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  1. RHIC II Scope, Strategy, Plans T. Ludlam RHIC II Spin Physics Workshop Oct. 7, 2005

  2. TANDEMS Gold Ion Collisions in RHIC Beam Energy = 100 GeV/u RHIC 9 GeV/u Q = +79 BOOSTER AGS 1 MeV/u Q = +32

  3. RHIC polarized proton accelerator complex RHIC pC Polarimeters Absolute Polarimeter (H jet) BRAHMS PHOBOS Siberian Snakes Siberian Snakes PHENIX STAR Spin Rotators (longitudinal polarization) Spin flipper Spin Rotators (longitudinal polarization) Solenoid Partial Siberian Snake Pol. H- Source LINAC BOOSTER Helical Partial Siberian Snake AGS 200 MeV Polarimeter AGS Internal Polarimeter Rf Dipole AGS pC Polarimeters Strong Helical AGS Snake

  4. The Long Term Vision: RHIC as a QCD Laboratory Facility upgrades: EBIS funded for FY 06 start Detector upgrades first steps underway RHIC II luminosity upgrade -- e-cooling eRHIC

  5. The Evolution of RHIC • Processes are in place with the community to refine and articulate the sciencegoals… • RHIC II Science Workshops (like this one) • eRHIC Workshops (led by A. Deshpande) • Budget issues dominate in the short term • It is up to us to make the case in the NP community! i.e. the next Nuclear Physics Long Range Plan

  6. The Science Driving RHIC Upgrades • QCD at high temperature and density: What is the physics of superdense, strongly-interacting matter? • QCD at high energy and low x: What is the physics of strong color fields? • QCD and the structure of hadrons: What is the origin of nucleon spin? • Fundamental questions for experiment: • Properties of QGP…sQGP • Thermalization • Deconfinement • Connections with E-M plasma properties • Properties of gluonic matter • Gluon spin in the nucleon • Polarization of the quark sea • Transverse spin in QCD Key Observables Crucial measurements Compelling new insights Unique opportunities

  7. A Long Term Strategic View ~2012 2008 RHIC II Construction RHIC Luminosity & Det. upgrade Short term upgrades eRHIC Constr. Midterm Upgrades E beam + new detector RHIC Spin LHC Heavy Ion

  8. Future plans for RHIC Machine PerformanceTh. Roser • Machine goals for next few years with upgrades in progress: • Enhanced RHIC luminosity (112 bunches, b* = 1m): • Au – Au: 8  1026 cm-2 s-1 (100 GeV/nucleon) • For protons also 2  1011 protons/bunch (no IBS): • p – p: 60  1030 cm-2 s-1; 70 % polarization (100 GeV) 150  1030 cm-2 s-1; 70 % polarization (250 GeV)(luminosity averaged over store delivered to 2 IRs) • EBIS: low maintenance linac-based pre-injector; all species incl. U and pol. He3. Funded in FY 2006; Operational in 2010 • RHIC II luminosity upgrade: e-cooling, ~10  more luminosity. R&D in progress 2 achieved 6 achieved

  9. RHIC Luminosity Upgrade with Electron Cooling Gold collisions (100 GeV/n x 100 GeV/n): w/o e-cooling with e-cooling Emittance (95%) pmm 15  40 15  3 Beta function at IR [m] 1.0 1.0  0.5 Number of bunches 112 112 Bunch population [109] 1 1  0.3 Beam-beam parameter per IR 0.0016 0.004 Ave. store luminosity [1026 cm-2 s-1] 8 70 Pol. Proton Collision (250 GeV x 250 GeV): Emittance (95%) pmm 20 12 Beta function at IR [m] 1.0 0.5 Number of bunches 112 112 Bunch population [1011] 2 2 Beam-beam parameter per IR 0.007 0.012 ? Ave. store luminosity [1032 cm-2 s-1] 1.5 5.0

  10. Electron-Ion Collider at RHIC: eRHIC • 10 GeV, 0.5 A e-ring with 1/3 of RHIC circumference (similar to PEP II HER) • 10 GeV electron beam  s1/2 for e-A : 63 GeV/u; s1/2 for e-p: 100 GeV • Electron cooling required for high luminosity e-A and low energy e-p collisions • Polarized e-He3 (e-n) collisions with EBIS • Existing RHIC interaction region allows for typical asymmetric detector • Luminosity: up to 1  1033 cm2s1 per nucleon (1  1034 cm2s1 with linac – ring scheme) BNL, MITcollaboration

  11. STAR Upgrades DAQ and TPC-FEE upgrade Full Barrel Time-of-Flight system Forward Meson Spectrometer Magnet Barrel EMC End Cap EMC Beam-Beam Counters Forward po Det. TPC ZDC VPD’s (TOF Start) Photon Mult. Det. Forward triple-GEM EEMC tracker FTPC’s Integrated Tracking Upgrade Forward silicon tracker HFT pixel detector Barrel silicon tracker

  12. FCAL • Charged Particle Tracking: • Drift Chamber • Pad Chamber • Time Expansion Chamber/TRD • Cathode Strip Chambers(Mu Tracking) • Forward Muon Trigger Detector • Si Vertex Tracking Detector- Barrel (Pixel + Strips) • Si Vertex Endcap (mini-strips) • Particle ID: • Time of Flight • Ring Imaging Cerenkov Counter • TEC/TRD • Muon ID (PDT’s) • Aerogel Cerenkov Counter • Multi-Resistive Plate Chamber Time of Flight • Hadron Blind Detector • Calorimetry: • Pb Scintillator • Pb Glass • Nose Cone Calorimeter • Event Characterization: • Beam-Beam Counter • Zero Degree Calorimeter/Shower Max Detector • Forward Calorimeter • Data Acquisition: • DAQ Upgrade The Upgraded PHENIX Detector • Detector Redundancy • Fine Granularity, Mass Resolution • High Data Rate • Good Particle ID • Limited Acceptance • Charged Particle Tracking: • Drift Chamber • Pad Chamber • Time Expansion Chamber/TRD • Cathode Strip Chambers(Mu Tracking) • Particle ID: • Time of Flight • Ring Imaging Cerenkov Counter • TEC/TRD • Muon ID (PDT’s) • Aerogel Cerenkov Counter • Calorimetry: • Pb Scintillator • Pb Glass • Event Characterization: • Multiplicity Vertex Detector (Si Strip,Pad) • Beam-Beam Counter • Zero Degree Calorimeter/Shower Max Detector • Forward Calorimeter SMD/ FCAL

  13. RHIC Upgrades Overview X upgrade critical for success O upgrade significantly enhances program A. Drees 4/4/05

  14. Detector Upgrades Timeline “Mid-Term Strategy” presently under discussion High statistics Au Au; 500 GeV Spin Runs TOF and VTX construction; Muon trigger + “Small” upgrades: HBD, FMS, DAQ Mid-Term upgrades PHENIX NCC, FVTX; STAR HFT & Inner Tracker RHIC II construction RHIC Detector R&D LHC Heavy Ion Program

  15. The Output from these Workshops… RHIC II Science Whitepaper A study of physics opportunities for the coming decade Overview and conclusions-- drawn from Working Group Reports -writing committee- • What are the Critical Measurements? • What compelling new insights will these measurements bring to our understanding of fundamental issues of broad scientific interest? • Of these measurements, which ones require detector and/or collider upgrades? Which ones could be uniquely addressed at RHIC in the LHC era? • What unique scientific opportunities would be lost if RHIC were not upgraded? • The arc from RHIC to RHIC II to eRHIC

  16. Time Scale • Workshop November 11-12 at BNL: • “final” results from Working Groups • Writing Committee in place – • Lay out document with Working Group convenors • Coordinate with PAC Meeting – • preliminary reports to PAC Nov. 3-4 • Aim to complete the White Paper document by February 2006 • This puts it in play for the FY 2008 budget cycle • Starting point for 2007 Long Range Plan document