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Hall A Status Hall A Collaboration Meeting June 9, 2011 Robert Michaels Acting Hall A Leader Recent Activity Publications (please write archival papers.

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Presentation on theme: "Hall A Status Hall A Collaboration Meeting June 9, 2011 Robert Michaels Acting Hall A Leader Recent Activity Publications (please write archival papers."— Presentation transcript:

1 Hall A Status Hall A Collaboration Meeting June 9, 2011 Robert Michaels Acting Hall A Leader Recent Activity Publications (please write archival papers ! ) Upcoming Schedule of Experiments Procedures to Decide 12 GeV Schedule Manpower and Budget

2 In Memoriam “He will be missed by his many colleagues, friends and associates, who will remember both his kind and gentle spirit and his many contributions to nuclear physics. Arun is recognized world-wide as a leader in the study of nuclear structure …” ( JLab site-wide announcement, May 9, 2011) Arun Saha Friend, Colleague, Hall A Scientist

3 Recent (2011) Activity in Hall A Feb 22 Completed D - Threshold (B. Norum) Mar 1 Bob Michaels appointed as acting HA leader Mar 9 Completed N-Delta (N. Sparveris) Apr 13 part I of SRC triple coinc. (E. Piasetzky) Apr 15 Completed e08009 He4 (A. Saha) May 6 Review of upcoming g2p/GEp (N. Liyanage, chair) May 8 Completed x > 2 SRC inclusive (P. Solvignon-Slifer) May 13 part II of SRC triple coinc. (E. Piasetzky) May 13 begin 6 mo. Shutdown, prepare for g2p/GEp

4 12 GeV Experiments Days Major New Equipment (e.g. tritium target or SBS) GMp (elastic FF at high Q 2 ) 24 none (Moffit et.al.) A1n (neutron spin structure) 23 none (Bogdan W., et.al.) DVCS (GPDs) 100 none (Hyde et.al.) APEX (dark matter) 34 none (Bogdan W., et.al.) GMn, GEn (high Q 2 FF) 75 SBS (Bogdan W., et.al.) GEp (high Q 2 FF) 45 recoil polarimeter (Bogdan W., et.al.) in SBS (some still unrated by PAC) Continued …. Possible early running

5 12 GeV Experiments Days Major New Equipment (e.g. tritium target or SBS) SIDIS w/ SBS conditional SBS (Bogdan W., et.al.) F2n/F2p (d/u from He3/H3) 42 tritium target (Petratos, et.al.) Moller (precision electroweak) 344 Moller spectrometer (K. Kumar, et.al.) SIDIS w/ SOLID 90 SOLID spectrometer (H. Gao, et.al.) Worm-gear 35 SOLID spectrometer (J. Huang et al.) PVDIS w/SOLID 169 SOLID spectrometer (P.A. Souder) (continued) Continued …. To be graded in PAC38

6 Possible Other Experiments Major New Equipment Hypernuclear Physics new 12 GeV prop. ? HKS, new septum magnets (conditional 6 GeV) (Tang, et.al.) PREX-II 25 none (Michaels, et.al.) SRC ? none ? Polarized Proton SIDIS in preparation SOLID Other new ?

7 “Strawman” Flow-Chart for Schedule Hall A is the first to take beam in 12 GeV Era !! Commissioning Phase (Hall A = beam dump for tests and engineering runs. No physics promised, but may be possible ?) Mid- 2013 - Fall 2014 Early Experiments ? Fall - 2014 - Fall 2015 Build SBS, Stage Moller and SOLID Apparatus 12 GeV Experiments Begin (research-quality beam in FY15) Meanwhile … ~2015 SBS ExperimentsContinue to Stage Moller and SOLID ~2017+ Moller & SOLID Experiments (interleaved with other experiments, e.g. SBS. need removable apparatus)

8 How to Decide 1.Plan for Commissioning 2.Plan for Early Experiments 3.Schedule for SBS 4.Schedule for Moller and SOLID 5.Interleaving of Experiments Depends on 1.Availability of Commissioning and Research Beam 2.Funding Realities 3.Scheduling Constraints of other halls. 4.Input from Users 5.Scientific Leadership of Lab DOE deliverable: FY15

9 Input from Users Hall A Coordinating Committee to Select a Planning Committee. Suggested membership: subset of spokespersons of approved experiments. E-mail and phone meetings prior to HA Collab. Mtg. (twice per year). Chairman to report findings at HA Mtg. Recommend priorities for sequence of commissioning and early experiments. Recommend priorities for sequence and interleaving of large-project era experiments (SBS, Moller, SOLID).

10 Manpower and Budget Exercises Hall A manpower Adding an electrical engineer (power supplies) Made a young designer permanent (C. Soova) Hope to add tech(s) # of Scientist Staff to remain constant (rel. to FY2004) Hall A budget desires ( supplemental to Ops ) 4.5 M$ SBS MIE (submitted) ~0.8 M$ tritium target 0.5 M$ each for DAQ & Compton upgrades ~0.6 M$ possible Hypernuclear spectrometer 21 M$ for Moller (fairly accurate; MIE not submitted yet) 21 M$ for SOLID (very rough estimate) for Rolf, aiming towards FY18 completed In progress = 11 permanent + 2 postdocs

11 The Future of Hall A ? Time (actual years) 2011 2012 2013 2014 20152016 20172018 g2p/GEp 12 mo. Shutdown and no promised beam Early Experiments Possible Commissioning Experiments SuperBigbite Era Prepare Moller & SOLID Run Moller & SOLID

12 Parting Thoughts Hall A Leader position -- should be decided this summer (I think) An experiment planning process may be discussed by CC. Start this in ~Oct, topics for winter collab. mtg. Need to strengthen & increase the Hall A collaboration Timely publications Archival papers important ! Give seminars, colloquium, invited and contributed talks at conferences.


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