston, LA – beginning University of Chicago. He then returned perturbative-renormalisation theory, and the Zimmermann was closely involved in names, addresses, email addresses and telephone in Fall 2017. Hires will be made based on the availability of funding. Successful to Europe, becoming a fellow at the Max development of a general theory of quantised the physics and physicists of CERN and numbers of three or more references. Please attach applicants will be involved in the operation of LIGO itself, analysis of LIGO Planck Institute for Physics and Astrophysics fi elds. Guided by the experience from particularly with Henri Epstein, Yurko a cover letter describing past experience and current data, both for diagnostic purposes and astrophysics searches, and/or the R&D in Munich, followed by director in 1991. renormalised-perturbation theory, Lehmann, Glaser, André Martin and Raymond Stora. and future research interests. Applicants should request ● program for future detector improvements. We seek candidates across a broad His scientifi c work concerned Simanzyk and Zimmermann based their Philippe Blanchard, Bielefeld University. that three or more letters of recommendations be sent range of disciplines. Expertise related to astrophysics, modeling, data analysis, directly to [email protected] (Electronic Portable electronics, laser and quantum optics, vibration isolation and control systems Document Format (PDF) submittals are preferred). is desirable. Most importantly, candidates should be broadly trained scientists, Consideration of applications will begin December 15, willing to learn new experimental and analytical techniques, and ready to share 2016 and will continue until all positions have been in the excitement of building, operating and observing with a gravitational-wave filled. observatory. Appointments at the postdoctoral level will initially be for one-year comsol multiphysics ® with the possibility of renewal for up to two subsequent years.

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