Peter Senger (GSI)
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Peter Senger (GSI)
The Compressed Baryonic Matter (CBM) experiment at FAIR
FAIR Meeting Kiev, March 18 2008
Outline:
Scientific mission Experimental and technical challenges Collaboration with Ukraine
Crab nebula: ashes of a core collapse supernova observed in 1054 by Chinese
Discovery of the first pulsar in 1968
Super-dense matter in nature: neutron star
F. Weber J.Phys. G27 (2001) 465
Extreme states of strongly interacting matter
baryons hadrons partons
Compression + heating = quark-gluon matter (pion production)
Neutron stars Early universe
The phase diagram of strongly interacting matter
World-wide experimental (and theoretical) efforts: RHIC-BNL (USA) and LHC-CERN: high temperatures CBM-FAIR: high baryon densities
Messengers from the dense phase ?
U+U 23 AGeV
Experimental challenges
up to 107 Au+Au reactions/sec
determination of (displaced) vertices with high resolution ( 50 m)
identification of leptons and hadrons
Central Au+Au collision at 25 AGeV:URQMD + GEANT4
160 p 400 -
400 + 44 K+ 13 K-
Identification of strange particles in heavy-ion collisions with Silicon Tracking
System
- -
total efficiency 10.6% 2.1% 1.0%
(uds) (dss) (sss)
central Au+Au collisions at 25 AGeV:
Silicon tracker: 2 hybrid pixel (750 µm each), 4 microstrips (400 µm each) Strips with 50 µm pitch and 5o stereo angle full event reconstruction
τ = 317 μm/c
Track reconstruction: • realistic magnetic field, • 2 MAPS, 6 micro-strip detectors• proton identification via TOF
Identification of charmed particles in heavy-ion collisions with Silicon Tracking
SystemD production cross sections from HSDHadronic background from UrQMD
τ = 123 μm/cD0
K-
π+
D0
Dipolmagnet
The Compressed Baryonic Matter Experiment
Ring ImagingCherenkovDetector
Transition Radiation Detectors Resistive
Plate Chambers(TOF)
ECAL
SiliconTrackingSystem
Tracking Detector
Muondetection System
Silicon Tracking System: 1 Mio Strips, radiation hard sensors ultra-light mechanical structure ultra-thin micro-cables, 55 cm long, 100 μm pitch
Cost estimate CBM experiment (as of 2005)
Components cost (k€)
Silicon Pixel Detector (MAPS) 1800
Silicon Microstrip Detector 9220
Ring Imaging Cherenkov Detector (RICH) 5020 - 7320
Transition Radiation Detector (TRD) 8980 - 10630
TOF Stop Detector (TOF-RPC) 7150 – 7770
Electromagn. Calorimeter (ECAL) 9498
Superconducting magnet 2832
Data acquisition and trigger (DAQ) 5500
Computing (Commissioning) 1000
Infrastructure 4950
Sum 55950 – 60520
Added in 2006: Muon detection system 11 Mio euro
Silicon detector development
Detector test board under production at GSI.
New "Technology wafer" under production at CIS: Focus on radiation hardness.
First mechanical module pre-prototypes, INR Kiev.
Cha
rge,
Str
ip ”
k”
Charge, Strip “k+1”
Detector tests at INR Kiev
Analog readout cable, first pre-prototype. SE SRTIIE Kharkov.
55 cm long, 1024 lines, 100 µm pitch55 cm long, 1024 lines, 100 µm pitch
14 µm Al on 10 µm Kapton14 µm Al on 10 µm Kapton
Scientists at GSI from Ukraine (Nat. T. Shevchenko Univ. Kiev):
Iouri Vassiliev (Postdoc) Tetyana Galatyuk (PhD student) Dmitry Kresan (PhD student) Anton Lymanets (PhD student) + sommerstudents
Collaborators in Ukraine:
Prof. Dr. Vyacheslav Borshchov State Enterprise Scientific Research Technological Institute of Instrument Engineering, Kharkov, Ukraine
Prof. Dr. Igor M. Kadenko National Taras Shevchenko University of Kiev
Prof. Dr. Valery M. Pugatch Institute for Nuclear Research, Kiev National Academy of Sciences of the Ukraine
Prof. Dr. Gennady Zinovjev Bogolyubov Institute for Theoretical Physics National Academy of Sciences of the Ukraine
Ukraine in CBM
CBM Collaboration : 51 institutions, ~ 400 membersCroatia: RBI, ZagrebSplit Univ.China:CCNU WuhanUSTC HefeiCyprus: Nikosia Univ. Czech Republic:CAS, RezTechn.Univ.PragueFrance: IPHC StrasbourgHungaria:KFKI BudapestBudapest Univ.
Russia:IHEP ProtvinoINR TroitzkITEP MoscowKRI, St. PetersburgKurchatov Inst., MoscowLHE, JINR DubnaLPP, JINR DubnaLIT, JINR DubnaMEPHI MoscowObninsk State Univ.PNPI GatchinaSINP MSU, Moscow St. Petersburg P. Univ.Ukraine: T. Shevchenko Univ. , Kiev
India:Aligarh Muslim Univ.Panjab Univ. Rajasthan Univ.Univ. of Jammu Univ. of KashmirUniv. of CalcuttaB.H. Univ. VaranasiVECC KolkataSAHA KolkataIOP BhubaneswarIlT KharagpurKorea:Korea Univ. SeoulPusan National Univ.Norway:Univ. Bergen
Supported by EU FP6
Germany: Univ. Heidelberg, P.I.Univ. Heidelberg, KIP Univ. FrankfurtUniv. Mannheim Univ. MünsterFZ DresdenGSI DarmstadtPoland:Jag. Univ. KrakowWarsaw Univ.Silesia Univ. KatowiceAGH KrakowPortugal: LIP CoimbraRomania: NIPNE Bucharest
CBM Collaboration Meeting in Strasbourg Sept. 2006
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