Experiment and Collaboration Overview TAC 98

1. Experiment and Collaboration Overview TAC 98 W.A. Zajc

2. Experiment Status • Tremendous progress since last year. • Infrastructure: ~TAC97 ~TAC98(-5 months) W.A. Zajc

3. Experiment Status • Tremendous progress since last year. • Installation: W.A. Zajc

4. Experiment Status • Tremendous progress since last year. • Construction: W.A. Zajc

5. Experiment Status • Tremendous progress since last year. • Electronics and Software: Various chain tests Cosmics in Drift Chamber prototype W.A. Zajc

6. Collaboration One view (author list from QM97 publication): W.A. Zajc

7. Collaboration Status • Current composition: • 11 Countries • 43 Institutions • ~458 Participants Participant defined as “scientists, engineers or students making a significant contribution to the PHENIX collaboration” • Recent Additions: • Weizmann Institute(24-Jun-97) • St. Petersburg State Technical University(18-Sep-97) • Universidade de Sao Paolo(25-Jun-98) • Potential Additions • Hungarian proposal • Two institutions • KFKI RMKI: • (Research Institute for Nuclear and Particle Physics of the Hungarian Academy of Sciences) • ELTE: (Eötvös University) • Several senior physicists plus students • Proposal submitted to NATO Science for Peace • Myongji University, Korea • Prof. Kwan-Sik Joo • Student (Do-Hoon Kim) already working in PHENIX muID factory W.A. Zajc

8. Geography W.A. Zajc

9. International Pad Chambers W.A. Zajc

10. Graduate Students • As of Jan-98 “census”, we had 27 Ph.D. students • 19 from outside U.S. • Numbers have since increased • Students playing major role in ~all aspects of project: • Hardware construction • Electronics testing • DAQ • Software • This summer: first sessions of “PHENIX University” • Many already have thesis topics: W.A. Zajc

11. Governance Previously • S. Nagamiya: spokesperson • Institutional Board • Executive Council Members (aka EC I):S. Aronson, H. Hamagaki, R. Hayano, K. Imai, B. Jacak, W. Kinnison, M. Marx, S. Nagamiya, F. Plasil, M. Tannenbaum, G. Young, W. Zajc, (B. Johnson, secretary) This framework and these individuals served PHENIX extremely well The Institutional Board shall deal with general issues which concern the Collaboration as a whole. Examples include the organization and the governance of the Collaboration, adoption of bylaws, admission of new institutions to the Collaboration, publication policy and issues affecting graduate students. The Executive Council shall establish scientific priorities for the experiment. It shall review and act on recommendations of the Spokesperson and/or of Project Management regarding all issues of major importance to the Collaboration. W.A. Zajc

12. Governance (cont’d) Currently • New spokesperson (22-Oct-97) • G. Young, Deputy Spokesperson • IB role, composition basically unchanged • New EC (EC II) formed in late 97: • Elected by Institutional Board:H. Hamagaki, B. Jacak, R. Seto, M. Tannenbaum • Elected by Detector Council:W. Kinnison, S. White • Spokesperson appointments:H.-A. Gustafsson, H. En’yo • Ex officio:S. Aronson, J. Haggerty, M. Marx, S. Nagamiya*, G. Young, WAZ. Deputy Project Director for Electronics* PHENIX-J liaison (B. Johnson, secretary) W.A. Zajc

13. Project Management Basic structure unchanged: Spokesperson: W.A. Zajc (Columbia) Deputy Spokesperson: G.R. Young (ORNL) Project Director: S. Aronson (BNL) Deputy Project Director: M. Marx (SUNY-SB) Deputy Project Director: J. Haggerty (BNL) Analysis Coordinator*: B. Jacak (SUNY-SB) Integration Coordinator: T. Shea (BNL) Mech. Systems Engineer: P. Kroon (BNL) PHENIX-J Liaison: S. Nagamiya (KEK) Project Administrator: R. Ernst (BNL) RHIC Liaison: B. Johnson (BNL)  For electronics; in response to review committee of same. * Discussed on following slide W.A. Zajc

14. Computing Structure • Motivation: • Computing per se is not an end goal. • Timely analysis of physics results is. • Restructure “Computing” portion of PHENIX to reflect this: • New position of “Analysis Coordinator”:(B. Jacak) • Charged with insuring that PHENIX software is available and able to produce physics • Reports to: • Spokesperson (physics, resources) • Project Director (budget, resources) • Oversees software development • Intra sub-system • Inter sub-system • Advised by Technical Committee(S. Sorensen, chair) • ONCS (C. Witzig): reports to Deputy Project Director • Other (non)-changes: • Simulation: no change C. Maguire • Offline (+ RCF): Dave Morrison W.A. Zajc

15. Physics Groups • First meetings at Ames in Jun-98 • Seven broad topics: • Global Event S. White • Hadrons H-A. Gustafsson • Thermal Photons and Pairs H. Hamagaki • Hard Scattering M. Tannenbaum • Light Vector Mesons R. Seto • Heavy Flavor W. Kinnison • Spin H. Enyo • Physics groups will develop, certify, and ready for publication all official PHENIX results • Groups have prepared overviews of their physics found in Chapter 1 of Status Book. W.A. Zajc

16. Motivation • “Natural” Evolution from • Primitives (tracks, clusters) • “Objects” ( p’s, e-’s, ET, …) • Physics (ds/dET, HBT, J/Y, …) • Our simulations and software chain now (nearly) support mock analyses • Very important that physics groups are in-place now • No delay when data available • Able to help us make physics-based decisions • Structures and practices in place for talks and publications W.A. Zajc

17. Physics Groups Seven broad topics: • Global Event S. White Multiplicity, ET, fluctuations, ZCAL, … • Hadrons H-A. Gustafsson yields, slopes, strangeness, HBT, ... • Thermal Photons and Pairs H. Hamagaki thermal radiation, ... • Hard Scattering M. Tannenbaum jet quenching, pQCD, Drell-Yan • Light Vector Mesons R. Seto r, f, w , Chiral restoration, medium effects, • Heavy Flavor W. Kinnison J/Y, Y’, U, open charm • Spin H. Enyo Gluon, sea-quark polarization, ... • Physics groups will develop, certify, and ready for publication all official PHENIX results • Specifics will be presented in Tuesday afternoon kick-off session Major emphasis: • Plan to complete • Physics groups W.A. Zajc

18. Charge • 1. What 2 or 3 papers do you expect to be the first publications from your group? (It may be useful to propose actual titles.) • Specify what • species • energies • integrated luminosity • triggers • PHENIX detector configuration(s) are expected and/or required for these papers • What topics/papers are you "deferring" by focussing on just 2 or 3? • What is the basis for your prioritization? • 2. What homework is needed in the group? • What analysis tools need to be developed? • What relevant studies can be performed in MDC I or perhaps MDC II. • What physics issues are uncertain or need further study. Can THINC help with this? • 3. Describe plans for future meetings (I would like a report from each group at each monthly PHENIX meeting.) W.A. Zajc

19. Service Groups • Service work required for participation in Physics Groups. • Statement from 27-May-98: Each physicist in a PHENIX Physics Working Group is expected to (a) actively participate in the group's activities AND (b) have an identifiable role in the various service activities (construction, installation, commissioning, data-taking, calibrating, coding, ...) required before we have physics to publish. Note: This is of course required of all PHENIX members in good standing, but will be treated as an absolute requirement for participation in the physics groups. W.A. Zajc

20. Role of Convenors • Steady-state: • Each group has two co-convenors • Two-year term • Terms are staggered by one year • Residency at or near BNL a strong plus • Convenors: • Identify and coordinate physics topics and analyses • Proposes when given analysis is ready for “outside” review • Reports on group activities to spokesman+collaboration • Interacts with Analysis Coordinator to develop/optimize PHENIX analysis framework  Attend Computing Session! • Initial state: • EC members have agreed to serve for initial two-year terms • Co-convenors to be named next year W.A. Zajc

21. RHIC Physics With PHENIX Year-1 comparison: W.A. Zajc

22. Example Light vector meson group has examined f decays to K+K- in Day-1 configuration: • Yields for • 1/2 of East arm • EMCal TOF (only) • Expected yields at end of Year-1: • Total f’s ~ 30K ~ order-of-magnitude over E859 phi data in yield with • comparable resolution • complete centrality analysis W.A. Zajc

23. An Example Measurement of hard processes: • General: an auto-generated plasma diagnostic • Specific: Prediction that dE/dx in deconfined phase ~10 x larger than normal nuclear matter • BDMPS, Nucl. Phys. B483, 265 (1997) Nucl. Phys. B484, 291 (1997) • Measure high pTp0’s, g / p 0, … Will measure • Versus centrality • With an “open” trigger W.A. Zajc

24. Year-1 Physics Mapped onto groups • Global Event • Many topics with MVD, ZCAL • Some with calorimeter • Hadrons • Most topics available • Correlated with global signatures • Thermal Photons and Pairs • Real photons depend critically on backgrounds, control of systematics • Pairs require two arms • Hard Scattering • Quenching studies • Flavor at high pT? • Light Vector Mesons • f to KK • Decays to e+e- require two arms • Heavy Flavor • ~ 1000 J/Y’s per week at 10% design L • open charm? • Spin Accelerator commissioning W.A. Zajc

25. Spin in Year-1 • PHENIX priorities: 1. Sufficient Au-Au running to • Turn-on, calibrate, commission all installed detectors • Reach 20 mb-1 integrated L (to tape) 2. Spin commissioning of one ring 3. Anything else • There is a draft proposal from RSC • Argue for 4 weeks of polarized proton studies • PHENIX response has been to endorse as per above priorities W.A. Zajc

26. Spin Statement W.A. Zajc

27. Summary • PHENIX is • A collaboration with superb • breadth • depth • commitment to completing PHENIX • An experiment with outstanding • breadth • depth • PHENIX Year-1 • Is a major component of the RHIC program • Provides results that are • Unique • Compelling W.A. Zajc

28. THINC again I. THINC should continue II. Its purpose will be as follows: 1. To educate PHENIX and bring in new theoretical ideas a. Set up repository of information b. Catalyst between experimenters and theorists c. Educate young experimentalists 2. Aid theorists who wish to • calculate PHENIX-relevant observables • be predictive 3. To work on Event Generators III. Structure 1. Membership open to all PHENIX (but you have to do work!) 2. THINC members have specific responsibilities 3. Theorists work with THINC (unofficial) 4. Chair(s) • Chosen by spokesperson (with PM+EC): R. Seto • Clearing house for speakers at collaboration meetings W.A. Zajc

29. THINC today • Has functioned as anticipated • Topical session at Collaboration Meeting: 9:00 Introduction R. Seto 9:05 Overview of Spin Workshop N.Saito 9:30 Overview of INT workshops Hadrons B. Schlei Chiral restoration/electrons S. Johnson Hard Scattering P. Stankus J/Y, parity violation M. Rosati 10:20 BREAK (20 min) 10:40 Global Variables Introduction R. Seto Global Variables I S. Vance Global Variables II B. Schlei Discussion • Good review of most of PHENIX physics program • This summer: THINC organized “PHENIX University” (aka Ph.Un.) W.A. Zajc

30. PHENIX Calendar New and improved! (I.e. simplified) • Second Thursday and Friday of every month are the core days of PHENIX weeks: • M-T: Open for sub-system meetings • Wednesday • AM: Computing, Online, parallel sessions • PM: Computing, Online joint session • Thursday • AM: Plenary, Town Meeting • PM: Physics groups reports • Friday • AM: Construction overview, DC business • PM: Service groups • Starts August 13-14th. W.A. Zajc

31. Thesis Students • Basic policy covered in PHENIX Policies for Publication and for Other Dissemination of Results (as adopted at July 1996 Collaboration Meeting) • Good policy • Further discussion as required at IB meeting W.A. Zajc