Faces & Places

® ® FRIALIT -DEGUSSIT CERN Courier September 2014 CERN Courier September 2014 Oxide Ceramics IPAC’14 Faces & Places the challenge remains to achieve a beam of useful quality, whether for science or for other applications, and initiatives are under way in various countries to investigate the underlying physics further. using the interaction of intense laser beams with a solid target P r i Z E s as a means to accelerate protons and ions has a shorter history, following the discovery of such an effect in 2000. For some years EPS honours ALICE’s heavy-ion researchers the proton energy produced seemed limited to 70 MeV, but recent experiments have shown that the “laser break-out afterburner” mechanism can produce protons with energies up to 130 MeV. other effort has gone into testing methods for producing useful intense, mono-energetic beams. These systems offer potential for opening up ion-beam physics and neutron science based on short-pulse lasers in universities, and could become ideal compact sources of ion beams for medical applications. The programme at iPAc’14 highlighted the diverse demands that exist today on accelerator r&D, coming from a variety of High voltage accelerator assembly for ion-source, Ø 560 x L450 mm fi elds – neutron sources, synchrotron radiation, medical applications, etc. Accelerator physics and technology is maturing into a research fi eld in its own right and needs well-planned R&D pro- The winners of the 2014 Lise Meitner Prize. Left to right: Johanna Stachel, Peter Braun-Munzinger, Paolo Giubellino and Jürgen grammes to provide long-term solutions to these requests. in this Schukraft. (Image credits: A Saba/ALIC and, 2nd from right, CERN-GE-1210203-03.) respect, the fi eld has outgrown its origins in high-energy physics, The european Physical Society (ePS), features of a deconfi ned state of strongly and unexpected features of such a deconfi ned but the conference ended back at the high-energy frontier, where through its nuclear Physics Division, has interacting matter at the highest temperatures state of strongly interacting matter at the recent results from the LHC and other facilities have had a signifi - awarded the 2014 Lise Meitner Prize jointly ever produced in the laboratory”. The prize is highest temperatures ever produced in the cant impact on particle physics. However, outstanding questions to Johanna Stachel of the Physikalisches given every two years for outstanding work laboratory. Striking highlights of results remain, and these will continue the drive to higher energies. Pro- institut der universität Heidelberg, Peter in the fi elds of experimental, theoretical or from ALice include the bulk production of jects such as the Fcc with which the conference started are among Braun-Munzinger of GSi, Paolo Giubellino applied nuclear science. charmonium exhibiting novel mechanisms the important options for the future – a future that seems set to see of inFn Torino and cern, and Jürgen Quark–gluon plasma is the state of of hadronization; jet quenching, with an the breadth of accelerator research continue to grow. Schukraft of cern. They are rewarded deconfi ned and thermalized QCD matter at unexpected momentum dependence of the ● “for their outstanding contributions to the high temperature. it is a fundamentally new production of identifi ed particles at high iPAc’14 was organized under the auspices of the european experimental exploration of the quark–gluon state of matter that most likely permeated momentum; substantial heavy-quark energy Physical Society Accelerator Group (ePS-AG), the Asian plasma using ultra-relativistic nucleus– the early universe after the electroweak loss, as seen via the topological reconstruction committee for Future Accelerators (AcFA), the American Physi- nucleus collisions, in particular to the design phase transition. its study bridges nuclear of charmed D mesons; and the production of Kicker chamber with TiN coating, cal Society Division of Physics of Beams (APS-DPB) and the and construction of ALice and shaping its and particle physics, with connections to antimatter and antihypernuclei. The fi eld of physics programme and scientifi c results, astrophysics and cosmology. The fi rst period lattice QCD has also benefi tted strongly from Ø 150 x L 300 mm international union of Pure and Applied Physics (iuPAP). For the programme and all of the contributions, see http://accelconf.web. bringing to light unique and unexpected of LHc data-taking brought to light unique these new and exciting results. cern.ch/Accelconf/iPAc2014/. in 2015, iPAc will return to north a PPOiNtMENts America and take place in richmond, Virginia. Lykken and Meyer join Fermilab management Résumé Les accélérateurs à l’honneur à Dresde The beginning of July brought changes at Joe Lykken, far High-quality products made of FRIALIT-DEGUSSIT-Ceramics La Conférence internationale sur les accélérateurs de particules the top of Fermilab’s management, with a left, and Tim Meyer (IPAC), associant sessions plénières, sessions parallèles et new deputy director and chief operating join Fermilab’s like aluminium oxide and zirconium oxide with brilliant material offi cer beginning their terms. Joe Lykken, management. properties for extreme requirements in the fi elds of electrical, affi chages, est la grande rencontre annuelle sur l’actualité a theoretical physicist at Fermilab, became (Image credit: high temperature and mechanical engineering as well as in des accélérateurs de particules. Il y est question aussi bien de the laboratory’s newest deputy director on Fermilab Visual l’expérience observée avec des machines opérationnelles que des research and development. 1 July, fi lling a position that had been vacant Media Services.) études portant sur des concepts innovants. Cette année, IPAC’14 a since the arrival of the current director, eu lieu à Dresde, en juin, et a rassemblé plus de 1200 participants. nigel Lockyer, in September 2013. Also Il y a été question de très petits et de très grands accélérateurs, à des on 1 July, Tim Meyer, previously of the énergies très faibles ou très élevées ; des idées ont été échangées canadian national laboratory TriuMF, assumed the role of Fermilab’s chief communicating the laboratory’s scientifi c Before coming to Fermilab, Meyer FRIATEC Aktiengesellschaft sur les projets futurs visant à explorer les frontières de l’énergie, operating offi cer. vision and programme with stakeholders. was head of strategic planning and Steinzeugstraße 50 de l’intensité et de la brillance dans les décennies à venir. Les As deputy director, Lykken will work to Having joined Fermilab in 1989, he will communication at TriuMF for seven 68229 Mannheim applications des accélérateurs et les interactions avec l’industrie implement the recommendations of the uS continue to serve as a member of the years. in addition, he served as an expert in Tel +49 621 486-0 ont également fi guré en bonne place au programme. Particle Physics Project Prioritization Panel Theory Group. He is also active on the science and public policy at the uS national (CERN Courier July/August 2014 p12), with cMS experiment at cern’s LHc, both in Academies in Washington, Dc, and as a Christine Sutton, CERN, with thanks to Gianluigi Arduini, CERN, chair of the a focus on establishing and strengthening searches for supersymmetry and measuring senior programme offi cer for their Board on Scientifi c Programme Committee. Fermilab’s international partnerships and properties of the Higgs boson. Physics and Astronomy.

31 www.friatec.de

cerncourier www. V o l u m e 5 4 N u m b e r 7 S e p t e m b e r 2 0 1 4 CERN Courier September 2014 CERN Courier September 2014 Faces & Places Faces & Places

Chattopadhyay About 140 physicists met in Orsay and Paris at the 5th Higgs Hunting Workshop held on 21–23 July, to returns to new discuss the developments of ongoing analyses and detailed studies of the boson discovered two years ago by ATLAS and CMS, as well as possible challenges in the US deviations from the properties predicted by the Standard Model. Searches for additional bosons, After more than seven years at the helm of prospects with future accelerators and recent the uK’s cockcroft institute as inaugural theoretical developments were also covered. Among director and Sir John cockcroft chair of those attending were four pioneers in the Physics (jointly with the universities of development of the Standard Model and discovery Liverpool, Manchester and Lancaster), Swapan Chattopadhyay – moving from the of the new boson. From left to right, Jim Virdee, Swapan chattopadhyay is to join UK to Illinois. (Image credit: Jean Iliopoulos, Tom Kibble and Luciano Maiani. Fermilab’s senior leadership team in a J Chattopadhyay.) (Image credit: L Fayard.) joint appointment with northern illinois university, where he will serve as a the country’s accelerator community distinguished professor and director of and cern. He will continue this role in i N D u s t r Y accelerator research. This appointment the summer months as a senior scientifi c will boost Fermilab’s aspirations in associate at cern and the uK’s Science CERN supports new business accelerator-driven particle physics, while and Technology Facilities council (STFc), building up a collaborative academic and advancing collaborative research between advanced-accelerator r&D programme. cern, the STFc and Fermilab. incubation centre in the Netherlands chattopadhyay’s tenure at the cockcroft The new appointment comes on the heels of institute witnessed its growth from the recently released report from the Particle cern and nikhef, the Dutch national The Bic will support the development and inception to a fully established, staffed Physics Project Prioritization Panel (P5). institute for Subatomic Physics, have exploitation of innovative ideas in technical and internationally recognized scientifi c chattopadhyay’s expertise will help Fermilab announced the opening of a new business fi elds related broadly to CERN’s activities centre of excellence. During this time he to align with the P5 recommendations and incubation centre (Bic) hosted at the in high-energy physics, such as detectors, helped to re-establish a vibrant accelerator fulfi l its part of the P5 vision for the future of Amsterdam Science Park, where nikhef cooling technology and high-performance research programme in the uK, and was a particle physics (CERN Courier July/August is located. The centre will provide new computing. cern will contribute with key player in cementing the links between 2014 p12). technology-transfer opportunities to bridge the transfer of technology and know-how the gap between basic science and industry, through technical visits to cern, support at C O - O P E r a t i O N supporting businesses and entrepreneurs the Bic and licensing of cern intellectual Technology Department, and will now in taking innovative technologies related to property at preferential rates. nikhef will CERN-ITER concentrate on a different challenge – the high-energy physics from technical concept provide offi ce space, expertise, business and CERN’s director-general, Rolf Heuer, left, High Luminosity LHc (CERN Courier to market reality. The announcement was fundraising support. with Nikhef’s director Frank Linde. (Image collaboration under January/February 2014 p23). made on the occasion of a symposium in The collaboration between cern and credit: Hanne Nijhuis/Nikhef.) Since 2008, when the two organizations Amsterdam organized by nikhef to mark nikhef builds on nikhef’s incentive scheme new leadership signed a co-operation agreement, cern cern’s 60th anniversary and highlighting to support entrepreneurship, and on the and partners, which is located close to and the global fusion project iTer have Dutch contributions to the advance of establishment of Amsterdam Venture Lab, nikhef and provides facilities and support collaborated in the design and manufacturing fundamental physics and related technologies. an initiative of the university of Amsterdam for early-stage research-based start-ups. on 24 June, the cern-iTer collaboration of superconducting magnets and associated steering committee came together at the technologies (CERN Courier May 2008 p26). iTer headquarters for its annual meeting, As part of this collaboration, cern became with cern’s Lucio rossi presiding for the “reference laboratory” for testing iTer’s In 1965, CERN the last time. rossi has handed the baton to superconducting strands (CERN Courier Council approved colleague Miguel Jimenez, head of cern’s January/February 2010 p6). a project that was to go beyond the basic programme agreed in the convention signed in 1953 (p24). The Intersecting Storage Rings not only greatly extended the energy reach of experiments at CERN by being the world’s fi rst hadron collider, the project also required the extension of CERN’s site into France, in an agreement signed in September 1965. The black-and-white photo shows the ISR under construction in September 1970. While the fi elds in the foreground are in Switzerland, the building site is all in France, since the border dog-legs in the direction of the woods to the top left. Meyrin village is dimly visible to the top right. The colour photo shows the site taken from the opposite direction in January 2004, with From left to right: Neil Mitchell (ITER Magnet Division Leader), Lucio Rossi (CERN), the Jura mountains in the distance. The water tower is clearly visible in both images. Miguel Jimenez (CERN) and Arnaud Devred (ITER Superconductor & Feeder Section (Image credits: CERN-SI-7009161 and CERN-SI-0402020.) Leader). (Image credit: ITER/Sabina Griffi th.)

32 33 cerncourier www. V o l u m e 5 4 N u m b e r 7 S e p t e m b e r 2 0 1 4 CERN Courier September 2014 CERN Courier September 2014 Faces & Places Faces & Places

32 33 cerncourier www. V o l u m e 5 4 N u m b e r 7 S e p t e m b e r 2 0 1 4 CERN Courier September 2014 CERN Courier September 2014 Silicon Drift Detector Faces & Places Faces & Places • Solid State Design • Easy to Use C O N F E r E N C E L h C EXPEriMENts • Low Cost Half a century of Bell’s theorem MoEDAL prepares for new physics at LHC restart FAST SDDTM Count Rate = >1,000,000 CPS This year sees the 50th anniversary not only of the proposal of quarks, but also of what Resolution Peaking Time is arguably one of the most groundbreaking theoretical ﬁ ndings in physics: Bell’s 125 eV FWHM 4 µs theorem (Bell 1964). 130 eV FWHM 1 µs To celebrate the theorem and the work of 140 eV FWHM 0.2 µs the irish physicist John Stewart Bell, who 160 eV FWHM 0.05 µs was on leave from cern when he wrote his seminal paper, the university of Vienna held SDD Spectrum 5.9 the conference Quantum [un]Speakables ii keV on 19–22 June. Distinguished invited 55Fe specialists in the question of non-locality eV FWHM brought up by Bell’s theorem discussed

Counts 125 25 mm2 x 500 µm the impacts of the theorem and the future 11.2 µs peaking time 6.4 of scientifi c investigations, together with P/B Ratio: 20000/1 keV 400 participants. John Bell. (Image credit: Renate Bertlmann.) Energy (keV) John Clauser, who was the fi rst to investigate Bell’s theorem experimentally, what he called “unspeakables”. These are Resolution vs Peaking Time 180 mentioned the diffi culties he had in notions that he wanted to eliminate from the 25 mm2 acquiring money for his experiments. vocabulary of physics, because for him they Participants at MoEDAL’s second collaboration meeting held at CERN in June. (Image credit: Richard Soluk.) 170 The breakthrough did not come until the did not qualify as well defi ned – among them 160 Standard SDD 1980s, when Alain Aspect measured a clear measurement, apparatus and information. The MoeDAL (Monopole and exotics volumes. importantly, it is the only LHc respond to the highly ionizing particles of

TM violation of Bell’s proposed inequalities. However, the title also allowed for another Detector at the LHc) collaboration – detector that can trap and detect magnetic various new-physics scenarios. MoeDAL’s 150 FAST SDD The philosophical debate between niels meaning. After 50 years, many important which now consists of 64 physicists from and electric charge. technical co-ordinator, richard Soluk of the Bohr and Albert einstein on whether implications of Bell’s theorem have been 21 institutes worldwide – held its second The fi rst day of the collaboration meeting university of Alberta, then described the 140 quantum mechanics is complete or not thus found, but there is much that follows from cern-based collaboration meeting concentrated on physics issues. nick plans for the detector installation. The main 130 seemed also to be settled experimentally the theorem that no one talks or even thinks on 19–21 June. There were many new Mavromatos of King’s college London, the challenge here is the need to co-ordinate with Resolution (eV FWHM @ 5.9 keV) – in favour of Bohr. in his talk, Aspect about yet, and so is still to discover. collaborators at the meeting, from canada, physics co-ordinator, set the scene with a the LHcb collaboration, which shares the 120 0 1 2 3 4 5 stressed Bell’s ingenious idea to discover the Finland, italy, Korea and the uK. notably, review of the MoeDAL experiment and its same intersection region. Peaking Time (μs) practical implications of what had until then ● Further reading the most recent addition to the MoeDAL aims. The fi rst invited speaker was Yongmin The next order of business concerned been merely a philosophical debate. Videos of the talks will be available collaboration – the Langton Star centre cho from Konkuk university, who was the the reports from the sub-detector groups: Throughput 1,00,0000 An important further development of on the website of the Austrian central based at the Simon Langton Grammar fi rst to show that there is a singular topological Mermod for the MMT, Petr Beneš of the Bell’s theorem was the Greenberger– Library for Physics of the university of School for Boys in the uK – was represented monopole solution of the Weinberg–Salam czech Technical university for the TMPX, 0.2 μs Horne–Zeilinger experiment, in which Vienna. Visit http://bibliothek.univie.ac.at/ by Becky Parker and Tom Whyntie. A model – an “electroweak” monopole. next, and Vincent Togo of inFn Bologna for

100,000 1 μs the entanglement of three instead of only zb-physik-fb-chemie/austrian_central_ high school as a collaborating institute in a Philippe Mermod of the university of Geneva the nTD. A member of the university of two particles was considered. Another physics_library.html. high-energy-physics experiment is surely a reminded participants that the hunt for cosmic Münster’s MoeDAL group gave the last important contribution was achieved with J S Bell 1964 Physics 1 195. world fi rst. monopoles is a vital complementary aspect of presentation of the day, before the attendees 4 μs 10,000 the Kochen–Specker Theorem – next to The meeting had two main themes: the search for magnetic charge. went to visit the experiment site. He Bell’s theorem, this is the second important M E E t i N G fi rst, the installation of the full detector The fi nal talk of the fi rst day introduced a described the development of an exciting Output Count Rate (OCR) Output Count “no-go” theorem for hidden variables in system around the LHcb experiment’s poignant note to the proceedings, as Laura new computer-controlled ultra-fast scanning

1,000 quantum mechanics. in their talks, Daniel The Dark Matter at the Large Hadron relatively open interaction point; second, the Patrizii from inFn Bologna spoke of the microscope for analysis of the nTDs. 1,000 10,000 100,000 1,000,0000 Input Count Rate (ICR) Greenberger, Michael Horne and Simon Collider (DM@LHC) workshop will exploitation of the extensive and potentially seminal contributions that Giorgio Giacomelli At the end of the three-day meeting, the Kochen focused on current questions in their take place at Merton college, oxford, on revolutionary fundamental-physics reach made to the quest for the magnetic monopole. mood of the collaboration was buoyant and research. Anton Zeilinger, who was co-chair 25–27 September. The aim is to develop of the experiment. MoeDAL’s purpose Giacomelli, who was MoeDAL’s deputy optimistic. Although there are challenges of the conference with reinhold Bertlmann, further simplifi ed models and effective- is the search for highly ionizing particle spokesperson, died early in 2014 (CERN to face, there are no show-stoppers. The stressed the huge impact of Bell’s theorem for fi eld-theory approaches to dark matter, avatars of new physics, such as the magnetic Courier June 2014 p45). He was remembered MoeDAL experiment is well on its way to technical applications: quantum computing, taking stock of the fi nal results of the 8 TeV monopole and massive (pseudo)-stable not only as a leading experimental particle meeting the discovery challenge of its fi rst quantum teleportation and quantum LHc run, and to prepare for the next phase charged particles. in this way, it expands physicist but also as a great human being. As a data run at the next high-energy frontier of cryptography, which are based on the concept of data taking at higher energies. There the discovery horizon of the LHc in a token of respect, the collaboration dedicated 13 TeV, which will open up in the spring of of non-locality as outlined by Bell. will be particular emphasis on exploring complementary way. unlike other LHc its recent paper on MoeDAL’s physics 2015. More personal remarks came from new dark-matter signals and on more detectors, MoeDAL is largely passive, programme to his memory. Bertlmann, who had worked with Bell as a sophisticated techniques to improve the except for its system of TimePix pixel The second day was devoted to detector C O r r E C t i O N postdoc at cern and is the protagonist of devices (TMPX) for real-time radiation issues and to how the data will be gathered Please see our web site for existing searches. it is a discussion-oriented his famous paper “Bertlmann’s socks and workshop featuring short talks by theorists monitoring. it has a dual nature, capable both and analysed. Vasliki Mitsou of the The fi rst name of physicist Bernard Bonnier complete specifications and the nature of reality”, and from Bell’s widow and experimentalists working actively on of “photographing” signals for new physics university of Valencia started the day was unfortunately missing in the recently vacuum applications Mary Bell, an accelerator physicist. LHc signals of dark matter. For further via its nuclear-track detector system (nDT) with a report from the MoeDAL software published obituary of robert Vin Mau The conference title refers to a paper that information, visit http://indico.cern.ch/e/ and of capturing highly ionizing particles group, which has the important task of (CERN Courier July/August 2014 p42). AMPTEK Inc. Bell wrote in 1984, in which he identifi ed DM-LHc2014. in its magnetic monopole trapper (MMT) understanding how the detector will Many apologies to all concerned. [email protected] www.amptek.com 34 35 cerncourier www. V o l u m e 5 4 N u m b e r 7 S e p t e m b e r 2 0 1 4 CERN Courier September 2014 CERN Courier September 2014 Silicon Drift Detector Faces & Places Faces & Places • Solid State Design • Easy to Use C O N F E r E N C E L h C EXPEriMENts • Low Cost Half a century of Bell’s theorem MoEDAL prepares for new physics at LHC restart FAST SDDTM Count Rate = >1,000,000 CPS This year sees the 50th anniversary not only of the proposal of quarks, but also of what Resolution Peaking Time is arguably one of the most groundbreaking theoretical fi ndings in physics: Bell’s 125 eV FWHM 4 µs theorem (Bell 1964). 130 eV FWHM 1 µs To celebrate the theorem and the work of 140 eV FWHM 0.2 µs the irish physicist John Stewart Bell, who 160 eV FWHM 0.05 µs was on leave from cern when he wrote his seminal paper, the university of Vienna held SDD Spectrum 5.9 the conference Quantum [un]Speakables ii keV on 19–22 June. Distinguished invited 55Fe specialists in the question of non-locality eV FWHM brought up by Bell’s theorem discussed

v i s i t s O B i t u a r i E s The Georgian minister of education and science, Tamar Sanikidze, centre Nina Byers 1930–2014 right, visited CERN on 4 June. Before seeing the CMS experimental nina Byers, a prominent theoretical co-edited with her colleague at ucLA, cavern with deputy physicist, passed away at her home in Gary Williams. She retired in 1993, but was spokesperson of the CMS Santa Monica on 5 June, succumbing an active professor emeritus until the end. collaboration Kerstin to a haemorrhagic stroke. She was a During her long career, she was a visiting Borras, right, she was pioneering physicist, contributing to the scholar at Harvard and oxford, and held shown a scale model understanding of both particle physics and several fellowships and published numerous of the detector. (Image superconductivity. papers. credit: CERN-PHOTO- nina was born to irving and eva Byers in addition to her passion for physics, 201406-120 – 17.) on 19 January 1930 in Los Angeles. She nina never stopped learning about the received her BA with highest honours from world around her. She was politically aware, the university of california, Berkeley advocating against the proliferation of in 1950 and her MA and PhD from the nuclear weapons for more than six decades, university of chicago in 1953 and 1956, and was a staunch anti-war activist. She respectively, her thesis being on π-mesic also supported many social-justice and atoms, under Gregor Wenzel. An MA from Nina Byers in her offi ce at home in 2008. environmental causes. Her passions included the university of oxford followed in 1967. (Image credit: Maggie Michaelson.) the arts, with a love of classical music and On 6 June, Ying-tai Lung, Taiwanese minister of She began her career as a research fellow fi lm, and an inclination towards modern art culture, centre, witnessed an “Accelerate@CERN” in rudolf Peierls’s group at the university fi rst on studies in CP violation and pion– and theatre. agreement between Taiwan and CERN, signed by of Birmingham in the uK in 1956. She nucleon charge-exchange scattering. in Married to Arthur Milhaupt Jr until his the director of the Taiwan Cultural Centre in Paris, then moved to Stanford university in 1958, the 1970s, her interests turned to the new death, nina is survived by her step-children Hsiao-ying Tsai, left, and CERN’s director-general, where she worked on superconductivity, gauge theories of electroweak interactions, Gretchen, Merimee, Anthony and Anne, Rolf Heuer, right. This agreement allows Taiwanese before beginning her long relationship quarkonium and bound-state systems. her niece Morissa, nephew Mark, and a artists to apply for a one-month residency at CERN. with the university of california, Los nina was active in efforts to increase the multitude of extended family, colleagues, (Image credit: CERN-PHOTO-201406-121 – 24.) Angeles (ucLA), as an assistant professor representation of women in physics. She also students and lifelong friends scattered in 1961. She was the fi rst female assistant worked to document the accomplishments throughout the globe. A truly independent professor in the physics department at of women physicists, culminating in the and inspirational woman, she will be missed ucLA and the only one for more than book Out of the Shadows: Contributions greatly by her global family. 20 years. At ucLA, she collaborated at of Twentieth-Century Women to Physics, ● Nina’s friends and colleagues.

K Kellie Leitch, centre right, Canadian minister of labour and minister of status of women, came to CERN on 10 June, visiting the ATLAS underground experimental area, in the Tom Fields 1930–2014 company of ATLAS collaboration spokesperson, Dave Charlton, right. (Image credit: CERN-PHOTO-201406-123 – 7.) Thomas Fields, a renowned physicist and 12-foot hydrogen bubble chamber. former two-time director of Argonne in 1970 Tom was a member of a national Laboratory’s High energy Physics delegation negotiating the fi rst agreements Right to left: division, died at the age of 83 on 27 June. His for exchanges in high-energy physics Japanese career included building bubble chambers, between the uS and the Soviet union. vice-minister of studying hard quark scattering and neutrino Then, in 1979, he was a member of the fi rst education, culture, oscillations, and fostering international uS/china committee for co-operation in sports, science co-operation between the uS and the Soviet high-energy physics. and technology union and china. Following the closure of Argonne’s Zero Tsutomu Tomioka, Tom’s interest in bubble chambers began Gradient Synchrotron in 1979, Tom became in the LHC tunnel when he fi nished his PhD at Carnegie deeply involved in two new projects during the during his visit to institute of Technology in 1955, and his 1980s. First, the study of hard collisions and CERN on 2 July, adviser, roger Sutton, suggested that he jet production at Fermilab, in a collaboration where he saw the During a visit to CERN on 11 June, Seán Sherlock, build a “new type of detector called a bubble with university groups from Pennsylvania, inner triplet magnets Irish minister of state, Department of Enterprise, Jobs chamber”. Tom started with a two-inch Tom Fields on the occasion of the Wisconsin and rice universities. Second, constructed by & Innovation and Department of Education & Skills with chamber, and in the years 1957–1958 50th anniversary of the Argonne High the construction of an underground detector KEK in Japan and responsibility for research and innovation in Ireland, built a six-inch chamber, followed by a Energy Physics Division and his to search for proton decay at the Soudan Fermilab in the US, left, was shown the LHC tunnel by CERN’s director of 10-inch helium chamber when he moved to 80th birthday. (Image credit: ANL.) mine in Minnesota, in collaboration with accompanied by ATLAS physicists Katsuo Tokushuku and Tatsuo Kawamoto, and Yuko accelerators and technology Frédérick Bordry, right northwestern university and Argonne. For groups from Minnesota, Tufts, and oxford Nagano, Japan’s Strategic Programs Division. (Image credit: CERN-PHOTO-201407-139 – 5.) (Image credit: CERN-PHOTO-201406-126 – 47.) this, he learnt how to build a superconducting Sachs invited Tom to become director of universities and the rutherford Appleton magnet, the fi rst one used in particle physics, the High energy Physics Division, and a Laboratory. He also served a second term as which is now owned by the Smithsonian big challenge at that time was to assemble high-energy-physics division director, and Museum in Washington. in the 1960s Bob a team, led by Gale Pewitt, to construct the spent a year as the acting director of the new

36 37 cerncourier www. V o l u m e 5 4 N u m b e r 7 S e p t e m b e r 2 0 1 4 CERN Courier September 2014 CERN Courier September 2014 Faces & Places Faces & Places

Advance Photon Source project. neutrino beam from Fermilab and a large a paper that was published the week of his that was used at SLAc and HerA. He took (1972–1973). He was a member of the sign of a nefkens student. When Tom tried to retire, Fermilab’s iron calorimeter at the Soudan mine. He death. Tom’s calm demeanour, keen insights the “ball” to Brookhaven national Laboratory ceLSiuS/WASA project at the university of Besides physics, he was interested in music director John Peoples asked him to continued working on many aspects of the and tireless drive will be missed by all of his to use at the Alternating Gradient Synchrotron uppsala. He was also co-founder and editor of and the arts. He gave wonderful colloquia on become project manager for the MinoS MinoS experiment, helping to parameterize friends and colleagues. until the fi xed-target programme ended in the Pion-Nucleon Newsletter, and co-founder symmetries in nature, art and music. Above long-baseline neutrino project, using a new the seasonal behaviour of cosmic rays in ● Maury Goodman, ANL. 2002. There, he spearheaded a collaboration of the international conference on Meson and all, Ben loved his family and, as he would say to carry out a programme of pion–nucleon and nucleon Physics (Menu). to his collaborators, “i highly recommend kaon–nucleon scattering. in 2002 the detector He mentored many students during his playing with grandchildren.” was moved to MAMi in Mainz, where the career and taught at both undergraduate and ● William J Briscoe, The George Washington Willem Cornelis Middelkoop 1933–2014 research programme continues to this day. graduate levels. As a teacher, he had infectious University, John W Price, California State Ben held visiting appointments at Saclay enthusiasm and empathy for his students. University, Dominguez Hills and Willem (1978–1979 and 1988–1989) and cern rigorous training in the fundamentals is the T H van Oers, University of Manitoba. Former division leader at cern, Wim Wim joined the Offi ce of the LHC Project Middelkoop died on 20 May in his 82nd year. Leader, where he was responsible for all N EW P r O D u C t s After graduating from the Technical technical specifi cations, protocols and university of Delft in 1955, Wim spent two collaboration agreements. As chairman of Aerotech has announced the MPS75SLe – a interference and direction analyser in a visit http://www.physikinstrumente.com. years as an offi cer (2nd lieutenant) in the the Specifi cation Committee, he processed compact, precision ball-screw stage with hand-held device weighing only 3 kg. The royal netherlands Air Force. He joined every technical specifi cation in the LHC linear encoder that provides a positioning device also offers a persistence spectrum RST is offering its new pressure- cern as a fellow in the Synchrocyclotron project. His meticulous attention to detail resolution capability to 25 nm. The low display, which simultaneously shows equalization calculator, which is based (Sc) Division in 1957, becoming a staff was invaluable. one of his heroic efforts thermal expansion (3.3 ppm/°c) encoder changing useful signals and the underlying on a physical mathematical formula, to member in 1960, and completing a PhD on was the circumnavigation of the world results in high accuracy and repeatable interference signals, and captures with a provide extra support for its products. The elastic scattering at the Sc in 1962. in four days, negotiating contracts for positioning. Motor options include a Dc usable bandwidth of up to 22 MHz. For more online tool allows easy determination He entered the accelerator sector in 1963 superconducting cable in the uS and Japan. servomotor with a high-resolution rotary information, tel +49 7121/97 32 0, e-mail of the precise airfl ow needed to keep a when he moved to the Accelerator research After retiring, he continued to work as encoder or a stepper motor. For more [email protected] or visit www. particular system functioning. it therefore Division to replace Bas de raad, who was industrial liaison offi cer for the German information contact Steve McLane, tel +1 412 narda-sts.com. provides the right pressure-equalization on sabbatical at Stanford. The division’s delegation. As usual, he performed 967 6854, e-mail [email protected], solution for an application to minimize main research activity was around the his task meticulously, but this time on or visit www.aerotech.com/product-catalog/ Optical Surfaces Ltd has introduced new the generation of harmful condensate, cern electron Storage and Accumulator Wim Middelkoop. (Image credit: the other side of the table from cern stages/linear-stages/mps75sle.aspx. smaller-diameter (25–60 mm) refl ective for example, in electronics housings. The ring (ceSAr), on which the technique Middelkoop family.) management. He was awarded the German beam expanders for space-restricted tool is available free of charge at www. of stacking and accumulating particles Bundesverdienstkreuz (order of Merit of the Intersil Corporation has announced the applications such as with high-power lasers ventcalculator.com. was verifi ed – an essential precursor of the magnets, septa and beam dumps. From 1983 Federal republic of Germany) in 2006. expansion of its line of rad-hard voltage and multi-wavelength interferometry. These intersecting Storage rings (iSr). Following to 1988 he was deputy division leader of Wim was a faithful servant of cern references to include four new devices – the aspheric mirror-based devices offer beam Teledyne LeCroy has launched the approval of the iSr in 1966, Wim moved the SPS Division, which evolved from the throughout his career. He always applied iSL71091SeH10, 20, 33 and 40. Providing expansion or reduction capabilities, and are WaveSurfer 3000 series of mid-range to the newly formed Beam Transfer Group, 300 GeV laboratory. himself to the problem at hand with his full voltages previously unavailable for the available in standard (2.5×, 5× and 10× fi x e d oscilloscopes. The series offers 200 MHz, where he became responsible for the fast in 1988, he moved into the area of energy, whether it was technical work or rad-hard space market, the new family enables magnifi cation) or customer-specifi ed (fi xed 350 MHz and 500 MHz bandwidths; up pulsed magnets and the beam dumps. administration, becoming chairman of the administration. it was a privilege to have better overall accuracy for 11-bit and 12-bit or variable magnifi cation) confi gurations. to 4 GS/s sample rate; and fast waveform He joined de raad on the 300 GeV project governing board of the pension fund. He was worked with him. He will be remembered ADc resolution applications. The devices For more information, tel +44 208 668 6126 update, with up to 130 k wfms/s. The – the construction of the Super Proton appointed division leader of the Personnel for his tireless devotion to cern. He is are offered in the smallest surface-mount or e-mail [email protected]. instruments also feature a 10.1" touch-screen Synchrotron (SPS) and its experimental Division in 1991, where one of his major tasks survived by his widow, two daughters and leaded package available. For further details, display,16 digital channels with 500 MS/s areas – in 1971. Following his experience at was a complete overhaul of the staff rules and three sons. visit www.intersil.com/en/products/space- Physik Instrumente (PI) has introduced sample rate and a WaveSource Function the iSr, he was responsible for the design regulations, and of the grade structure. ● Lyn Evans, CERN/Imperial College and-harsh-environment/rad-hard-products/ two new, vacuum-compatible versions of Generator. For further details, tel +44 1793 and construction of all of the fast-pulsed From 1996 until his retirement in 1998, London. isl71091-voltage-reference-family.html. its compact n-470 PiezoMike precision 784389 or e-mail [email protected]. intersil has also announced the iSL2802x screw-type actuator family. Providing a family of digital power monitors, capable positional resolution of 20 nm and travel XP Power has extended its GcS series of of supporting a wide common-mode ranges between ¼" and 1", the actuators open-frame Ac-Dc supplies up to 250 W. Bernard Marie Karel Nefkens 1934–2014 input-voltage range of 0–60 V. The iSL2802x are now available for ambient applications Certifi ed to both industrial and medical family delivers accurate measurements and also in high-vacuum (HV, 10–6 Torr) international safety standards, and through an integrated 16-bit native-resolution and ultra-high-vacuum (uHV, 10–9 Torr) comprising 150, 180 and now 250 W experimental nuclear and particle physicist Ben Nefkens. (Image credit: UCLA Physics sigma-delta ADc (gain error = ±0.05% Typ), confi gurations. PI has also announced models, the GcS series is available in Bernard M K (Ben) nefkens died on Department.) providing designers with a high safety margin. a new six-axis positioning system with multiple mechanical formats – in an 10 January at the age of 79 after a long In addition, the wide specifi ed temperature 1000 lbs load capacity. The H-850KMLD industry standard 3 × 5" (127 × 76.2 mm) illness. Ben was born in the netherlands, intermediate energies. in a second study range from –40 °c to 125 °c offers greater hexapod system provides 1-μm minimum open-frame package; an enclosed where he received his PhD from nijmegen there he produced the most complete study design fl exibility. Visit http://go.intersil.com/ incremental motion across a 100-mm covered version; and top- or end-mounted university before moving on to research to date on time-reversal (T) invariance in digital-power-monitor.html. travel range in XY and 0.5 μm in the Z fan-cover options. For further faculty positions at Purdue university and the pion-three-body nucleus system. At direction. The repeatability in the three information, contact Markus Zemp, the university of illinois. in 1966 he settled TriuMF, in Vancouver, he was responsible Narda Safety Test Solutions has linear axes is ±1 μm, and ±5 μrad/9 μrad in tel +41 56 448 90 80, e-mail mzemp@ at the university of california, Los Angeles, for a unique set of neutron detectors that were introduced the iDA 2, a second-generation the rotary axes. For further information, xppower.com, or visit www.xppower.com/. where he remained for the next 45 years. used to study charge-symmetric reactions Ben’s research involved the study of around the Δ. At Saclay, his research group η the structure of the nucleon and probing studied decay modes of the meson, Les physiciens des particules du monde entier sont invités à apporter leurs CERN Courier welcomes contributions from the international the Standard Model via tests of broken and at eLSA in Bonn he worked on the contributions aux CERN Courier, en français ou en anglais. Les articles retenus particle-physics community. These can be written in English or French, symmetries such as P, c, T and cP. This photoproduction of the η near threshold. seront publiés dans la langue d’origine. Si vous souhaitez proposer un article, and will be published in the same language. If you have a suggestion for work was carried out in large part at the Los a series of high-precision measurements one of Ben’s greatest achievements was faites part de vos suggestions à la rédaction à l’adresse [email protected]. an article, please send proposals to the editor at [email protected]. Alamos national Laboratory, where he led of the pion–nucleon scattering process at refurbishing the famous crystal Ball detector

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