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PHENIX ACHIEVMENTS AND CC-J W.A. Zajc Columbia University for the PHENIX Collaboration

PHENIX ACHIEVMENTS AND CC-J W.A. Zajc Columbia University for the PHENIX Collaboration. The PHENIX Collaboration. A strongly international venture: 11 nations Brazil, China, France, Germany, India, Israel, Japan, South Korea, Russia, Sweden, United States 51 institutions.

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PHENIX ACHIEVMENTS AND CC-J W.A. Zajc Columbia University for the PHENIX Collaboration

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  1. PHENIX ACHIEVMENTS AND CC-J W.A. Zajc Columbia University for the PHENIX Collaboration

  2. The PHENIX Collaboration A strongly international venture: • 11 nations Brazil, China, France, Germany, India, Israel, Japan, South Korea, Russia, Sweden, United States • 51 institutions

  3. Run-1 Configuration • Two central arms • Mechanically ~complete • Roughly half of aperture instrumented • Global detectors • Zero-degree Calorimeters (ZDCs) • Beam-Beam Counters (BBCs) • Multiplicity and Vertex Detector (MVD, engineering run)

  4. Run-1 Accomplishments • First collisions:15-Jun-00 • Last collisions: 04-Sep-00 • During this period: • Commissioned • Zero-Degree Calorimeters • Beam-Beam Counters • Multiplicity and Vertex Counter • Drift Chambers • Pad Chambers • Ring Imaging Cerenkov Counter • Time Expansion Chamber • Time-of-Flight Counters • Electromagnetic Calorimeter • Muon Identifier • Minimum Bias Triggers • Data Acquisition System • Recorded ~5M minimum bias events

  5. Run-1 Results All results are for Au-Au collisions at • Global Event Features • Transverse Energy • Charged Multiplicity • Elliptic Flow • Identified Particles • Hadrons • p, K , p  • po’s • p  p HBT • Electrons • Studied versus • Centrality • Number of participants

  6. Run-1 Results This is a partial compilation

  7. Physics Impact

  8. CC-J Contributions CC-J made an essential contribution to PHENIX’s impressive Quark Matter success: • ~50% of all PHENIX Quark Matter data reconstructed at CC-J • CC-J “routinely” provides 100K fully simulated events per week • These simulations were integral part of our analysis effort for Quark Matter • No CC-J • No systematic studies • Reduced confidence in our results

  9. Other Contributions • Regional analysis center • Archive of mDST’s • Model for other efforts (e.g., French) • Tracking of technology advances • Data storage • High-speed, long-distance networking • Data export facility at RCF

  10. Personnel • Manager: T. Ichihara • Technical Manager: Y. Watanabe • Computing Scientists: • N. Hayashi • S. Sawada • S. Yokkaichi • Scientific Coordination • H. En’yo • H. Hamagaki • BNL work • Y. Goto • A. Taketani

  11. Gratifying Success 03-Dec-98 09-Feb-01 Slide presented by WAZ at RCF review of PHENIX Computing on 03-Dec-98

  12. This Year • In Run-2, PHENIX will record a data-set equivalent to its entire Run-1 data-set EACH DAY • We will need 100-1000 times the CPU cycles required for Run-1 • Expect • Major heavy ion physics impact • Major spin physics impact • Major role for CC-J

  13. Summary • PHENIX has achieved its goals for Run-1 at RHIC. • CC-J has played a very large role in the PHENIX’s Run-1 success. • PHENIX wishes to thank all whose vision and dedication have made CC-J a reality. Special thanks to M. Ishihara

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