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Activities in ALICE

Activities in ALICE. Daicui Zhou (for the Chinese Team) Brief Review on High Energy Heavy-Ion Physics in China Activities in ALICE Further Plan & Expectations Summary. The Goals of High Energy Heavy-Ion Collisions.

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Activities in ALICE

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  1. Activities in ALICE Daicui Zhou (for the Chinese Team) Brief Review on High Energy Heavy-Ion Physics in China Activities in ALICE Further Plan & Expectations Summary Workshop on China-CERN Cooperation Daicui Zhou

  2. The Goals of High Energy Heavy-Ion Collisions • To search for a new form of matter － QGP (deconfinement and chiral symmetry restoration) • To explore the phase diagram of QCD matter • New physics at TeV energies, e.g. CGC, exotic particles, etc. • To give indication to the origin and evolution of the universe Workshop on China-CERN Cooperation Daicui Zhou

  3. Brief Review on Chinese Participation in High Energy Heavy-Ion Experiments • AGS/SPS/JINR programs (1986-2000): s=1.9GeV~17GeV • EMU01(1986): 3 Institutes, (IHEP, SXNU, CCNU) • E815(1986): 3 Institutes (IHEP, SXNU, CCNU) • EMU12 (1991): 4 Inst., 20 people (IHEP, Hunan U., SXNU, CCNU) • E863 (1990): (CCNU) • NA49 (1996-1999) (CCNU) • RHIC program (1999-)s=62.4GeV~200GeV • PHENIX: 1 Institute, ~ 5 people (CIAE, PKU) • STAR: 6 Institutes, ~ 50 people (USTC, Tsinghua U,. SINR, IHEP, CCNU, IMP Lanzhou) (MRPC-TOF detector) • LHC program (1993-) s=5.5TeV • ALICE : 3 Institutes, ~ 30 people (CIAE, CCNU, HUST) (Photon Spectrometer) • In addition, as individual there are many people worked or working on experiments such as: • NA50, NA60, PHENIX, BRAHMS Workshop on China-CERN Cooperation Daicui Zhou

  4. Activities in ALICE Workshop on China-CERN Cooperation Daicui Zhou

  5. Research Activities and Achievements • 1999-2001R&D PIN-Diodes (successfully passed the beam test) • 1999-2002 R&D PHOSMechanics and production scheme • 2002-2003 DAQ system for PHOS beam test • 2002-2004 R&D Preamplifier • 2004 PC Farm (26 nodes, 2.8GHz double CPUs,7TBytes) • 2002-2005 PHOS FEE (design, layout, manufacturing, testing in Wuhan and CERN for 12 FEEs ) • 1995-2005 MC study on ALICE/PHOS (Punch-through Effect, PHOS PID, Trigger Efficiency, 0 reconstruction, Di-muon invariant mass spectrum, etc.) Workshop on China-CERN Cooperation Daicui Zhou

  6. PIN-Diodes in China R&D (CIAE) 17x17mm2 , high quantum efficiency, low current leakage Workshop on China-CERN Cooperation Daicui Zhou

  7. PIN specification Comparison Workshop on China-CERN Cooperation Daicui Zhou

  8. FEE Requirements • Large energy coverage : 100MeV-100GeV/c • High energy resolution at low energy region • High precision APD bias voltage regulation • TOF resolution:  1ns • Trigger input to ALICE trigger system within 800 ns Workshop on China-CERN Cooperation Daicui Zhou

  9. PHOS FEE Configuration (1) Aug.2002, Design in HUST & CCNU, Oslo Workshop on China-CERN Cooperation Daicui Zhou

  10. ALICE DDL (optical) DAQ PC EVENT DATA Ethernet DCS CONTROL PWO crystals PHOS L0/L1 ALICE Trigger System Optical links, coax ALICE L0/L1/L2/TTC Cabling PHOS power + bias 400V, 12V, 6V, 3.3V Counting room area 18-23/11,2002 CERN Delegation visited Tshinhua,CCNU and HUST,FEE meeting in Wuhan FEE scheme (2) 2002，11，17－22； 2003－2004 专家代表团参观了清华大学，在华中师大和华中科技大学详细讨论了FEE设计、确定研制方案、进行仿真、派人到CERN研制 Workshop on China-CERN Cooperation Daicui Zhou

  11. Final Version of FEE by China－CERN Workshop on China-CERN Cooperation Daicui Zhou

  12. China－CERN design Workshop on China-CERN Cooperation Daicui Zhou

  13. Shaper in FEE Workshop on China-CERN Cooperation Daicui Zhou

  14. FEE Production in China Workshop on China-CERN Cooperation Daicui Zhou

  15. FEE Production in China Workshop on China-CERN Cooperation Daicui Zhou

  16. FEE Test at CERN Workshop on China-CERN Cooperation Daicui Zhou

  17. FEE Test Results Workshop on China-CERN Cooperation Daicui Zhou

  18. 2004 Beam Test Results + 12C  0 + X  2 + X 2004 2003 (0)=4.7 MeV (0)=8.4 MeV Workshop on China-CERN Cooperation Daicui Zhou

  19. *2 *2 计算节点 DELL PE1750*13 计算节点 DELL PE1750*13 *1 7TB (146*15, 320*15) PC-Farm in CCNU/IOPP Workshop on China-CERN Cooperation Daicui Zhou

  20. DELL－1750 26 nodes, Double CPU DELL－2650 2.8GHZ Fiber: 15×146GB IDE:15x320GB RAID Capacity：7TB PC-FARM in CCNU Workshop on China-CERN Cooperation Daicui Zhou

  21. Further Plan & Expectations Workshop on China-CERN Cooperation Daicui Zhou

  22. Schedule for FEE Mass Production • 2005: • Mass production of 130 FEEs for the first ALICE/PHOS module before Oct. 2005 • A test lab. for FEE and PHOS readout chain in 2005 • 2006: • Mass production and testing of FEEs for 2nd and 3rd PHOS modules • 2007: • Mass production and testing of FEEs for 4th and 5th PHOS modules In addition, Installation and Integration of ALICE detector has being carried out by China from 2003 to 2007. Workshop on China-CERN Cooperation Daicui Zhou

  23. Non-thermal thermal Hard+thermal Pre-equili-brium photons QGP Hadron gas Initial hardscattering Interaction of hardparton with QGP 1) and2) Medium induced photon bremsstrahlung pQCD or prompt photons Photon Sources in A+A Photons in A+A Direct Photons Decay Photons Workshop on China-CERN Cooperation Daicui Zhou

  24. Research Program in Physics • Energy reconstruction and Particleidentification • 0and  spectra • Direct photon studies • Gamma-tagged jets gg ggmix p0? a=gg/ggmix p0! Workshop on China-CERN Cooperation Daicui Zhou

  25. Contribution to ALICE and Pre-Term Research Research and development of the ALICE PHOS detector has been carried out successfully with the solid supports from the Chinese government and the three institutes and universities. • R&D PIN-Diodes 160 kCHF by NSFC • PC-FARM 190 kCHF by CCNU • ALICE Detector Installation & Integration (2003-2007, 5-7 technicians) 791 kCHF by Chinese Installation team • R&D FEE 80 kCHF by CCNU & HUST • Collaboration meeting 40 kCHF by NSFC, CMoE, CCNU, CIAE &HUST • Common Funds 15 kCHF by CCNU • FEE Test Platform 50 kCHF by CCNU &HUST • Total spends 1326 kCHF Workshop on China-CERN Cooperation Daicui Zhou

  26. Expectations • MoU to be signed by the Chinese government • Further financial support from MoST, NSFC, CMoE and individual institutes to the FEE mass production, data taking and analysis • Important discoveries come out from the ALICE in the near future Workshop on China-CERN Cooperation Daicui Zhou

  27. Summary • ALICE is physics frontier in next 10-15 years which is expected to fully explore the properties of QCD matter • With the support from NSFC, CMoE and the three institutes (CCNU, CIAE and HUST), Chinese ALICE team worked actively and productively on research and development of the ALICE/PHOS • To achieve the physics goals as we supposed, further financial support from MoST, NSFC, CMoE and individual institutes are highly appreciated. • We are looking forward to new discoveries in near future by the ALICE, which is the unique experiment dedicated to heavy ion physics at LHC. Workshop on China-CERN Cooperation Daicui Zhou

  28. Thanks ! Workshop on China-CERN Cooperation Daicui Zhou

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