1. 30-Nov-00W.A. Zajc Outline

2. 30-Nov-00W.A. Zajc Beam Use Proposal Requested input: q Desired “beam run segments” q Physics from same q Collaboration/experiment status

3. 30-Nov-00W.A. Zajc Goals for Run-2 l Detector: Commissioning of q New sub-systems q Integration of same into the detector q Calibration of detector q Trigger studies l Experiment: “Complete” what we started in Run-1 q Characterize properties of matter created in highest energy Au-Au collisions on all time scales u ~ “All” p T scales (as permitted by luminosity)  Begin program of J/  measurements q Obtain comparison data for same in p-p collisions q Begin spin program.

4. 30-Nov-00W.A. Zajc (In priority order) 1. Au-Au running at q Commission and calibrate Run-2 detector  Accumulate 300  b -1 of Au-Au collisions 2. Commissioning of q p-p collisions at q Polarized proton collisions 3. A p-p comparison run at 200 GeV p Longitudinal polarization (> 50%) p Accumulate 3.5 pb -1 polarized-p on polarized p collisions 4. Anything else Request Summary

5. 30-Nov-00W.A. Zajc Last March: Goals for “this” Run l Detector: Commissioning of 4 All active sub-systems 4 Integration of same into a detector 4 Calibration of detector 4 (Acquisition of large, minimally biased data set for trigger studies) l Experiment: 4 Characterize properties of matter created in highest energy Au-Au collisions on all time scales ( ~ “All” p T scales) 6 Obtain comparison data for same in p-p collisions 4 Maintain progress towards a spin run in Year-2

6. 30-Nov-00W.A. Zajc Run-1 Summary l Commissioned ~11 detector sub-systems l Recorded ~5M minimum bias events l Excellent results on q Global event features q Identified hadrons q “High” p T l But: a long way to go towards realizing full PHENIX potential q New sub-systems q Increased bandwidth/triggering q Improved machine performance

7. 30-Nov-00W.A. Zajc  0 Extraction (Last March  MC)

8. 30-Nov-00W.A. Zajc  0 Extraction (NOW  DATA!)

9. 30-Nov-00W.A. Zajc  0 Spectrum (Last March  MC) Test of our ability to reconstruct  0 ’s in Au-Au events: q 20K central Au-Au events q Full simulation q Calorimeter information “only” (+BB) (That is, no charged veto from tracking) èEffects of u Detector resolution u Clustering well understood

10. 30-Nov-00W.A. Zajc  0 Spectrum (NOW  DATA!) Test of our ability to reconstruct  0 ’s in the real world: q 1700K triggers q 570K after vertex selection q Green: As presented at DNP q Blue : Current analysis q Local slope: 291  13 (stat)  41 (syst) èEffects of u Detector resolution u Clustering u Energy Scale u Normalization well understood PHENIX Preliminary

11. 30-Nov-00W.A. Zajc More from “Last” Year Highest p T electron found in sample:

12. 30-Nov-00W.A. Zajc AGS Test Beam:  + Au-Au data: charged tracks MIP peak position for 1 GeV/c tracks MIP peak position vs track momentum EmCal In Situ Calibration E/p matching for p>0.5 GeV/c tracks All tracks Electron enriched sample (using RICH)

13. 30-Nov-00W.A. Zajc Submitted for Quark Matter ‘01 See http://www.phenix.bnl.gov/phenix/WWW/forms/ info/view.html) http://www.phenix.bnl.gov/phenix/WWW/forms/ info/view.html q Physics abstracts submitted: Physics abstracts submitted: u pT spectra of identified hadrons: Julia Velkovska u Charged particle multiplicity distributions: Sasha Milov u ET: Sasha Bazilevsky u Elliptic Flow: Roy Lacey u HBT correlations: Steve Johnson u Ratios of particle yields: Hiroaki Ohnishi u Inclusive photon and pi-zero production: Gabor David u High pT correlations: Federica Messer u Electron Spectra in PHENIX: Yasuyuki Akiba u Participant scaling: Klaus Reygers q Instrumentation abstracts: Instrumentation abstracts: u Charged particle tracking (central and muon): Ed O'Brien u Calorimetry and global detectors: Sebastian White u Particle ID (central and muon): Hideki Hamagaki u Online & Computing (FEE through Offline): Martin Purschke q Submitted as posters: u S.C. Johnson: First Results on Two-Particle Correlations Determined by the PHENIX Experiment at RHIC u S. White: Calorimetry and Global Event Characterization in PHENIX u S. Adler: The PHENIX Timing System u S. Botelho: The PHENIX Time Expansion Chamber at RHIC u M. Chiu: The PHENIX Data Acquisition System u L. Ewell: The PHENIX Online Computing System u T.K. Gosh: Wavelet Analysis In Search Of Disoriented Chiral Condensate at 130 A*GeV Au + Au Collisions at RHIC u S.V. Greene: The Design and Performance of the PHENIX Pad Chambers u A.G. Hansen: The PHENIX Multiplicity Vertex Detector u A.S. Hoover: The PHENIX South Muon Tracking System u J. Lajoie: The PHENIX Muon Identifier Local Level-1 Trigger System u Y. Mao: The PHENIX Muon Identifier Subsystem u Y. Miake: Performance of the Time-of-Flight Counter in PHENIX u G.C. Mishra: The PHENIX Event Builder u P. Nilsson: The Readout System for the PHENIX Pad Chambers u I. D. Ojha: Comparison of Event Generator Predictions for the Charged Particle Multiplicity of Au+Au at 130 A*GeV Measured in the PHENIX Acceptance u T. Sakaguchi: Performance of the PHENIX Ring Imaging Cherenkov Detector u T. Sugitate: Performance of the Beam-Beam Counter in PHENIX u H. Torii: Performance of the PHENIX EM Calorimeter in PHENIX u G.R. Young: Custom Integrated Circuit Development for Front End Electronics in PHENIX

14. 30-Nov-00W.A. Zajc Year-2 Improvements l Essentially complete recovery of the “baseline” PHENIX detector q PC2 and PC3 for West Arm q Increase MVD coverage q Remaining 4 sectors of EmCal electronics (RIKEN) q Level-1 EmCal trigger (RBRC) q L1 RICH trigger, Data Collection Modules (US-J) q Remaining 2 sectors of TEC electronics (UCR + DOE) l Plus q Installation of South Muon Magnet + Tracker q Plans for bandwidth recovery u DCM’s: DOE Medium Energy u EvB : GSU q Production of North Arm tracker mechanics q Funding for North Arm tracker FEE (new French collaborators)

15. 30-Nov-00W.A. Zajc In Pictures For 2001 Run:

16. 30-Nov-00W.A. Zajc In (Real) Pictures l Muon Tracking Status q All 3 tracking stations installed q All electronics installed q Gas, HV, alignment ongoing q ON SCHEDULE l Muon Identifier Status q All panels installed and tested q Engineering run last summer q All electronics available Jan-01 q Infrastructure work ongoing q ON SCHEDULE

17. 30-Nov-00W.A. Zajc More Improvements Significant addition to PHENIX: q French/South Korea groups u LPC-Clermont, Univ. Clermont-Ferrand,CNRS-IN2P3, France. LPC-Clermont, Univ. Clermont-Ferrand,CNRS-IN2P3, France. u Kangnung National University, Kangnung 210-702, South Korea. Kangnung National University, Kangnung 210-702, South Korea. u SubaTech, EMN, Univ. de Nantes, CNRS-IN2P3, Nantes, France. SubaTech, EMN, Univ. de Nantes, CNRS-IN2P3, Nantes, France. u IPN-Orsay, Univ. Paris Sud, CNRS-IN2P3, Orsay, France. IPN-Orsay, Univ. Paris Sud, CNRS-IN2P3, Orsay, France. u LPNHE-Palaiseau, Ecole Polytechnique, CNRS-IN2P3, Palaiseau, France. LPNHE-Palaiseau, Ecole Polytechnique, CNRS-IN2P3, Palaiseau, France. u Dapnia, CEA, Saclay, France. Dapnia, CEA, Saclay, France. u Seoul National University, Seoul, South Korea. Seoul National University, Seoul, South Korea. u Cyclotron Application Laboratory, Seoul, South Korea Cyclotron Application Laboratory, Seoul, South Korea q Major responsibility for u North Muon Arm front end electronics u PHENIX CC-F (local computing center at Lyon)

18. 30-Nov-00W.A. Zajc l Assumptions: q A total period of 25 weeks for beam availability q RHIC duty factor = 50% q PHENIX duty factor = 50% q Collision region rms = 20 cm. q All running at l Au-Au segment of 17 weeks: q First 7 weeks: u RHIC: commissioning from ~10% to 100% of design luminosity u PHENIX: Commissioning, calibrating, start of data-taking q Last 10 weeks: u Running at ~100% of design luminosity (2 x 10 26 cm -2 s -1 )  300  b -1 of integrated luminosity recorded l p-p segment of 8 weeks q 2 weeks to commission collisions q 1 week to commission polarization (> ~50%) q 5 weeks of polarized running at 5 x 10 30 cm -2 s -1 q 3.5 pb -1 of integrated luminosity recorded: Run Segments

19. 30-Nov-00W.A. Zajc Physics from Requested Segments l Au-Au:  3M   K + K - decays  30K J/    +  - in South Arm  6K J/   e + e - in Central Arms q 15K (charm) e’s with p T > 2 GeV/c (central 10%)  ~ 20  0 ’s / GeV at p T = 25 GeV/c l p-p comparison data: q Measurement of same probes as in Au-Au with roughly half the statistical precision l Polarized-p on Polarized-p: q An essential start on understanding systematics in these measurements  A first look at  G

20. 30-Nov-00W.A. Zajc Au-Au Measurements l Physics reach: q An extensive program addressing all collision timescales q (This list not necessarily complete)

21. 30-Nov-00W.A. Zajc Run Planning for RHIC l Available FY01 inadequate for additional commissioning and programmatic needs of RHIC. l Colliders require extended running to q Maximize luminosity q Develop stable operations (Cf. Tevatron, HERA) l Short runs maximize end effects (very non-trivial at a cryogenic machine) l RHIC in Run-2 is a new machine èwe must “pay” the commissioning “bill” l “Solutions” that avoid p-p running delay by 1 year or more quantitative baseline comparisons l “Solutions” that do not include spin running  Delay measurement of  G by at least one year q Put at risk BNL’s primacy in this measurement q Ignore international contributions to the spin program èAll of these factors argue for combining the FY01 and FY02 run periods l N.B. 1 nominal RHIC run per 2 fiscal years is not a long term solution!

22. 30-Nov-00W.A. Zajc Plan A vs. Plan B PHENIX strongly prefers “B” q Reduced end effects q Long period of luminosity growth and data-taking q Timely spin run q Provides optimal (timing and length) shutdown for North Muon Installation

23. 30-Nov-00W.A. Zajc Year-3 and Beyond

24. 30-Nov-00W.A. Zajc Year-3: (Subject to the usual caveats about surprises and flexibility): l Heavy Ions q Fully operational muon arm + new triggers  Full exploration of J/  production versus “N binary ” ~ A(b)*A(b) via u A long run with Au-Au u A series of shorter light ion runs l p-A or d-A running l Spin Continued running to accumulate 320 pb -1 at 200 GeV Log 10 (N bina ry ) Looking Ahead

25. 30-Nov-00W.A. Zajc Possible Run Plan (Largely for ions; significant spin running each year is assumed) q Year-2: u Au+Au, crude p-p comparison run  First look at J/  production, high p T q Year-3: u High luminosity Au+Au (60%) of HI time u High luminosity light ions (40%) of HI time  Detailed examination of A*B scaling of J/  yield q Year-4: u p-d/p-p comparisons è Baseline data for rare processes q Year-5: u “Complete” p-A program with p-Au u Energy scans è Systematic mapping of parameter space

26. 30-Nov-00W.A. Zajc Summary l Proposed program q Thorough study of highest-mass, highest-energy collisions ever made q Measurement of p-p collisions to characterize baseline physics q Start on spin physics q Maximal overlap with machine development of u Stable operations u Spin running l Experiment will be ready to implement this program (detector and analysis chain) l Collaboration committed to q Safe and systematic operation of PHENIX q Production of physics data