joachim stroth johann wolfgang goethe-universitaet (ikf)
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Perspectives for hadron and nuclear matter physics with Perspectives for hadron and nuclear matter physics with PANDA and CBMPANDA and CBM
Joachim Stroth
Johann Wolfgang Goethe-Universitaet (IKF)
March 6, 2008 Joachim Stroth 2
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r 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
March 6, 2008 Joachim Stroth 3
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0 2 4 6 8 12 1510p Momentum [GeV/c]
Mass [GeV/c2]1 2 3 4 5 6
ΛΛΣΣΞΞ
ΛcΛc
ΣcΣc
ΞcΞc
ΩcΩcΩΩ DDDsDs
qqqq ccqq
nng,ssg ccg
ggg,gg
light qqπ,ρ,ω,f2,K,K*
ccJ/ψ, ηc, χcJ
nng,ssg ccg
ggg
Meson spectroscopy light mesons
charmonium
exotic states
glueballs
hybrids
molecules/multiquarks
open charm
Baryon/antibaryon production
Charm in nuclei
Double Hypernuclei
Time-like electromagneticform factors of the proton
Generalized Parton Distributions
The Physics Program of PANDA
March 6, 2008 Joachim Stroth 4
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r 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)
March 6, 2008 Joachim Stroth 5
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r HIC for FAIR and Theory
Development of an improved microscopic transport codeDevelopment 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
March 6, 2008 Joachim Stroth 6
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r HIC for FAIR and Theory
Foster Lattice QCD at the Hessian UniversitiesFoster 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 B
location and order of phase transition
existence/location of critical point
March 6, 2008 Joachim Stroth 7
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r HIC for FAIR and Experiments
HIC for FAIR will provide: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
March 6, 2008 Joachim Stroth 8
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r 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
March 6, 2008 Joachim Stroth 9
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r 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!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
March 6, 2008 Joachim Stroth 10
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r 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
March 6, 2008 Joachim Stroth 11
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r Data Volumes (Experiment)
CBM (running the charm experiment) will produce 1 TByte data per hour! CBM (running the charm experiment) will produce 1 TByte data per hour!
Reactions/s Event size
[MByte]
ThroughputDAQ [GByte/s]
Throughput to MSS[GByte/s]
ALICE10.000(250 Events/s)
80 20 1
CBM*10.000.000(continuous)
0,1 1000 1
PANDA20.000.000 (continuous)
0.008 200 0.1
*worst case: J/ measurement
March 6, 2008 Joachim Stroth 12
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mass storage
Integrated Simulation & Analysis Package
data base
list mode data
calibration
track reconstruction
higher level analysis
correction for detector response
Experiment
DAQtheory
event generator
track propagation(GEANT)
digitizers
observables
simulation
exp./sim. DST
CAD model
PBytesPBytes
GByte/sGByte/s
base
d on
RO
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on R
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March 6, 2008 Joachim Stroth 13
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r 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.
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