HALLA STATUS REPORT Hall A Collaboration Meeting December

HALL-A STATUS REPORT Hall A Collaboration Meeting December 3 -5, 2008 KEES DE JAGER JEFFERSON LABORATORY Our wine-and cheese gathering is in A 110 on Thursday evening, starting at 6: 00 pm. If you attend (most of you, I hope) please pay Stephanie the standard 9 $ contribution Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 1 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

Hall A Approved Proposals PAC 4 -33 • 46(+2) Experiments completed • 207/159(!) calendar days scheduled for the next 12 months • Backlog ~5. 1 years (annual average for Hall A is ~60 days at 80% funding) Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 2 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

Publications (incl. submissions) in 2008 -I • K. Slifer et al. , He-3 Spin-Dependent Cross Sections and Sum Rules, PRL 101, 022303 (2008), 0803. 2267 [nucl-ex] • P. Solvignon et al. , Quark-Hadron Duality in Neutron (3 He) Spin Structure, PRL 101, 182502 (2008), 0803. 3845 [nuclex] • R. Subedi et al. , Probing Cold Dense Nuclear Matter, Science 320, 1476(2008) • Geraud Laveissiere et al. , Virtual Compton Scattering and Neutral Pion Electroproduction in the Resonance Region up to the Deep Inelastic Scattering Region at Backward Angles, accepted by PRC • F. Cusanno et al. , High Resolution Spectroscopy 12 NL by Electroproduction, submitted to PRL • A. Shahinyan et al. , The Electromagnetic calorimeter in JLab Real Compton Scattering Experiment, submitted to NIMA, ar. Xiv: 0704. 1830 • S. Marrone et al. , Performance of the Two Aerogel Cherenkov Detectors of the JLab Hall A Hadron Spectrometer, submitted to NIMA, 0810. 4639 [physics. ins-det] • Total number of Hall A publications: Science 1, PRL+PLB 40(+1), PRC 18, NIM 15(+2). • Average time from completion of experiment to submission 20 months with 75% within 3 years. • At present 5 experiments that have not submitted a manuscript more than 3 years after completion • Hall A has been running now for 11 years, with an average publication output of 5+. Essential that more effort goes into publications, especially archival pubs • Top cited Hall A publications: 2 250+, 2 100+, 15 50+ • Please enter all publications into the JLab publication data base on submission Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 3 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

PUBLICATIONS-II Ø Archival papers promised to be completed LAST year: - E 89 -044 3 He(e, e’p) complete L/T separation - E 91 -026 deuteron A and B next spring - E 94 -010 GDH only introduction needed - E 99 -007 GEp-II - E 99 -114 WACS Ø Achievements to date: • E 89 -003 16 O(e, e’p) published • E 91 -010 HAPPEx-I published • E 91 -011 N->Δ published • E 93 -027 GEp-I published • E 94 -012 H(γ p)πo published • E 94 -104 γ n -> π-p published • E 95 -001 GM n published • E 99 -117 A 1 n published • E 93 -050 VCS accepted Ø Standard publications in draft form for too long: - Kaon electroproduction - Transverse SSA Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 4 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

Scheduled Experiments in Hall A Oct-Mar/May E 06 -010 E 07 -013 E 06 -014 E 05 -015 E 08 -005 E 05 -102 Exp Title Contact persons run Big. Bite plus polarized 3 He experiments transversity normal SSA d 2 n Brad Sawatsky 3 He SSA Todd Averett Target SSA Quasi-elastic 3 He August November E 05 -109 E 08 -011 HAPPEx-III DIS-Parity 2010 March E 06 -002 Lead Parity Xiaodong Jiang Tim Holmstrom Vince Sulkosky Doug Higinbotham Kent Paschke Xiaochao Zheng Bob Michaels Under the resent budget scenario, JLab management has decided to terminate running after Mar 6 (the completion of d 2 n) until mid August, the start of HAPPEx-III. This has the consequence that the three last polarized 3 He experiments will not run in the foreseeable future. However, it is rumoured that an omnibus bill will be approved “shortly after the Presidential inauguration”, that includes the full Presidential budget for DOE! Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 5 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

Long-Term Schedule • CEBAF will be limited to ~33 weeks of beam on target in FY 10 and following FYs as long as the budget continues as expected. This corresponds to a total of 4 months accelerator down per year, with as much as possible during the summer. • Accelerator needs 6 month down prior to the 12 Ge. V installation The long-term schedule is locked by the start of Qweak, scheduled for May 21, 2010. Qweak will run at a fixed energy/pass of 1. 165 (possibly 1. 185) Ge. V and maximum polarization, severely restricting the available energy selection, current and polarization. Also, resources, both capital and designers, will become scarcer as the 12 Ge. V activities increase. The three Hall A parity experiments can not run in parallel with Qweak, thus have to be scheduled starting mid August 2009, in the order HAPPEx-III, PVDIS and PREx. The g 2 p experiment requires a very large installation effort, optimally in parallel with the 6 month accelerator down in 2012. Only one experiment (4 He(e, e’p)) not scheduled, two (PV-DIS and D(e, e’p)) allocated less than PAC approved, but three C 3 experiments scheduled. Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 6 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

Hall A Schedule (Tentative!) Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 7 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

Draft Schedule – Hall A Year 1 of 2 Experiment Major Installation Tasks Special Accel. Requirements Scientific Rating PAC Days E 06 -010 Transversity Polarized 3 He, Big. Bite Standard A 29 E 07 -013 Normal SSA in DIS on polarized 3 He Polarized 3 He, Big. Bite Standard B 0 (parasitic) E 06 -014 d 2 n Polarized 3 He, Big. Bite Standard A 13 Polarized 3 He, Big. Bite Standard B+ 8 FY 09 E 05 -015 E 08 -005 E 05 -102 QE 3 He Polarized 3 He, Big. Bite Standard A- 15 E 05 -109 HAPPEx-III Møller and Compton Upgrade Small helicity correlations (~1/20*HAPPEx-I) A- 30 (start) Enhanced Parity Quality FY 10 E 05 -109 HAPPEx-III Completion E 08 -011 DIS-parity High-speed DAQ E 06 -002 PREX: Lead Parity Room-temperature septa Møller and Compton Upgrade 3 Experiments Dropped if FY 09@26 weeks Small helicity correlations (~1/20*HAPPEx-I) A- Complete A- 32 (23 scheduled) A 30 Requires equipment $$ early in FY 09 to meet schedule Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 8 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

Draft Schedule – Hall A Year Experiment Major Installation Tasks FY 10 E 07 -007 DVCS on the proton E 08 -025 Special Accel. Requirements 2 of 2 Scientific Rating PAC Days Pb. F 2 calorimeter A 23 DVCS on the neutron Pb. F 2 calorimeter B+ 17 DVCS on the proton and neutron Deuteron electrodisintegration near threshold Short Range Correlations via (e, e’p. N) N-Δ Coulomb quadrupole amplitude at low Q 2 Three-nucleon correlations Completion A, B+ complete B+ (C 3) A- 18 (10 scheduled) 23 B+ 3 A- 12 E 08 -027 g 2 p and the LT Spin polarizability Septa + beamline chicane DNP Polarized target A- 24 E 08 -007 GEp/GMp at very low Q 2 DNP Polarized Target B+ (C 3) 11 E 07 -012 Hypernuclear 16 O and production Septa B+ (C 3) 12 FY 11 E 07 -007 E 08 -025 E 08 -008 E 07 -006 E 08 -010 E 08 -014 Big. Bite Move Big. Bite to back of HRSR FY 12 Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 9 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

6 Ge. V Experimental Equipment: Hall A HALL A FY 08 PLAN ITEM Polarized 3 He Target Parity Instrumentation Big. Bite High-Speed Data Acq. System (On-going) Compton Polarimeter Transversity Coulomb Sum Rule DVCS Moller Polarimeter DIS Parity delta. LT General Capital (Long-Term Maintenance) Super. Big. Bite Totals - Hall A Total without manpower FY 08 actual $135 $117 $100 $185 $48 $149 $155 $111 $18 $30 $28 $0 $5 $39 -$31 $554 $540 $225 FY 09 PLAN FY 10 request FY 11 request FY 12 request FY 13 request FY 14 request $$100$1 $240 $100 $200 $400 $700 $500 $200 $500 $800 $600 $200 $300 $700 $500 $60 $80 $190 $80 $50 $700 $380 $300 $630 $930 $600 $300 $200 $100 $600 $500 Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 10 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

12 Ge. V Schedule • • • CD-3 formally approved Hall A scheduled to start commissioning in Fall 2013 Plans for large instrumentation developments starting: • PV-DIS at 12 Ge. V • Møller at 12 Ge. V • Super Big. Bite • HES/HKS in Hall A Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 11 Operated by the Jefferson Science Associates for the U. S. Department Of Energy

Summary • Hall A continues to have a very active and successful research program, but running the 6 Ge. V program will continue under serious pressure. • A draft of a long-term schedule for the 6 Ge. V program will be discussed at PAC 34 in January. Vocalize your concerns when you feel the need. • Mont, the new JLab director, is actively getting involved in the JLab research program. He is being educated on the 6 Ge. V experiments through a series of lectures to which some of you (as spokespersons) have been invited. • Finally, continue to make our achievements known to the scientific community through timely publications. Thomas Jefferson National Accelerator Facility Hall A collaboration meeting, December 3 -5, 2008, 12 Operated by the Jefferson Science Associates for the U. S. Department Of Energy