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Physik dichter Kernmaterie – von SPS zu FAIR Claudia Höhne, GSI Darmstadt.

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Presentation on theme: "Physik dichter Kernmaterie – von SPS zu FAIR Claudia Höhne, GSI Darmstadt."— Presentation transcript:

1 Physik dichter Kernmaterie – von SPS zu FAIR Claudia Höhne, GSI Darmstadt

2 Claudia Höhne DPG Frühjahrstagung, Bonn, März Outline: Physik dichter Kernmaterie Introduction & Motivation QCD phase diagram phase transitions, critical point region of high baryon densities! Lessons learned at SPS search for the onset of deconfinement search for the critical point study of the strongly interacting medium with medium probes CBM experiment at FAIR feasibility studies detector R&D

3 Claudia Höhne DPG Frühjahrstagung, Bonn, März Phasediagram normal matter exists in different phases depending on p,T phasediagram for hot and dense nuclear matter? crossover 1st order PT

4 Claudia Höhne DPG Frühjahrstagung, Bonn, März Phasediagram of strongly interacting matter temperature pressure 0 ~ K (center of sun ~10 7 K) quarks (quasi-)free particles, dissolved from assembly in hadrons crossover critical point 1st order PT / 0 ~ 5-10

5 Claudia Höhne DPG Frühjahrstagung, Bonn, März Phasediagram of strongly interacting matter temperature pressure 0 Big Bang & early universe neutron stars Nucleus+Nucleus collisions in lab

6 Claudia Höhne DPG Frühjahrstagung, Bonn, März Phasediagram of strongly interacting matter temperature pressure 0 Fundamental questions of QCD Equation of state of strongly interacting matter? Structure of strongly interacting matter as function of T and B ? In medium properties of hadrons as function of T and B ? address with heavy-ion collisions

7 Claudia Höhne DPG Frühjahrstagung, Bonn, März energy What do we know from experiment and theory? AGS Brookhaven 2-10 GeV/nucleon SPS CERN GeV/nucleon RHIC Brookhaven s = GeV/nucleon future: LHC since 1980s heavy ion collision experiments at AGS, SPS 2000 start of RHIC, 2009 LHC ongoing experiments at SIS exploring resonance matter SIS18 GSI < 2 GeV/nucleon freeze-out points: final hadron yields described by statistical model: T, B, V

8 Claudia Höhne DPG Frühjahrstagung, Bonn, März What do we know from experiment and theory? freeze out curve B =0 MeV: T=164 MeV partonic degrees of freedom at RHIC and top SPS first quantitative characterizations of matter detailed studies upcoming at LHC: B =0 MeV and high T evidence for onset of deconfinement at lower SPS energies (30 AGeV) freeze-out points: final hadron yields described by statistical model: T, B, V

9 Claudia Höhne DPG Frühjahrstagung, Bonn, März What do we know from experiment and theory? Lattice-QCD T C = 151 ± 3 ± 3 MeV (chiral PT) T C = 175 ± 2 ± 4 MeV (deco. PT) (Z. Fodor, JHEP 0906:088,2009. ) T C = 171 ± 10 ± 17 MeV (chiral & deco. PT) (M. Cheng et al., arXiv: ) crossover transition at μ B =0 (Z. Fodor, arXiv: hep-lat) 1. order phase transition with critical endpoint at μ B > 0 ? ? [A. Andronic et al., arXiv: ] quarkyonic phase: L. McLerran, R. Pisarski, Nucl. Phys. A 796 (2007)83

10 Claudia Höhne DPG Frühjahrstagung, Bonn, März Future experimental programs 1) exploring properties of the QGP at highest T and B =0: LHC 2) searching for structures in the QCD phase diagram at high net-baryon densities; characterization of this matter experience: field driven by experimental data!

11 Claudia Höhne DPG Frühjahrstagung, Bonn, März Limiting temperature at s NN ~ 10 GeV statistical model fit: T, B, V: temperature saturates for s NN > 10 GeV although energy density (and initial T) still increases deconfinement phase boundary reached, additional energy goes into heating the QGP occurs at the same energy at which mesons start to carry the larger part of the entropy [A. Andronic et al., Phys. Lett. B 673 (2009) 142] [H.Oeschler et al., J.Phys.G 32, 223 (2006)] s/T 3 SIS 100 SIS 300 SIS 100 SIS 300

12 Claudia Höhne DPG Frühjahrstagung, Bonn, März Structures in particle ratios statistical model: very succesful description of particle yields equilibrated hadron gas! multistrange hadrons are important – very sensitive! vicinity of phase boundary required? however: for low energies multistrange hadrons are missing! also freeze-out at phase boundary? or rescattering hadron gas? [A. Andronic et al., Phys. Lett. B 673 (2009) 142] SIS 100 SIS 300 p/ + K + / + K - / - / -

13 Claudia Höhne DPG Frühjahrstagung, Bonn, März Maximum in relative s-production HG QGP Statistical model of the early stage (SMES) [Gazdzicki, Gorenstein, Acta. Phys. Polon. B30, 2705 (1999)] [A. Andronic priv. com., analysis in Phys. Lett. B 673 (2009) 142] maximum in relative strangeness production different energy dependence than in pp details of dependence not captured by statistical hadron gas model data best described assuming a phase transition: prediction of SMES

14 Claudia Höhne DPG Frühjahrstagung, Bonn, März bag model EoS with a strong 1st order phase transition (UrQMD + hydro) Plateau in slopes of pt-distributions mixed phase: pressure and T independent of weak increase of slopes of p t -spectra behavior can only be explained assuming a phase transition [H. Petersen et al., arXiv: ] [M. Gazdzicki et al, Braz. J. Phys. 34, 322 (2004)] [L. van Hove, Phys.Lett.B 118, 138 (1982)] [M. Gorenstein et al., Phys. Lett. B 567, 175 (2003)] hydrodynamic calculation including a phase transition similar behavior in seen for other particles:, K, p,,, however: low energy data missing [NA49: Phys.Rev.C77:024903,2008]

15 Claudia Höhne DPG Frühjahrstagung, Bonn, März Search for the critical point: Event-by-event fluctuations phase transition of 2nd order at critical point: fluctuations? study of event-by-event fluctuations of mean-pt multiplicity net electric charge particle ratios experimentally difficult, many contributions can contribute no data for lower energies not conclusive [NA49: Phys.Rev.C79:044910,2009.] [STAR: Phys.Rev.Lett.103:092301,2009.]

16 Claudia Höhne DPG Frühjahrstagung, Bonn, März Exploring nuclear matter with penetrating probes p n ++ p e +, μ + e -, μ - dileptons are penetrating probes – direct radiation from the created hot and dense matter - meson vacuum lifetime 0 = 1.3 fm/c couples to the medium change of hadronic properties: "melts" close to T c and at high B connection to chiral symmetry restoration? "SPS" "FAIR" [R. Rapp, priv. com. (CBM physics book)]

17 Claudia Höhne DPG Frühjahrstagung, Bonn, März Exploring nuclear matter with penetrating probes NA60: Phys.Rev.Lett. 96 (2006) SPS: dilepton spectra measured by NA60 (µ+µ-) and CERES (e+e-) excess spectrum shows strong modification of -meson in medium calculations: H. v. Hees, R. Rapp, Nucl.Phys.A806:339,2008 excess spectrum: di-lepton radiation from the high-density phase

18 Claudia Höhne DPG Frühjahrstagung, Bonn, März Exploring nuclear matter with penetrating probes measurement of di-electron channel: access to lowest masses strength of dilepton yield at low masses is due to coupling to baryons! importance of baryon density: data at 40 show higher excess than at 158 AGeV! [CERES: Phys.Lett.B 666, 425 (2008)] [calculations: H. v. Hees, R. Rapp, Nucl.Phys.A806:339,2008 ] preliminary N*N* N * e+e+ e-e- explains C+C! HADES, arXiv: – QM09 + N -1 π Δ (1232) > > N*(1520) N -1

19 Claudia Höhne DPG Frühjahrstagung, Bonn, März Charmonium suppression charm newly produced: m c ~ 1.3 GeV ! new scale, production in initial hard scattering distribution among charmed hadrons depending on medium appealing early idea: charmonia will be dissolved in QGP suppressed yield compared to hadron gas [R. Arnaldi, NA60, QM09] NA60, preliminary, 158 AGeV J/ suppression measured difficult corrections, many open questions no good open-charm (D- meson) measurement no data at lower energies Pb+Pb In+In

20 Claudia Höhne DPG Frühjahrstagung, Bonn, März Charm propagation [HSD: O. Linnyk et al., Int.J.Mod.Phys.E17, 1367 (2008)] [SHM: A. Andronic et al., Phys. Lett. B 659 (2008) 149] Propagation of produced charm quarks in the dense phase – quark like or (pre-)hadron like? charmonium to open charm ratio as indicator – measure both! indications of collectivity? first charm measurements in A+A below 158 AGeV! aim at detailed information including phase space distributions, flow!

21 Claudia Höhne DPG Frühjahrstagung, Bonn, März Future explorations complete scan of the QCD phase diagram with modern, 2nd generation experiments on the horizon! 30A GeV RHIC beam energy scan - evolution of medium properties - turn-off of established signatures - search for CP and PT NA61 at SPS - search for CP and PT in energy- system size scan both essentially limited to high yield observables FAIR and NICA - new accelerator projects - FAIR: high intensities! rare probes!

22 Claudia Höhne DPG Frühjahrstagung, Bonn, März Highest net-baryon densities at FAIR high (net-)baryon and energy densities created in central Au+Au collisions beam energy max. / 0 max [GeV/fm 3 ] time span ~FWHM 5 AGeV61.5~ 8 fm/c 40 AGeV12> 10~ 3.5 fm/c [J. Randrup, J. Cleymans PRC74, (2006)]

23 Claudia Höhne DPG Frühjahrstagung, Bonn, März CBM: Physics topics and Observables Onset of chiral symmetry restoration at high B in-medium modifications of hadrons (,, e + e - (μ + μ - ), D) Deconfinement phase transition at high B excitation function and flow of strangeness (K,,,, ) excitation function and flow of charm (J/ψ, ψ', D 0, D, c ) charmonium suppression, sequential for J/ψ and ψ' ? The equation-of-state at high B collective flow of hadrons particle production at threshold energies (open charm) QCD critical endpoint excitation function of event-by-event fluctuations (K/π,...) Systematics & precision!! characterization of the created medium! CBM Physics Book submitted!

24 Claudia Höhne DPG Frühjahrstagung, Bonn, März Particle multiplicity branching ratio for min. bias Au+Au collisions at 25 GeV (from HSD and thermal model) SPS Pb+Pb 30 A GeV Particle multiplicities

25 Claudia Höhne DPG Frühjahrstagung, Bonn, März FAIR + HADES CBM and HADES at SIS 100 and SIS 300 systematic exploration of high baryon density matter in A+A collisions from 2 – 45 AGeV beam energy with 2nd generation experiments explore the QCD phase diagram, chiral symmetry restauration

26 Claudia Höhne DPG Frühjahrstagung, Bonn, März Module 0: SIS100 Module 1: CBM Cave, APPA hall Module 2: SFRS + R3B Module 3: Anti-proton facility Module 4: Low-E NUSTAR, NESR, FLAIR, APPA-cave Module 5: RESR HADES and CBM startversion at SIS 100

27 Claudia Höhne DPG Frühjahrstagung, Bonn, März The CBM experiment tracking, momentum determination, vertex reconstruction: radiation hard silicon pixel/strip detectors (STS) in a magnetic dipole field hadron ID: TOF (& RICH) photons, 0, : ECAL electron ID: RICH & TRD suppression 10 4 PSD for event characterization high speed DAQ and trigger rare probes! muon ID: absorber + detector layer sandwich move out absorbers for hadron runs RICH TRD TOF ECAL magnet absorber + detectors STS + MVD HK 41.1, Do 14:00, T. Galatyuk

28 Claudia Höhne DPG Frühjahrstagung, Bonn, März STS tracking – heart of CBM Challenge: high track density: 600 charged particles in 25 10MHz Task track reconstruction: 0.1 GeV/c < p GeV/c p/p ~ 1% (p=1 GeV/c) primary and secondary vertex reconstruction (resolution 50 m) V 0 track pattern recognition c = 312 m radiation hard and fast silicon pixel and strip detectors self triggered FEE high speed DAQ and trigger online track reconstruction! fast & rad. hard detectors!

29 Claudia Höhne DPG Frühjahrstagung, Bonn, März Parallelization in CBM Reconstruction ! Vector SIMDMultiThreadingNVIDIA CUDAOpenCL STS++++ MuCh++ RICH++ TRD++ Vertexing+ Open Charm Analysis+ + March October 2009 DELL Server with: Core i7/Nehalem24 Core i7/Nehalem 2x(Xeon X5550 4x2.66 GHz, 8 MB L3 cache) 36 GB DDR GB main memory NVIDIA 2x240 FPUs NVIDIA GTX 295 2x240 FPUs, 1792 MB LRB optional LRB fast event reconstruction is a must for CBM! HK 41.2, Do 14:30, I. Kisel

30 Claudia Höhne DPG Frühjahrstagung, Bonn, März CBM feasibility studies feasibility studies performed for all major channels including event reconstruction and semirealistic detector setup J/ di-electronsdi-muons ' ' c events D0D0 HK 41.3, Do 14:45, A. Lebedev HK 41.4, Do 15:00, S. Lebedev HK 41.6, Do 15:30, S. Seddiki HK 41.7, Do 15:45, I. Vassiliev

31 Claudia Höhne DPG Frühjahrstagung, Bonn, März Sensor development: double-sided micro-strips, stereo angle 15 o, pitch 60 μm 300 μm thick, bonded to ultra-thin micro-cables, radiation hardness STS in thermal enclosure Detector planes: ultra-light weight ladder structure Prototypes: full CBM sensor, ultrathin cables Development of the Silicon Tracking System (STS) HK 21.6, Di 15:30, S. Chatterji HK 57.2, Do 17:00, A. Lymanets HK 57.8, Do18:30, A. Kotynia

32 Claudia Höhne DPG Frühjahrstagung, Bonn, März Monolithic Acitive Pixel Sensors in commercial CMOS process CBM: 5 µm single point resolution Micro Vertex Detecor (MVD) Development first station 5cm downstream of target high position resolution! HK 21.4, Di 15:00, D. Doering HK 21.5, Di 15:15, S. Amar.Youcef HK 57.1, Do 16:30, M. Deveaux first demonstrator tested in beam!

33 Claudia Höhne DPG Frühjahrstagung, Bonn, März RICH – TRD – TOF development RICH and TRD detectors for electron identification large size time-of-flight detector (RPCs) for hadron identification MAPMT H8500 HK 31.2, Di 17:00, J. Eschke testbeam HK 58.3, Do 17:15, P. Reichelt HK 58.7, Do 18:15, C. Bergmann HK 48.1, Do 14:00, H. Deppe HK 48.6, Do 15:15, S. Manz HK 48.7, Do 15:30, P. Loizeau HK 58.6, Do 18:00, I. Deppner fast readout electronics double-sided TRD prototypes

34 Claudia Höhne DPG Frühjahrstagung, Bonn, März Self-triggered readout electronics self-triggered readout electronics data-push architecture trigger evaluation with online tracking on large PC farm HK 10.2, Mo 16:45, J. Gebelein HK 48.2, Do 14:15, S. Löchner HK 70.3, Fr 14:30, F. Lemke

35 Claudia Höhne DPG Frühjahrstagung, Bonn, März STS GEM RICH DABC + Go4, Slow Control Trigger S3+S4 1st system test in CBM GSI (Sep 2009) combined beam time CBM & PANDA 9 days of ~ 2 hours beam per day protons, 2.0 GeV, ~ 10 4 p/s HK 49.1, Do 14:00, S. Linev self-triggered FEE,

36 Claudia Höhne DPG Frühjahrstagung, Bonn, März – high B, moderate T: exploration of QCD phase diagram at high baryon densities at SIS 100 and SIS 300 (2-45 AGeV beam energy) together with HADES unique possibility of characterizing properties of baryon dense matter Summary Lessons from SPS: evidence for onset of deconfinement medium properties? – medium influences seen: more data, statistics missing characterization of medium needed! evidence for critical point? – not conclusive [A. Andronic et al., arXiv: ]

37 Claudia Höhne DPG Frühjahrstagung, Bonn, März CBM collaboration Russia: IHEP Protvino INR Troitzk ITEP Moscow KRI, St. Petersburg China: Tsinghua Univ., Beijing CCNU Wuhan USTC Hefei Croatia: University of Split RBI, Zagreb Portugal: LIP Coimbra Romania: NIPNE Bucharest Bucharest University Poland: Krakow Univ. Warsaw Univ. Silesia Univ. Katowice Nucl. Phys. Inst. Krakow Ukraine: INR, Kiev Shevchenko Univ., Kiev Univ. Mannheim Univ. Münster FZ Rossendorf GSI Darmstadt Univ. Wuppertal Czech Republic: CAS, Rez Techn. Univ. Prague Germany: Univ. Heidelberg, Phys. Inst. Univ. HD, Kirchhoff Inst. Univ. Frankfurt Hungaria: KFKI Budapest Eötvös Univ. Budapest India: Aligarh Muslim Univ., Aligarh IOP Bhubaneswar Panjab Univ., Chandigarh Gauhati Univ., Guwahati Univ. Rajasthan, Jaipur Univ. Jammu, Jammu IIT Kharagpur SAHA Kolkata Univ Calcutta, Kolkata VECC Kolkata Univ. Kashmir, Srinagar Banaras Hindu Univ., Varanasi Norway: Univ. Bergen Kurchatov Inst. Moscow LHE, JINR Dubna LPP, JINR Dubna Cyprus: Nikosia Univ. 56 institutions, > 400 membersSplit, Oct 2009 LIT, JINR Dubna MEPHI Moscow Obninsk State Univ. PNPI Gatchina SINP, Moscow State Univ. St. Petersburg Polytec. U. Korea: Korea Univ. Seoul Pusan National Univ. France: IPHC Strasbourg DPG 2010: 23 Voträge 6 Poster

38 Claudia Höhne DPG Frühjahrstagung, Bonn, März CBM presentations Vorträge: HK 10.2 Mo 16:45: FPGA Fault Tolerance in Particle Physics Experiments Jano Gebelein HK 21.4 Di 15:00: Annealing studies with ionizing, non-ionizing and combined radiation irradiated MAPS Dennis Doering HK 21.5 Di 15:15: In-beam performance of the MAPS demonstrator Samir Amar-Youcef, HK 21.6 Di 15:30: Development of radiation hard microstrip detectors for the CBM silicon tracking system Sudeep Chatterji HK 31.2 Di 17:00: Results from first beam tests for the development of a RICH detector for CBM Jürgen Eschke HK 41.1 Do 14:00: Exploring QCD matter at highest baryonic densities with CBM Tetyana Galatyuk HK 41.2 Do 14:30: Parallel approach to online event reconstruction in the CBM experiment Ivan Kisel HK 41.3 Do 14:45: Muon detection in the CBM experiment at FAIR Andrey Lebedev HK 41.4 Do 15:00: Electron identification capabilities of the CBM experiment at FAIR Semen Lebedev HK 41.6 Do 15:30: Feasibility of open charm elliptic flow measurement in CBM Selim Seddiki HK 41.7 Do 15:45: Open charm measurement in the CBM experiment Iouri Vassiliev HK 48.1 Do 14:00: The GSI Event-Driven TDC with 4 Channels GET4 Harald Deppe HK 48.2 Do 14:15: Radiation Studies on the UMC 180nm CMOS Process at GSI Sven Löchner, HK 48.6 Do 15:15: Design and Implementation of the Read-Out-Controller for the GET4 chips Sebastian Manz HK 48.7 Do 15:30: A demonstrator for the CBM Time Of Flight wall electronic readout chain Pierre-Alain Loizeau HK 49.1 Do 14:00: Data Acquisition Backbone Core DABC release v1.0 Sergey Linev HK 57.1 Do 16:30: Status of the CBM Micro Vertex Detector Michael Deveaux HK 57.2 Do 17:00: Beam tests with first prototypes of the CBM Silicon Tracking System Anton Lymanets HK 57.8 Do 18:30: Performance studies of the CBM Silicon Tracking System Anna Kotynia HK 58.3 Do 17:15: Study on TR-Efficiency of the CBM Transition Radiation Detector Patrick Reichelt HK 58.6 Do 18:00: A differential RPC prototype for CBM Ingo Martin Deppner HK 58.7 Do 18:15: Performance of High-Rate TRD Prototypes for CBM in Source Tests and Simulation Cyrano Bergmann HK 70.3 Fr 14:30: Time synchronization and measurements of a hierarchical DAQ network Frank Lemke Poster – HK 36 Mi 14:00: HK 36.1: Electromagnetic probes of matter under extreme conditions Elena Belolaptikova HK 36.5: Parallel Kalman filter track fit based on vector classes Igor Kulakov HK 36.6: A parallel algorithm for reconstruction of short-lived particles Maksym Zyzak HK 36.7: (Ξ0Λ)-dibaryon detectability study in the CBM experiment Iouri Vassiliev HK 36.52: Studies on MAPS being irradiated with ionizing, non-ionizing and combined radiation doses Michael Deveaux HK 36.54: Electronical and mechanical integration of the MVD Demonstrator for CBM Tobias Tischler


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