Download Slides

Total Page:16

File Type:pdf, Size:1020Kb

Download Slides Workshop Document Classification: Document Welcome to CERN! Restricted 20-21 May 2019 Geneva, Switzerland Frédéric Hemmer CERN - IT Department 2 The Mission of CERN Push back the frontiers of knowledge E.g. the secrets of the Big Bang …what was the matter like within the first moments of the Universe’s existence? Develop new technologies for accelerators and detectors Information technology - the Web and the GRID Medicine - diagnosis and therapy Train scientists and engineers of tomorrow Unite people from different countries and cultures CERN: founded in 1954: 12 European States “Science for Peace” Today: 21 Member States ~ 2300 staff ~ 1400 other paid personnel ~ 12500 scientific users Budget (2016) ~1000 MCHF Member States: Austria, Belgium, Bulgaria, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Israel, Italy, Netherlands, Norway, Poland, Portugal, Slovak Republic, Spain, Sweden, Switzerland and United Kingdom Associate Member States: Pakistan, Turkey States in accession to Membership: Cyprus, Romania, Serbia Applications for Membership or Associate Membership: Brazil, Croatia, India, Lithuania, Russia, Slovenia, Ukraine Observers to Council: India, Japan, Russia, United States of America; European Union, JINR and UNESCO 4 Next Scientific Challenge: to understand the very first moments of our Universe after the Big Bang Big Bang 13.8 Billion Years Today 1028 cm Big Bang Proton Atom Radius of Earth Earth to Sun Radius of Galaxies Universe LHC Super-Microscope ALMA Hubble Reproducing conditions Looking back AMS VLT 2010: a New Era in Fundamental Science LHCb CMS ATLAS Exploration of a new energy frontier in p-p and Pb-Pb collisions ALICE LHC ring: 27 km circumference Discovery 2012, Nobel Prize in Physics 2013 The Nobel Prize in Physics 2013 was awarded jointly to François Englert and Peter W. Higgs "for the theoretical discovery of a mechanism that contributes to our understanding of the origin of mass of subatomic particles, and which recently was confirmed through the discovery of the predicted fundamental particle, by the ATLAS and CMS experiments at CERN's Large Hadron Collider”. AD: Antiproton Decelerator for CERN’sCERN scientific accelerators diversity programme antimatter studies AWAKE: proton-induced plasma wakefield acceleration CAST, OSQAR: axions CLOUD: impact of cosmic rays on aeorosols and clouds implications on climate COMPASS: hadron structure and spectroscopy ISOLDE: radioactive nuclei facility NA61/Shine: heavy ions and neutrino targets NA62: rare kaon decays NA63: radiation processes in strong EM fields NA64: search for dark photons Neutrino Platform: 훎 detectors R&D for experiments in US, Japan ~20 experiments, > 1200 physicists n-TOF: n-induced cross-sections UA9: crystal collimation Future of particle physics High Luminosity LHC until 2035 • Ten times more collisions than the original design Studies in progress: Compact Linear Collider (CLIC) • Linear e+e- collider √s up to 3 TeV Future Circular Collider (FCC) • New technology magnets 100 TeV pp collisions in 100km ring • e+e- collider (FCC-ee) as 1st step? • HE-LHC in the present LHC tunnel with FCC-hh technology? European Strategy for Particle Physics • Preparing next update in 2020 CERN: Particle Physics and Innovation Interfacing between fundamental science and key technological developments CERN Technologies and Innovation Accelerating particle Detecting particles Large-scale beams computing (Grid) Medical Application as an Example of Particle Physics Spin-off Combining Physics, ICT, Biology and Medicine to fight cancer Hadron Therapy Tumour Leadership in Ion Target Beam Therapy now in Europe and Protons Japan light ions Accelerating particle beams X-ray protons ~30’000 accelerators worldwide >100’000 patients treated worldwide (45 facilities) ~17’000 used for medicine >50’000 patients treated in Europe (14 facilities) Imaging PET Scanner Clinical trial in Portugal, France and Italy for new breast imaging system (ClearPEM) Detecting particles The Worldwide LHC Computing Grid Tier-0 >170 sites in, (CERN and Hungary): 42 countries data recording, reconstruction and 750k CPU cores distribution 800 PB of storage Tier-1: permanent storage, reprocessing, analysis > 2 million jobs/day Tier-2: simulation, 35 GB/s global end-user analysis transfers WLCG: An International collaboration to distribute and analyse LHC data Integrates computer centres worldwide that provide computing and storage resource into a single infrastructure accessible by all LHC physicists CERN Education Activities Asia-Europe-Pacific Latin American School of Scientists at CERN School of High-Energy High-Energy Physics Academic Training Programme Physics Fukuoka, Japan, 2012 Puri, India, 2014 Arequipa, Peru, 2013 2016 Beijing, China Ibarra, Ecuador, 2015 2018 Quy Nhon, Vietnam San Juan del Rio, Mexico, 2017 Young Researchers CERN School of High Energy Physics CERN School of Computing CERN Accelerator School CERN School of Physics Undergraduates Italy, June-July 2018 Summer Students Programme CERN Teacher Schools International and National Public visitors Programmes 135 thousand per year Science is getting more and more global 1000 1100 100 200 300 400 500 600 700 800 900 0 18 20 22 They do not all stay: where do go? where they not all stay: do They 24 27 26 28 30 32 34 36 38 40 42 Scientists of Distribution Age 44 46 48 50 52 54 56 58 - 60 go they afterwards where and 65 >30 62 experiments in LHC 64 66 68 00 PhD students PhD 00 70 72 74 Today: 76 78 80 82 84 86 88 90 92 94 96 98 100 What’s happening now at CERN? Document Classification: Document Restricted Frédéric Hemmer, 21.5.2019 e-IRG Workshop 21 AD: Antiproton Decelerator for CERN’s scientific diversity programme antimatter studies AWAKE: proton-induced plasma wakefield acceleration CAST, OSQAR: axions CLOUD: impact of cosmic rays on aeorosols and clouds Classification: Document implications on climate COMPASS: hadron structure and spectroscopy ISOLDE: radioactive nuclei facility NA61/Shine: heavy ions and neutrino targets Restricted NA62: rare kaon decays NA63: radiation processes in CERN CERN accelerators strong EM fields NA64: search for dark photons Neutrino Platform: 훎 detectors R&D for experiments in US, Japan ~20 experiments, > 1200 physicists n-TOF: n-induced cross-sections UA9: crystal collimation Frédéric Hemmer, 21.5.2019 e-IRG Workshop 22 LS2 (2019-2020 period): coordination of multi projects Document Classification: Document Restricted Frédéric Hemmer, 21.5.2019 e-IRG Workshop 23 LS2 (2019-2020 period): coordination of multi projects Document Classification: Document Restricted Frédéric Hemmer, 21.5.2019 e-IRG Workshop 24 Master Schedule of the Long Shutdown 2 today Document Classification: Document Restricted Safety First Quality second Schedule third Frédéric Hemmer, 21.5.2019 e-IRG Workshop 25 LHC: LS2 planning (version 1.4) https://cern.ch/lhcdashboard/ls2 Document Classification: Document Restricted Frédéric Hemmer, 21.5.2019 e-IRG Workshop 26 Towards HL-LHC Document Classification: Document Restricted Frédéric Hemmer, 21.5.2019 e-IRG Workshop 27 Document Classification: Document (W) LHC Computing Restricted Frédéric Hemmer, 21.5.2019 e-IRG Workshop 28 Data - 2018 2018: 88 PB 14 PB in August ATLAS: 24.7 inc. parked b-physics data CMS: 43.6 LHCb: 7.3 ALICE: 12.4 Classification: Document 2018: 19.8 PB Restricted Data transfers ATLAS: 5.2 HI Run CMS: 7.7 HI Run LHCb: 1.2 18.6 PB in November ALICE: 5.7 Frédéric Hemmer, 21.5.2019 e-IRG Workshop 29 Data - 2018 2018: 88 PB 14 PB in August ATLAS: 24.7 inc. parked b-physics data CMS: 43.6 LHCb: 7.3 ALICE: 12.4 Classification: Document 2018: 19.8 PB Restricted ATLAS: 5.2 HI Run 330+ PB on tape CMS: 7.7 608 M files LHCb: 1.2 18.6 PB in November ALICE: 5.7 Frédéric Hemmer, 21.5.2019 e-IRG Workshop 30 New New peak: ~ 860 k cores continuous cores k 860 ~ ~270 M HS06 ~270 M - days/month Frédéric Hemmer, 21.5.2019 Hemmer, Frédéric 8 s CPU Delivered: HS06-hours/month r u o h - 7 6 0 S ALICE ATLAS CMS LHCb H n 6 o i l l i B 5 2018 pledges 2018 4 3 2 1 0 l l l l l l l l l r r r r r r r r r r y v y v y v y v y v y v y v y v y v n p n p n p n p n p n p n p n p n p n e u u u u u u u u u a a a a a a a a a a a a a a a a a a a a o a o a o a o a o a o a o a o a o a J e J e J e J e J e J e J e J e J e J J J J J J J J J J S S S S S S S S S - N N N N N N N N N M M M M M M M M M M Delivered CPU M M M M M M M M M 0 1 2 3 4 5 6 7 8 IRG Workshop IRG 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 1 1 1 1 1 1 1 1 1 0 1 2 3 4 5 6 7 8 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 Use of Pledges 1.8 ALICE ATLAS CMS LHCb 1.6 1.4 1.2 1 0.8 0.6 0.4 31 0.2 0 l t r r r c y c n g p v n b n b v c u a p a e a e u e o a e u a e J o J J J O F A S F D D A N M M M N 8 8 8 9 8 8 8 8 9 7 8 1 8 8 8 9 8 7 1 1 1 1 1 1 1 1 1 1 0 1 1 Restricted Document Classification: Classification: Document 1 1 1 1 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 WLCG Activity Document Classification: Document Restricted Frédéric Hemmer, 21.5.2019 e-IRG Workshop 32 Estimates of resource needs for HL-LHC CPU Needs for 1st Year of HL-LHC (kHS06) Data estimates for 1st year of HL-LHC (PB) 250000 1000 ALICE ATLAS CMS LHCb 900 ALICE ATLAS CMS LHCb 200000 800 700 150000 600 500 Classification:
Recommended publications
  • CERN Courier–Digital Edition
    CERNMarch/April 2021 cerncourier.com COURIERReporting on international high-energy physics WELCOME CERN Courier – digital edition Welcome to the digital edition of the March/April 2021 issue of CERN Courier. Hadron colliders have contributed to a golden era of discovery in high-energy physics, hosting experiments that have enabled physicists to unearth the cornerstones of the Standard Model. This success story began 50 years ago with CERN’s Intersecting Storage Rings (featured on the cover of this issue) and culminated in the Large Hadron Collider (p38) – which has spawned thousands of papers in its first 10 years of operations alone (p47). It also bodes well for a potential future circular collider at CERN operating at a centre-of-mass energy of at least 100 TeV, a feasibility study for which is now in full swing. Even hadron colliders have their limits, however. To explore possible new physics at the highest energy scales, physicists are mounting a series of experiments to search for very weakly interacting “slim” particles that arise from extensions in the Standard Model (p25). Also celebrating a golden anniversary this year is the Institute for Nuclear Research in Moscow (p33), while, elsewhere in this issue: quantum sensors HADRON COLLIDERS target gravitational waves (p10); X-rays go behind the scenes of supernova 50 years of discovery 1987A (p12); a high-performance computing collaboration forms to handle the big-physics data onslaught (p22); Steven Weinberg talks about his latest work (p51); and much more. To sign up to the new-issue alert, please visit: http://comms.iop.org/k/iop/cerncourier To subscribe to the magazine, please visit: https://cerncourier.com/p/about-cern-courier EDITOR: MATTHEW CHALMERS, CERN DIGITAL EDITION CREATED BY IOP PUBLISHING ATLAS spots rare Higgs decay Weinberg on effective field theory Hunting for WISPs CCMarApr21_Cover_v1.indd 1 12/02/2021 09:24 CERNCOURIER www.
    [Show full text]
  • A Spectrometer for Proton Driven Plasma Accelerated Electrons at Awake - Recent Developments∗
    Proceedings of IPAC2016, Busan, Korea WEPMY024 A SPECTROMETER FOR PROTON DRIVEN PLASMA ACCELERATED ELECTRONS AT AWAKE - RECENT DEVELOPMENTS∗ Lawrence Charles Deacon, Simon Jolly, Fearghus Keeble, UCL, London Aurélie Goldblatt, Stefano Mazzoni, Alexey Petrenko, CERN, Geneva Bartolomej Biskup, CERN, Geneva; Czech Technical University, Prague 6 Matthew Wing, UCL, London; DESY, Hamburg; University of Hamburg, Hamburg Abstract SPECTROMETER DESIGN The AWAKE experiment is to be constructed at the CERN Neutrinos to Gran Sasso facility (CNGS). This will be the first experiment to demonstrate proton-driven plasma wake- field acceleration. The 400 GeV proton beam from the CERN SPS will excite a wakefield in a plasma cell several meters in length. To probe the plasma wakefield, electrons of 10–20 MeV will be injected into the wakefield follow- ing the head of the proton beam. Simulations indicate that electrons will be accelerated to GeV energies by the plasma wakefield. The AWAKE spectrometer is intended to measure both the peak energy and energy spread of these accelerated electrons. Results of beam tests of the scintillator screen Figure 1: A 3D CAD image of the spectrometer system output are presented, along with tests of the resolution of annotated with distances along the z direction from the exit the proposed optical system. The results are used together of the plasma cell to the magnetic centers of magnets, and with a BDSIM simulation of the spectrometer system to pre- the center of the scintillator screen. dict the spectrometer performance for a range of possible accelerated electron distributions. INTRODUCTION RESOLUTION Proton bunches are the most promising drivers of wake- Optical System fields to accelerate electrons to the TeV energy scale in a The resolution of the energy spectrometer will ultimateley single stage.
    [Show full text]
  • Proton Driven Plasma Wakefield Acceleration in AWAKE
    Proton Driven Plasma Article submitted to journal Wakefield Acceleration in Subject Areas: AWAKE Plasma Wakefield Acceleration, 1 1 Proton Driven, Electron Acceleration E. Gschwendtner , M. Turner , **Author List Continues Next Page** Keywords: AWAKE, Plasma Wakefield Acceleration, Seeded Self Modulation In this article, we briefly summarize the experiments Author for correspondence: performed during the first Run of the Advanced Insert corresponding author name Wakefield Experiment, AWAKE, at CERN (European e-mail: [email protected] Organization for Nuclear Research). The final goal of AWAKE Run 1 (2013 - 2018) was to demonstrate that 10-20 MeV electrons can be accelerated to GeV- energies in a plasma wakefield driven by a highly- relativistic self-modulated proton bunch. We describe the experiment, outline the measurement concept and present first results. Last, we outline our plans for the future. 1 Continued Author List 2 E. Adli2,A. Ahuja1,O. Apsimon3;4,R. Apsimon3;4, A.-M. Bachmann1;5;6,F. Batsch1;5;6 C. Bracco1,F. Braunmüller5,S. Burger1,G. Burt7;4, B. Buttenschön8,A. Caldwell5,J. Chappell9, E. Chevallay1,M. Chung10,D. Cooke9,H. Damerau1, L.H. Deubner11,A. Dexter7;4,S. Doebert1, J. Farmer12, V.N. Fedosseev1,R. Fiorito13;4,R.A. Fonseca14,L. Garolfi1,S. Gessner1, B. Goddard1, I. Gorgisyan1,A.A. Gorn15;16,E. Granados1,O. Grulke8;17, A. Hartin9,A. Helm18, J.R. Henderson7;4,M. Hüther5, M. Ibison13;4,S. Jolly9,F. Keeble9,M.D. Kelisani1, S.-Y. Kim10, F. Kraus11,M. Krupa1, T. Lefevre1,Y. Li3;4,S. Liu19,N. Lopes18,K.V. Lotov15;16, M. Martyanov5, S.
    [Show full text]
  • CERN to Seek Answers to Such Fundamental 1957, Was CERN’S First Accelerator
    What is the nature of our universe? What is it ----------------------------------------- DAY 1 -------- made of? Scientists from around the world go to The 600 MeV Synchrocyclotron (SC), built in CERN to seek answers to such fundamental 1957, was CERN’s first accelerator. It provided questions using particle accelerators and pushing beams for CERN’s first experiments in particle and nuclear the limits of technology. physics. In 1964, this machine started to concentrate on nuclear physics alone, leaving particle physics to the newer During February 2019, I was given a once in a lifetime and more powerful Proton Synchrotron. opportunity to be part of The Maltese Teacher Programme at CERN, which introduced me, as one of the participants, to cutting-edge particle physics through lectures, on-site visits, exhibitions, and hands-on workshops. Why do they do all this? The main objective of these type of visits is to bring modern science into the classroom. Through this report, my purpose is to give an insight of what goes on at CERN as well as share my experience with you students, colleagues, as well as the general public. The SC became a remarkably long-lived machine. In 1967, it started supplying beams for a dedicated radioactive-ion-beam facility called ISOLDE, which still carries out research ranging from pure What does “CERN” stand for? At an nuclear physics to astrophysics and medical physics. In 1990, intergovernmental meeting of UNESCO in Paris in ISOLDE was transferred to the Proton Synchrotron Booster, and the SC closed down after 33 years of service. December 1951, the first resolution concerning the establishment of a European Council for Nuclear Research SM18 is CERN’s main facility for testing large and heavy (in French Conseil Européen pour la Recherche Nucléaire) superconducting magnets at liquid helium temperatures.
    [Show full text]
  • Status in 2020 and Request for Beamtime in 2021 for CERN NA63
    EUROPEAN ORGANIZATION FOR NUCLEAR RESEARCH June 2nd 2020 Status in 2020 and request for beamtime in 2021 for CERN NA63 C.F. Nielsen, M.B. Sørensen, A.H. Sørensen and U.I. Uggerhøj Department of Physics and Astronomy, Aarhus University, Denmark T.N. Wistisen and A. Di Piazza Max Planck Institute for Nuclear Physics, Heidelberg, Germany R. Holtzapple California Polytechnic State University, San Luis Obispo, USA NA63 Abstract In the NA63 experiment of April 2018 reliable data was taken for 40 and 80 GeV electrons and positrons aligned to the h100i axis of a diamond crystal of thickness 1.5 mm, as well as for 40 and 80 GeV electrons on a 1.0 mm thick diamond aligned to the h100i axis. A paper has been submitted to Phys. Rev. D, and has received favourable referee comments. For the 2017 data, a paper has been published in Phys. Rev. Research in 2019, and our experimental findings have inspired another paper published in Phys. Rev. Lett. For the year 2021 we request 2 weeks of beamtime in the SPS H4 to do a measurement of trident production, e− → e−e+e−, in strong crystalline fields. This process is closely related to the production of muon pairs, e− → e−µ+µ−, and single crystals may prove to be an attractive source to obtain muons of high intensity and small emittance, as required for a muon collider. The trident results obtained in 2009, and published in 2010, are strongly at odds with theory (factor 3-4 discrepancy). Since then we have acquired and have been using MIMOSA-26 position-sensitive detectors with a resolution about a factor 40 higher than the drift chambers used in 2009, and now with true multi-hit capability, a significant advantage when looking for trident events.
    [Show full text]
  • Arxiv:2001.07837V2 [Hep-Ex] 4 Jul 2020 Scale Funding Will Be Requested at Different Stages Across the Globe
    Brazilian Participation in the Next-Generation Collider Experiments W. L. Aldá Júniora C. A. Bernardesb D. De Jesus Damiãoa M. Donadellic D. E. Martinsd G. Gil da Silveirae;a C. Henself H. Malbouissona A. Massafferrif E. M. da Costaa C. Mora Herreraa I. Nastevad M. Rangeld P. Rebello Telesa T. R. F. P. Tomeib A. Vilela Pereiraa aDepartamento de Física Nuclear e Altas Energias, Universidade do Estado do Rio de Janeiro (UERJ), Rua São Francisco Xavier, 524, CEP 20550-900, Rio de Janeiro, Brazil bUniversidade Estadual Paulista (Unesp), Núcleo de Computação Científica Rua Dr. Bento Teobaldo Ferraz, 271, 01140-070, Sao Paulo, Brazil cInstituto de Física, Universidade de São Paulo (USP), Rua do Matão, 1371, CEP 05508-090, São Paulo, Brazil dUniversidade Federal do Rio de Janeiro (UFRJ), Instituto de Física, Caixa Postal 68528, 21941-972 Rio de Janeiro, Brazil eInstituto de Física, Universidade Federal do Rio Grande do Sul , Av. Bento Gonçalves, 9550, CEP 91501-970, Caixa Postal 15051, Porto Alegre, Brazil f Centro Brasileiro de Pesquisas Físicas (CBPF), Rua Dr. Xavier Sigaud, 150, CEP 22290-180 Rio de Janeiro, RJ, Brazil E-mail: [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected], [email protected] Abstract: This proposal concerns the participation of the Brazilian High-Energy Physics community in the next-generation collider experiments.
    [Show full text]
  • From Precision Physics to the Energy Frontier with the Compact Linear Collider
    PERSPECTIVE | FOCUS https://doi.org/10.1038/s41567-020-0834-8PERSPECTIVE | FOCUS From precision physics to the energy frontier with the Compact Linear Collider Eva Sicking ✉ and Rickard Ström The Compact Linear Collider (CLIC) is a proposed high-luminosity collider that would collide electrons with their antiparticles, positrons, at energies ranging from a few hundred giga-electronvolts to a few tera-electronvolts. By covering a large energy range and by ultimately reaching collision energies in the multi-tera-electronvolts range, scientists at CLIC aim to improve the understanding of nature’s fundamental building blocks and to discover new particles or other physics phenomena. CLIC is an international project hosted by CERN with 75 institutes worldwide participating in the accelerator, detector and physics stud- ies. If commissioned, the first electron–positron collisions at CLIC are expected around 2035, following the high-luminosity phase of the Large Hadron Collider at CERN. Here we survey the principal merits of CLIC, and examine the opportunities that arise as a result of its design. We argue that CLIC represents an attractive proposition for the next-generation particle col- lider by combining an innovative accelerator technology, a realistic delivery timescale, and a physics programme that is highly complementary to existing accelerators, reaching uncharted territory. he discovery of the Higgs boson at the Large Hadron Collider to a lower event rate. These characteristics and the low duty cycle (LHC) in 20121,2 was an important milestone in high-energy of linear colliders make a trigger-less detector readout possible at Tphysics. It completes a puzzle that scientists have been work- CLIC.
    [Show full text]
  • The AWAKE Acceleration Scheme for New Particle Physics Experiments at CERN
    AWAKE++: the AWAKE Acceleration Scheme for New Particle Physics Experiments at CERN W. Bartmann1, A. Caldwell2, M. Calviani1, J. Chappell3, P. Crivelli4, H. Damerau1, E. Depero4, S. Doebert1, J. Gall1, S. Gninenko5, B. Goddard1, D. Grenier1, E. Gschwendtner*1, Ch. Hessler1, A. Hartin3, F. Keeble3, J. Osborne1, A. Pardons1, A. Petrenko1, A. Scaachi3, and M. Wing3 1CERN, Geneva, Switzerland 2Max Planck Institute for Physics, Munich, Germany 3University College London, London, UK 4ETH Zürich, Switzerland 5INR Moscow, Russia 1 Abstract The AWAKE experiment reached all planned milestones during Run 1 (2016-18), notably the demon- stration of strong plasma wakes generated by proton beams and the acceleration of externally injected electrons to multi-GeV energy levels in the proton driven plasma wakefields. During Run 2 (2021 - 2024) AWAKE aims to demonstrate the scalability and the acceleration of elec- trons to high energies while maintaining the beam quality. Within the Physics Beyond Colliders (PBC) study AWAKE++ has explored the feasibility of the AWAKE acceleration scheme for new particle physics experiments at CERN. Assuming continued success of the AWAKE program, AWAKE will be in the position to use the AWAKE scheme for particle physics ap- plications such as fixed target experiments for dark photon searches and also for future electron-proton or electron-ion colliders. With strong support from the accelerator and high energy physics community, these experiments could be installed during CERN LS3; the integration and beam line design show the feasibility of a fixed target experiment in the AWAKE facility, downstream of the AWAKE experiment in the former CNGS area. The expected electrons on target for fixed target experiments exceeds the electrons on target by three to four orders of magnitude with respect to the current NA64 experiment, making it a very promising experiment in the search for new physics.
    [Show full text]
  • Beam–Material Interactions
    Beam–Material Interactions N.V. Mokhov1 and F. Cerutti2 1Fermilab, Batavia, IL 60510, USA 2CERN, Geneva, Switzerland Abstract This paper is motivated by the growing importance of better understanding of the phenomena and consequences of high-intensity energetic particle beam interactions with accelerator, generic target, and detector components. It reviews the principal physical processes of fast-particle interactions with matter, effects in materials under irradiation, materials response, related to component lifetime and performance, simulation techniques, and methods of mitigating the impact of radiation on the components and environment in challenging current and future applications. Keywords Particle physics simulation; material irradiation effects; accelerator design. 1 Introduction The next generation of medium- and high-energy accelerators for megawatt proton, electron, and heavy- ion beams moves us into a completely new domain of extreme energy deposition density up to 0.1 MJ/g and power density up to 1 TW/g in beam interactions with matter [1, 2]. The consequences of controlled and uncontrolled impacts of such high-intensity beams on components of accelerators, beamlines, target stations, beam collimators and absorbers, detectors, shielding, and the environment can range from minor to catastrophic. Challenges also arise from the increasing complexity of accelerators and experimental set-ups, as well as from design, engineering, and performance constraints. All these factors put unprecedented requirements on the accuracy of particle production predictions, the capability and reliability of the codes used in planning new accelerator facilities and experiments, the design of machine, target, and collimation systems, new materials and technologies, detectors, and radiation shielding and the minimization of radiation impact on the environment.
    [Show full text]
  • Event Recorded by ATLAS When the LHC's Beam 2 Reached Closed
    A ‘beam splash’ event recorded by ATLAS when the LHC’s beam 2 reached closed collimators near the detector on 20 November. 12 | CERN “The imminent start-up of the LHC is an event that excites everyone who has an interest in the fundamental physics of the Universe.” Kaname Ikeda, ITER Director-General, CERN Bulletin, 19 October 2009. Physics and Experiments The moment that particle physicists around the world had been The EMCal is an upgrade for ALICE, having received full waiting for finally arrived on 20 November 2009 when protons approval and construction funds only in early 2008. It will detect circulated again round the LHC. Over the following days, the high-energy photons and neutral pions, as well as the neutral machine passed a number of milestones, from the first collisions component of ‘jets’ of particles as they emerge from quark� at 450 GeV per beam to collisions at a total energy of 2.36 TeV gluon plasma formed in collisions between heavy ions; most — a world record. At the same time, the LHC experiments importantly, it will provide the means to select these events on began to collect data, allowing the collaborations to calibrate line. The EMCal is basically a matrix of scintillator and lead, detectors and assess their performance prior to the real attack which is contained in ‘supermodules’ that weigh about eight tonnes. It will consist of ten full supermodules and two partial on high-energy physics in 2010. supermodules. The repairs to the LHC and subsequent consolidation work For the ATLAS Collaboration, crucial repair work included following the incident in September 2008 took approximately modifications to the cooling system for the inner detector.
    [Show full text]
  • Mayda M. VELASCO Northwestern University, Dept. of Physics And
    Mayda M. VELASCO Northwestern University, Dept. of Physics and Astronomy 2145 Sheridan Road, Evanston, IL 60208, USA Phone: Work: +1 847 467 7099 Cell: +1 847 571 3461 E-mail: [email protected] Last Updated: May 2016 Research Interest { High Energy Experimental Elementary Particle Physics: Work toward the understanding of fundamental interactions and its important role in: (a) solving the problem of CP violation in the Universe { Why is there more matter than anti- matter?; (b) explaning how mass is generated { Higgs mechanism and (c) finding the particle nature of Dark-Matter, if any... The required \new" physics phenomena is accessible at the Large Hadron Collider (LHC) at the European Organization for Nuclear Research (CERN). I am an active member of the Compact Muon Solenoid (CMS) collaboration already collect- ing data at the LHC, that led to the discovery of the Higgs boson or \God particle" in 2012. Education: • Ph.D. 1995: Northwestern University (NU) Experimental Particle Physics • 1995: Sicily, Italy ERICE: Spin Structure of Nucleon • 1994: Sorento, Italy CERN Summer School • B.S. 1988: University of Puerto Rico (UPR) Physics (Major) and Math (Minor) Rio Piedras Campus Fellowships and Honors: • 2015: NU, The Graduate School (TGS) Dean's Faculty Award for Diversity. • 2008-09: Paid leave of absence sponsored by US Department of Energy (DOE). • 2002-04: Sloan Research Fellow from Sloan Foundation. • 2002-03: Woodrow Wilson Fellow from Mellon Foundation. • 1999: CERN Achievement Award { Post-doctoral. • 1996-98: CERN Fellowship with Experimental Physics Division { Post-doctoral. • 1989-1995: Fermi National Accelerator Laboratory(FNAL)/URA Fellow { Doctoral.
    [Show full text]
  • AWAKE! Allen Caldwell Even Larger Accelerators ?
    Swapan Chattopadhyay Symposium April 30, 2021 AWAKE! Allen Caldwell Even larger Accelerators ? Energy limit of circular proton collider given by magnetic field strength. P B R / · Energy gain relies in large part on magnet development Linear Electron Collider or Muon Collider? proton P P Leptons preferred: Collide point particles rather than complex objects But, charged particles radiate energy when accelerated. Power α (E/m)4 Need linear electron accelerator or m large (muon 200 heavier than electron) A plasma: collection of free positive and negative charges (ions and electrons). Material is already broken down. A plasma can therefore sustain very high fields. C. Joshi, UCLA E. Adli, Oslo An intense particle beam, or intense laser beam, can be used to drive the plasma electrons. Plasma frequency depends only on density: Ideas of ~100 GV/m electric fields in plasma, using 1018 W/cm2 lasers: 1979 T.Tajima and J.M.Dawson (UCLA), Laser Electron Accelerator, Phys. Rev. Lett. 43, 267–270 (1979). Using partice beams as drivers: P. Chen et al. Phys. Rev. Lett. 54, 693–696 (1985) Energy Budget: Introduction Witness: Staging Concepts 1010 particles @ 1 TeV ≈ few kJ Drivers: PW lasers today, ~40 J/Pulse FACET (e beam, SLAC), 30J/bunch SPS@CERN 20kJ/bunch Leemans & Esarey, Phys. Today 62 #3 (2009) LHC@CERN 300 kJ/bunch Dephasing 1 LHC driven stage SPS: ~100m, LHC: ~few km E. Adli et al. arXiv:1308.1145,2013 FCC: ~ 1<latexit sha1_base64="TR2ZhSl5+Ed6CqWViBcx81dMBV0=">AAAB7XicbZBNS8NAEIYn9avWr6pHL4tF8FQSEeyx4MVjBfsBbSib7aZdu9mE3YkQQv+DFw+KePX/ePPfuG1z0NYXFh7emWFn3iCRwqDrfjuljc2t7Z3ybmVv/+DwqHp80jFxqhlvs1jGuhdQw6VQvI0CJe8lmtMokLwbTG/n9e4T10bE6gGzhPsRHSsRCkbRWp2BUCFmw2rNrbsLkXXwCqhBodaw+jUYxSyNuEImqTF9z03Qz6lGwSSfVQap4QllUzrmfYuKRtz4+WLbGbmwzoiEsbZPIVm4vydyGhmTRYHtjChOzGptbv5X66cYNvxcqCRFrtjyozCVBGMyP52MhOYMZWaBMi3sroRNqKYMbUAVG4K3evI6dK7qnuX761qzUcRRhjM4h0vw4AaacActaAODR3iGV3hzYufFeXc+lq0lp5g5hT9yPn8Avy+PMg==</latexit> A. Caldwell and K. V. Lotov, Phys.
    [Show full text]