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Joint Institute for Nuclear Research

Joint Institute for Nuclear Research. International Intergovernmental Organization. N uclotron-based I on C ollider f A cility ( NICA ) at JINR: New Prospect for Heavy Ion Collisions and Spin Physics. A.N.Sissakian, A.S.Sorin.

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Joint Institute for Nuclear Research

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  1. Joint Institute for Nuclear Research International Intergovernmental Organization Nuclotron-based Ion Collider fAcility (NICA) at JINR: New Prospect for Heavy Ion Collisions and Spin Physics A.N.Sissakian, A.S.Sorin

  2. The main goal of the NICA/MPD project is an experimental study of hot and dense nuclear matter and spin physics • These goals are proposed to be reached by: • development of the Nuclotron as a basis for generation of intense beams over atomic mass range from protons to uranium and light polarized ions; • design and construction of heavy ion collider with maximum • collision energy of sNN = 9 GeV and average luminosity • 1027 cm-2 s-1 (for U92+), and polarized proton beams with energy • s ~ 25 GeV and average luminosity > 1030 cm-2 s-1 • design and construction of the MultiPurpose Detector (MPD)

  3. The NICA Project Milestones •Stage 1: years 2007 – 2009 - Upgrate and Development of the Nuclotron -Preparation of Technical Design Report of the NICA and MPD -Start prototyping of the MPD and NICA elements •Stage 2: years 2008 – 2012 -Design and Construction of NICA and MPD •Stage 3: years 2010 – 2013 - Assembling •Stage 4: year 2013 - 2014 - Commissioning

  4. “The Basic Conditions” for the Project Development • Minimum of R & D • 2. Application of existing experience • 3. Co-operation with experienced research centers 4. Cost: as low as possible 5. Realization time: 6 – 7 years Consequences: • 1. Choice of an existing building for dislocation of the collider 2. Collider circumference is limited by ~ 250 m 3. Luminosity: high beam intensity, multibunch regime, low beta-function at Interaction Point, …

  5. NICA general layout

  6. Scheme of the NICA compex Injector: 2×109 ions/pulse of 238U32+ at energy 6 MeV/u Booster (30 Tm) 2(3?) single-turn injections, storage of 3.2×109, acceleration up to 50 MeV/u, electron cooling, acceleration up to 440 MeV/u Collider (45 Tm) Storage of 17 bunches  1109 ions per ring at 3.5 GeV/u, electron and/or stochastic cooling Stripping (40%) 238U32+ 238U92+ Nuclotron (45 Tm) injection of one bunch of 1.1×109 ions, acceleration up to 3.5 GeV/u max. Two superconducting collider rings IP-2 IP-1 2х17 injection cycles

  7. Collider general parameters

  8. “Twin” magnets for NICA collider rings “Twin” dipoles “Twin” quadrupoles 1 – Cos coils, 2 – “collars”, 3 – He header, 4 – iron yoke, 5 – thermoshield, 6 – outer jacket

  9. Beam dump RF MPD RF Spin rotator Spin rotator Kicker PU PU Kicker SPD Beam dump Collider structure Injection channels

  10. Collider beam parameters and luminosity

  11. Booster Nuclotron Booster Superconducting Booster in the magnet core of The Synchrophasotron SC dipoles – “Nuclotron/SIS-100 type” • B = 25 Tm, Bmax = 1.8 T • 3 single-turn injections • 2) Storage and electron cooling of 8×109238U32+ • 3) Acceleration up to440 MeV/u • 4) Extraction & stripping

  12. 2.3 m 4.0 m The Booster Location in the yokeof The Synchrophasotron Under demounting now

  13. NICA – Collaboration • Joint Institute for Nuclear Research • Institute for Nuclear Research Russian Academy of Science • Institute for High Energy Physics, Protvino • BudkerInstituteof NuclearPhysics, Novosibirsk • MoU with FAIR • Open for extension … Signed MoU with GSI in July 2008 http://nica.jinr.ru

  14. IHEP (Protvino) InjectorLinac Budker INP • Booster RF system • Booster electron cooling • Collider RF system • Collider SC magnets (expertise) • HV electron cooler for collider • Electronics (?) FZ Jűlich (IKP) HV Electron cooler Fermilab HVElectron cooler BNL (RHIC) Stoch. Cooling GSI/FAIR SC dipoles for Booster/SIS-100 SC dipoles for Collider/SIS-300 (?) NICA- Collaboration

  15. Phase Diagram MPD Letter of Intend Yu.Ivanov, V.Russkikh,V.Toneev, 2005 Kinetic calculations (QGSM)‏ RHIC,SPS,FAIR, NICA Critical points FAIR and NICA s =9GeV M.Stephanov, 2006 J.Randrup, J.Cleymans, 2006

  16. A mixed phase in different representations λ=1 λ=1 λ=0 0<λ<1 λ=0 λ=0 λ=0 0<λ<1 λ=1 λ=1 Discontinuty of A = AII λ+ AII (1 - λ) originates from discontinuty of λ = VII / V μ=const. ρ=const. T T Critical end-point => critical end-line => critical end-boundary hypersurface !?

  17. Collapse of the directed flow (?)‏ Yu.Ivanov, E.Nikonov, W.Noerenberg, A.Shanenko, V.Toneev, Heavy Ion Physics 15 (2002) 117. Two-fluid hydro, EoS with crossover phase transition. H.Stoecker, Nucl. Phys. A750 (2005) 121. One-fluid hydro, EoS withthefirst order phase transition. H.Stoecker, arXiv:0710.5089 first not high statistics data (stars): NA49 collaboration, Phys. Rev. C68 (2003) 034903 a linear extrapolation of the AGS data indicates a collapse of the directed proton flow at Elab≈ 30 AGeV

  18. RHIC, SPS, FAIR, NICA

  19. The NICA/MPD Physics Program Study of in-medium properties of hadrons and nuclear matterequation of state, including a search for possible signs of deconfinement and/or chiral symmetry restorationphase transitionsand QCD critical endpoint Experimental observables: Scanningin beam energy and centrality ofexcitation functionsfor ♣Multiplicity and global characteristics of identified hadrons including (multi)strange particles ♣Fluctuations in multiplicity and transverse momenta ♣Directed and elliptic flows for various indentified hadrons ♣particle correlations ♣Dileptons and photons The role of strangeness in hot nuclear matter will be a central aspect of the future NICA scientific program http://nica.jinr.ru MPD conceptual design NICA general layout

  20. MPD conceptual design Inner Tracker (IT) - silicon strip detector / micromegas for tracking close to the interaction region. Barrel Tracker (BT) - TPC + Straw(for tagging) for tracking & precise momentum measurement in the region -1 < h < 1 End Cap Tracker (ECT)- Straw (radial) for tracking & p-measurement at | h | > 1 Time of Flight (TOF) - RPC(+ start/stop sys.) to measure Time of Flight for charged particle identification. Electromagnetic Calorimeter (EMC)for p0 reconstruction & electron/positron identification. Beam-Beam Counters (BBC)to define centrality (& interaction point). Zero Degree Calorimeter (ZDC)for centrality definition. MPD basic geometry Acceptances for MPD

  21. MPD – Collaboration • Joint Institute for Nuclear Research • Institute for Nuclear Research Russian Academy of Science • BogolyubovInstitute of Theoretical Physics, NASUk • Skobeltsyn InstituteofNuclear Physics of Lomonosov MSU, RF • Institute of Apllied Physics, Academy of Science Moldova • Open for extension … A consortium involving GSI, JINR & other centers for IT module development & production is at the organizational stage http://nica.jinr.ru Signed MoU with GSI in July 2008

  22. Spin Physics atNICA EMC, 1987 Preliminary topics: • Drell-Yan processes with L&T polarized p & D beams: extraction of unknown (poor known) PDF • PDFs from J/y production processes • Spin effects in baryon, meson and photon productions • Spin effects in various exclusive reactions • Diffractive processes • Cross sections, helicity amplitudes & double spin asymmetries (Krisch effect) in elastic reactions • Spectroscopy of quarkoniums with any available decay modes • Polarimetry

  23. RoundTable Discussions Welcome to the collaboration! Thank you for attention! N I C A M P D Round Table DiscussionI Searching for the mixed phase of strongly interacting matter at the JINR Nuclotron July 7 - 9, 2005http://theor.jinr.ru/meetings/2005/roundtable/ Round Table Discussion II Searching for the mixed phase of strongly interacting matter at the JINR Nuclotron:Nuclotron facility development JINR, Dubna, October 6-7,2006 http://theor.jinr.ru/meetings/2006/roundtable/ Round Table Discussion III Searching for the mixed phase of strongly interacting QCD matter at the NICA/MPD JINR (Dubna), end 2008 http://nica.jinr.ru

  24. Experiments on DY measurements

  25. Preliminary estimations of the DY processes feasibility (first stage) DY cross sections (nb) in comparison with PAX (GSI,FAIR) and possibility to increase the statistics (month of data taking)

  26. Preliminary estimations of J/Y statistics in comparison with DY statistics

  27. www.gsi.de/documents/DOC-2004-Mar-196-2.pdf T RHIC,SPS,NICA,FAIR and Gluons Round Table Discussion Dubna, July7-9, 2005 http://theor.jinr.ru/meetings/2005/roundtable/ Mixed phase NICA NB

  28. BNL’s experts visit VBLHEP: Prof. S.Ozaki and Prof. M.Harrison at the KRION test bench

  29. VBLHEP ground 31

  30. 2.3 m 4.0 m Nuclotron Parameters

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