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Peter Senger (GSI)

The Compressed Baryonic Matter (CBM) experiment at FAIR. Peter Senger (GSI). Outline:  Scientific mission  Experimental and technical challenges  Collaboration with Ukraine. FAIR Meeting Kiev, March 18 2008. Discovery of the first pulsar in 1968.

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Peter Senger (GSI)

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  1. The Compressed Baryonic Matter (CBM) experiment at FAIR Peter Senger (GSI) Outline: Scientific mission Experimental and technical challenges Collaboration with Ukraine FAIR Meeting Kiev, March 18 2008

  2. Discovery of the first pulsar in 1968 Crab nebula: ashes of a core collapse supernova observed in 1054 by Chinese

  3. Super-dense matter in nature: neutron star F. Weber J.Phys. G27 (2001) 465

  4. Extreme states of strongly interacting matter baryons hadrons partons Compression + heating = quark-gluon matter (pion production) Neutron stars Early universe

  5. 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

  6. Messengers from the dense phase ? U+U 23 AGeV

  7. Experimental challenges Central Au+Au collision at 25 AGeV: URQMD + GEANT4 160 p 400 - 400 + 44 K+ 13 K-  up to 107 Au+Au reactions/sec  determination of (displaced) vertices with high resolution ( 50 m) identification of leptons and hadrons

  8. Identification of strange particles in heavy-ion collisions with Silicon Tracking System  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 central Au+Au collisions at 25 AGeV: -- (sss) (uds) (dss) total efficiency 10.6% 2.1% 1.0%

  9. Identification of charmed particles in heavy-ion collisions with Silicon Tracking System K- D0 π+ τ = 123 μm/c • Track reconstruction: • realistic magnetic field, • 2 MAPS, 6 micro-strip detectors • proton identification via TOF D production cross sections from HSD Hadronic background from UrQMD τ = 317 μm/c D0

  10. The Compressed Baryonic Matter Experiment Transition Radiation Detectors Tracking Detector ECAL Muon detection System Resistive Plate Chambers (TOF) Ring Imaging Cherenkov Detector Silicon Tracking System Dipol magnet Silicon Tracking System:  1 Mio Strips, radiation hard sensors  ultra-light mechanical structure  ultra-thin micro-cables, 55 cm long, 100 μm pitch

  11. Cost estimate CBM experiment (as of 2005) Added in 2006: Muon detection system 11 Mio euro

  12. Silicon detector development Charge, Strip ” k” Charge, Strip “k+1” 14 µm Al on 10 µm Kapton 55 cm long, 1024 lines, 100 µm pitch New "Technology wafer" under production at CIS: Focus on radiation hardness. Detector tests at INR Kiev First mechanical module pre-prototypes, INR Kiev. Analog readout cable, first pre-prototype. SE SRTIIE Kharkov. Detector test board under production at GSI.

  13. Ukraine in CBM 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

  14. CBM Collaboration : 51 institutions, ~ 400 members Croatia: RBI, Zagreb Split Univ. China: CCNU Wuhan USTC Hefei Cyprus: Nikosia Univ. Czech Republic: CAS, Rez Techn.Univ.Prague France: IPHC Strasbourg Hungaria: KFKI Budapest Budapest Univ. Germany: Univ. Heidelberg, P.I. Univ. Heidelberg, KIP Univ. Frankfurt Univ. Mannheim Univ. Münster FZ Dresden GSI Darmstadt Poland: Jag. Univ. Krakow Warsaw Univ. Silesia Univ. Katowice AGH Krakow Portugal: LIP Coimbra Romania: NIPNE Bucharest Russia: IHEP Protvino INR Troitzk ITEP Moscow KRI, St. Petersburg Kurchatov Inst., Moscow LHE, JINR Dubna LPP, JINR Dubna LIT, JINR Dubna MEPHI Moscow Obninsk State Univ. PNPI Gatchina SINP MSU, Moscow St. Petersburg P. Univ. Ukraine: T. Shevchenko Univ. , Kiev India: Aligarh Muslim Univ. Panjab Univ. Rajasthan Univ. Univ. of Jammu Univ. of Kashmir Univ. of Calcutta B.H. Univ. Varanasi VECC Kolkata SAHA Kolkata IOP Bhubaneswar IlT Kharagpur Korea: Korea Univ. Seoul Pusan National Univ. Norway: Univ. Bergen Supported by EU FP6 CBM Collaboration Meeting in Strasbourg Sept. 2006

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