So LID Overview Jianping Chen So LID Collaboration

So. LID Overview Jian-ping Chen So. LID Collaboration Meeting April 13 -14, 2012

So. LID Experiments • So. LID: large acceptance, capable to handle high luminosity • Ideal for precision DIS (PVDIS) and SIDIS experiments • Possibility also for exclusive reactions? • Three Approved Experiments with “A” rating: • PVDIS (E 12 -10 -007), (Paul’s talk) • SIDIS: (E 12 -10 -006) and (E 12 -11 -007) Xin’s talk • Conditionally approved proposal: Proton Transversity (Kalyan’s talk) Condition: transversely polarized NH 3 target compatible with So. LID Progress: magnet design on-going • Other new ideas: • J/Psi: Temple Workshop, Xin’s talk • PV-spin structure: Seamus’ talk • Iso-vector EMC effects: Seamus’ talk

Status • Magnet: CLEO magnet, Rolf and Paul’s talks • Simulations: background (Lorenzo’s talk) baffle design (Lorenzo and Seamus’ talk) tracking (Ole’s) • GEMs: Chinese collaboration progress (Yuxiang’s talk) US side progress/R&D tests (Kondo’s talk) • Cherenkov: PMT/HBD (Simona/Tom’s talks) Full beam tests: next week? • EM calorimeters: progress (Jin/Zhiwen’s talks) R&D tests: on-going in Hall B • DAQ: progress (Alexandre’s talk) • Polarimetry • Targets: Cryotarget: coordinated design effort, G 0 as starting point Pol. 3 He: convection cell progress Pol. NH 3: new transverse magnet design

Director’s Review • Get ready for the director’s review: Identify major tasks Identify issues, working on solutions Identify weakest links, working on strengthening them • Dry run during next collaboration meeting Seeking suggestions for people as dry run reviewers

Subsystems/Responsibilities: Needs update? • Overall coordination: (J. P. Chen/H. Gao/P. Souder) • Calibration: (P. Souder/X, Qian) • Magnet/Support/Simulations (Argonne/Duke/UVa/Umass) • Magnet (JLab Engineering Div. , Argonne, P. Reimer) • Detector supporting structure (Duke, H. Gao) • General simulation (UVa, Z. Zhao/ Umass, S. Riordan) • Neutron background simulation (Syracuse, L. Zana) • Tracking (UVa/Chinese/others) • GEM detectors (UVa, N. Liyanaga, /Chinese collaboration) • Tracking software (Caltech, X. Qian/Umass, S. Riordan) • Gas Cherenkov(Temple/Duke/Stony Brook) • Light gas Cherenkov (Duke/Temple/SB, S. Malace, Z. Meziani, Tom) • Heavy Gas Cherenkov (Duke/Temple, S. Malace, Z. Meziani) • EM Calorimeter (UVa/Los Alamos/W&M) • Forward angle (UVa, Z. Zhao, X. Zheng, W&M, D. Armstrong? ) • Large angle (Los Alamos, J. Haung, /Duke, M. Meziane) • TOF with MRPC (Tsinghua, Y. Wang/Duke, H. Gao/A. Camsonne) • DAQ and Trigger (JLab, A. Camsonne/Y. Qiang/Umass, R. Miskimen/others? ) • Polarimetry (UVa, K. Paschke/W&M, W. Deconinck) • Targets (JLab, J. P. Chen/JLab target group) • Infrastructure (JLab, Hall A engineer/design team) • Others?