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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. - PowerPoint PPT Presentation
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Joint Institute for Nuclear ResearchJoint Institute for Nuclear ResearchInternational Intergovernmental OrganizationInternational 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
The main goal of the NICA/MPD project is an The main goal of the NICA/MPD project is an experimental study of hot and dense nuclear matter experimental study of hot and dense nuclear matter
and spin physicsand spin physics
These goals are proposed to be reached byThese 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)
• 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
The NICA Project Milestones
1. Minimum of R & D
2. Application of existing experience
3. Co-operation with experienced research centers
“The Basic Conditions” for the Project Development
4. Cost: as low as possible5. Realization time: 6 – 7 years
1. Choice of an existing building for dislocation of the collider
Consequences:
2. Collider circumference is limited by ~ 250 m
3. Luminosity: high beam intensity, multibunch regime, low beta-function at Interaction Point, …
NICA general layout
Scheme of the NICA compex
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
Nuclotron (45 Tm)injection of one
bunch of 1.1×109 ions,
acceleration up to 3.5 GeV/u max.
Collider (45 Tm)Storage of
17 bunches 1109 ions per ring at 3.5 GeV/u,
electron and/or stochastic cooling
Injector: 2×109 ions/pulse of 238U32+ at energy 6 MeV/u
IP-1 IP-2
Stripping (40%) 238U32+ 238U92+
Two superconducting
collider rings
2х17 injection
cycles
Collider general parameters
Ring circumference, [m]Ring circumference, [m] 251.5251.5
BB max max ( (UU92+), 92+), [ T [ Tm ]m ] 44.044.0
Ion kinetic energy, [GeV/amu] Ion kinetic energy, [GeV/amu] 1.0 1.0 4.36 4.36
Dipole field (max), [ T ]Dipole field (max), [ T ] 4.04.0
Long straight sectionsLong straight sections number / length, [m]number / length, [m] 2 x 48.02 x 48.0
Short straight sectionsShort straight sections number / length, [m]number / length, [m] 4 x 7.24 x 7.2
Vacuum, [ pTorr ]Vacuum, [ pTorr ] 100 100 10 10
RF harmonics RF harmonics amplitude, [kV]amplitude, [kV]
70 70
150 150
“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
PU
Kicker PU
Kicker
MPD
RF
RF
Injection channels
Beam dump
Beam dump
SPD
Spin rotator
Spin rotator
Collider structure
Energy, GeV/uEnergy, GeV/u 1.01.0 3.53.5
Rms bunch length, m Rms bunch length, m 0.30.3 0.30.3
RF harmonics / amplitude, kVRF harmonics / amplitude, kV 102 / 100102 / 100 102 / 100102 / 100
Beta function in IP, mBeta function in IP, m 0.50.5 0.50.5
Number of ions in the bunch Number of ions in the bunch 1∙101∙1099 1∙101∙1099
Rms unnormalized beam Rms unnormalized beam emmittance, emmittance, ∙∙mm mradmm mrad 3.83.8 0.3 0.3
Rms momentum spreadRms momentum spread 0.0010.001 0.0010.001
Luminosity per one IP, cmLuminosity per one IP, cm--22∙s∙s--11 0.750.75⋅⋅10102626 1.11.1⋅⋅10102727
Number of bunchesNumber of bunches 1717 1717
Incoherent tune shift Incoherent tune shift QQbetbet 0.0560.056 0.0470.047
Beam-beam parameter Beam-beam parameter 0.00260.0026 0.020.02
Collider beam parameters and luminosity
Superconducting Booster in the magnet core of The Synchrophasotron
Nuclotron
Booster
Booster
B = 25 Tm, Bmax = 1.8 T1) 3 single-turn injections 2) Storage and electron cooling
of 8×109 238U32+
3) Acceleration up to 440 MeV/u4) Extraction & stripping
SC dipoles – “Nuclotron/SIS-100 type”
2.3 m
4.0 m
The Booster Location in the yokeThe Booster Location in the yoke
of The Synchrophasotronof The Synchrophasotron
Under demounting now
Joint Institute for Nuclear Research
Institute for Nuclear Research Russian Academy of Science
Institute for High Energy Physics, Protvino
Budker Institute of Nuclear Physics, Novosibirsk
MoU with FAIR
Open for extension …
NICA – Collaboration
http://nica.jinr.ruSigned MoU with GSI in July 2008
NICA- Collaboration
Budker INP Booster RF system Booster electron
cooling Collider RF system Collider SC magnets (expertise) HV electron cooler
for collider
Electronics (?)
IHEP (Protvino) Injector Linac
FZ Jűlich (IKP) HV Electron
cooler
GSI/FAIR
SC dipoles for Booster/SIS-100
SC dipoles for Collider/SIS-300 (?)
BNL (RHIC) Stoch. Cooling
Fermilab HV Electron
cooler
Kinetic calculations (QGSM)
Phase DiagramYu.Ivanov, V.Russkikh,V.Toneev, 2005 MPD Letter of Intend
RHIC,SPS,FAIR, NICA
FAIR and NICA s =9s =9 GeVGeV
Critical points
M.Stephanov, 2006 J.Randrup, J.Cleymans, 2006
Discontinuty of A = AII λ + AII (1 - λ) originates from discontinuty of λ = VII / V
A mixed phase in different representations
λ=0
λ=1
λ=0
λ=1
0<λ<1
Critical end-point => critical end-line => critical end-boundary hypersurface !?
0<λ<1
λ=1
λ=0λ=0
λ=1
T T
μ=const. ρ=const.
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, arXiv:0710.5089
H.Stoecker, Nucl. Phys. A750 (2005) 121. One-fluid hydro, EoS with the first order phase transition.
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 E
lab ≈ 30 AGeV
RHIC, SPS, FAIR, NICA
The NICA/MPD Physics Program
Study of in-medium properties of hadrons and nuclear matter equation of state, including a search for possible signs ofdeconfinement and/or chiral symmetry restoration phase transitions and
QCD critical endpointExperimental observables:
Scanning in beam energy and centrality of excitation functions for ♣ 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
NICA general layoutMPD conceptual design
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
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 < < 1
End Cap Tracker (ECT) - Straw (radial)for tracking & p-measurement at | | > 1
Time of Flight (TOF) - RPC (+ start/stop sys.) to measure Time of Flight for charged particle identification.
Electromagnetic Calorimeter (EMC) for 0 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
Joint Institute for Nuclear Research
Institute for Nuclear Research Russian Academy of Science
Bogolyubov Institute of Theoretical Physics, NASUk
Skobeltsyn Institute of Nuclear Physics of Lomonosov MSU, RF
Institute of Apllied Physics, Academy of Science Moldova
Open for extension …
MPD – Collaboration
A consortium involving GSI, JINR & other centers for IT module development & production is at the organizational stage
http://nica.jinr.ruSigned MoU with GSI in July 2008
Spin Physics at NICA
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
0.12 0.17 EMC, 1987
Round Table Discussions
Round Table Discussion ISearching for the mixed phase of strongly interacting matter at the JINR Nuclotron July 7 - 9, 2005 http://theor.jinr.ru/meetings/2005/roundtable/
Round Table Discussion IISearching 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 IIISearching for the mixed phase of strongly interacting QCD matter at the NICA/MPD JINR (Dubna), end 2008http://nica.jinr.ru
NICA
MPD
Welcome to the collaboration!
Thank you for attention!
Experiments on DY measurements
ExperimentExperiment StatusStatus RemarksRemarks
E615E615 FinishedFinished Only unpolarized DYOnly unpolarized DY
NA10NA10 FinishedFinished Only unpolarized DYOnly unpolarized DY
E886E886 RunningRunning Only unpolarized DYOnly unpolarized DY
RHICRHIC RunningRunning Detector upgrade for DYDetector upgrade for DY measurements measurements (collider)(collider)
PAXPAX Plan > 2016Plan > 2016 Problem with Problem with polarization (collider) polarization (collider)
COMPASSCOMPASS Plan > 2010Plan > 2010 Only valenceOnly valence PDFsPDFs
J-PARCJ-PARC Plan > 2011Plan > 2011 lowlow s (60-100s (60-100 GeVGeV22),), only unpolarized only unpolarized proton beamproton beam
SPASCHARMSPASCHARM
NICANICA
Plan?Plan?
Plan 2014Plan 2014
s ~s ~ 14140 0 GeVGeV22 for unpolarized proton beam for unpolarized proton beam
s ~ 670 GeVs ~ 670 GeV22 for polarized proton beams, for polarized proton beams, high luminosity (collider)high luminosity (collider)
p
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)
Preliminary estimations of J/ statistics in comparison with DY statistics
NICA
T
NB
Round Table Discussion
Dubna, July 7-9, 2005 http://theor.jinr.ru/meetings/2005/roundtable/
www.gsi.de/documents/DOC-2004-Mar-196-2.pdf
and Gluons
RHIC,SPS,NICA,FAIR
Mixed phase
BNL’s experts visit VBLHEP: Prof. S.Ozaki and Prof. M.Harrison at the KRION test bench
VBLHEP ground
31
2.3 m
4.0 m
Parameter Project Status (March 2008)
1. Circumference, m 251.5
2. Maximum B-field, T 2.05 1.5
3. Max. magn. rigidity, Tm
45 33
4. Cycle duration, s 2.0 5.0
5. B-field ramp, T/s 2.0 1.0
6. Accelerated particles p–U, p, d p-Fe, d
7. Max. energy, GeV/u12.6(p),
4.36( 238U92+)4.1(d),
[3.0( 238U92+)]
6. Intensity, ions/cycle11011(p),
1109(A/Z = 2)
11011(p),1106(Fe24+)
2108(d)
Nuclotron Parameters