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Joachim Stroth Johann Wolfgang Goethe-Universitaet (IKF)

Helmholtz International Center for FAIR Perspectives for hadron and nuclear matter physics with PANDA and CBM. Joachim Stroth Johann Wolfgang Goethe-Universitaet (IKF). Hadron and Nuclear Matter Physics at FAIR. FAIR will provide intense beams of stored and cooled antiprotons,

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Joachim Stroth Johann Wolfgang Goethe-Universitaet (IKF)

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  1. Helmholtz International Center for FAIRPerspectives for hadron and nuclear matter physics with PANDA and CBM Joachim Stroth Johann Wolfgang Goethe-Universitaet (IKF)

  2. Hadron and Nuclear Matter Physics at FAIR • FAIR will provide intense beams of • stored and cooled antiprotons, • slowly extracted heavy ions, • and, due to the storage and stretcher ring concept, a • a high degree of parallel running! • Two general purpose experiments will operate at interaction rates of up to 10 MHz. • New detector concept: • Self triggered detectors/read-out systems with time stamping. • Highly-parallel read-out and real-time feature extraction for higher level event selection. CBM – Nuclear Matter Physics PANDA – Hadron Physics Joachim Stroth

  3. p Momentum [GeV/c] 0 2 4 6 8 10 12 15 ΛΛ ΣΣ ΞΞ ΩΩ DD ΛcΛc ΣcΣc ΞcΞc ΩcΩc DsDs qqqq ccqq nng,ssg ccg nng,ssg ccg ggg,gg ggg light qq π,ρ,ω,f2,K,K* cc J/ψ, ηc, χcJ 1 2 3 4 5 6 Mass [GeV/c2] The Physics Program of PANDA • Meson spectroscopy • light mesons • charmonium • exotic states • glueballs • hybrids • molecules/multiquarks • open charm • Baryon/antibaryon production • Charm in nuclei • Double L Hypernuclei • Time-like electromagneticform factors of the proton • Generalized Parton Distributions Joachim Stroth

  4. The Physics Program of CBM • Deconfinement phase transition at high B • excitation function and flow of strangeness (K, , , , ) • excitation function and flow of charm (J/ψ, ψ', D0, D, c) • melting of J/ψ and ψ' • QCD critical endpoint • excitation function of event-by-event fluctuations (K/π,...) • The equation-of-state at high B • collective flow of hadrons • particle production at threshold energies (open charm?) • Onset of chiral symmetry restoration at high B • in-medium modifications of hadrons (,, e+e-(μ+μ-), D) Joachim Stroth

  5. HIC for FAIR and Theory Development of an improved microscopic transport code Emphasis on • Coverage of all stages: • initial phase • dense phase • hadronization • Treatment of rare processes: • virtual photon emission • heavy quark propagation Strategy • Hybrid Approach • Inclusion of QGP phase Joachim Stroth

  6. HIC for FAIR and Theory Foster Lattice QCD at the Hessian Universities Emphasis on: • Hadron properties at realistic quark masses • chiral extrapolations • heavy-light systems, QCD exotica • QCD thermodynamics at finite mB • location and order of phase transition • existence/location of critical point Joachim Stroth

  7. HIC for FAIR and Experiments HIC for FAIR will provide: • Theoretical guidance for trigger strategies • Solutions for high-performance computing • Optimized algorithms for feature extraction • Simulation and design for detector R&D • Simulation and analysis frameworks for performance studies Examples: • Sophisticated event generators • UrQMD, HSD • PLUTO • High speed tracking • Secondary decay vertex reconstruction • FAIR Root Joachim Stroth

  8. High-speed Track Reconstruction • CBM will record up to one Billion tracks per second in the compact silicon tracking station. • Fast track reconstruction • Optimal control of alignment • Speedup by factor 120.000 in track reconstruction • optimized code • port to cell processor • parallel processing Joachim Stroth

  9. Concepts for Fast Feature Extraction PANDA: • Dedicated hardware based on FPGAs and ATCA backbone. • Flexible interconnection with highest bandwidth. CBM: • Commodity hardware (GPU, many core CPUs) • High level programming language supporting multi-core architecture Challenge! • How to port sophisticated algorithms developed in C++ to dedicated hardware. • cell processor • many core CPUs • graphics processing untis • FPGAs (Virtex, Lattice etc.) Intel Polaris 80 core CPU2 TFlop on a chip GeForce 9600 64 core GPU Joachim Stroth

  10. Ultra-thin Vertex Detectors • Find displaced decay vertex in an environment of hundreds of charged tracks. • Needs highest sensitivity: • ultra-thin detectors • position resolution in the micron region • Many technological challenges in system integration identical in CBM, PANDA and NUSTAR • low-mass data read-out • low-mass heat evacuation • operation in vacuum • mechanical rigidity • dynamic instabilities Joachim Stroth

  11. CBM (running the charm experiment) will produce 1 TByte data per hour! Data Volumes (Experiment) *worst case: J/Y measurement Joachim Stroth

  12. Experiment DAQ Integrated Simulation & Analysis Package GByte/s theory mass storage list mode data simulation event generator calibration exp./sim. DST track propagation(GEANT) track reconstruction PBytes based on ROOT framework digitizers higher level analysis correction for detector response data base CAD model observables Joachim Stroth

  13. Summary will • provide optimal support in computing relevant issues of detector R&D. • prepare software frame work for day one data analysis. • improve theories and models for guidance and relevant interpretation of experimental results. Joachim Stroth

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