1. General Considerations Jian-ping Chen SoLID-SIDIS Collaboration Meeting

2. 12 GeV upgrade: opens up a large window for DIS in the valence region SoLID: a general purpose large acceptance spectrometer Uniform and full 2 azimuthal angular acceptance High Rate Capability: allow for high luminosity Ideal for precision DIS and SIDIS experiments Approved Experiments: PDVIS (E12-10-007), Pauls talk SIDIS I: transversity (E12-10-006), Xins talk SIDIS II: worm-gear (E12-11-007), Jins talk More proposals to come SoLID Experiments

3. Special considerations for SIDIS: Identify hadron ( ) as well as electron Forward and large angle detections Event-by-event Identify major tasks for the SIDIS experiments Ready for the directors review; Ready for the experiments Identify responsible person(s)/group(s) for each task/subsystem Magnet (Argonne, Paul Reimer) Detector supporting structure (Duke, Haiyan Gao) General (physics and background) simulation (UVa, Zhiwen Zhao) Neutron background simulation (Syrucuse, Lorenzo Zana) GEM detectors (UVa, Nilanga Liyanaga, Chinese colalboration) Tracking (Caltech, Xin Qian) Electron Identifications EM calorimeter: forward angle (UVa, Zhiwen Zhao) large angle (Los Alamos/MIT, Jin Haung) Light gas Cherenkov (Duke/Temple, Simona Malace, Zein-Eddine Meziani) identifications Heavy Gas Cherenkov (Duke/Temple, Simona Malace, Zein-Eddine Meziani) TOF with MRPC (Duke, Haoyan Gao, Tsinghua, Yi Wang) DAQ and Trigger (JLab, Alexandre Camsonne, Yi Qiang) Target (Jlab, Jian-ping Chen) Beamline/Polarimetry (UVa, Kent) Infrastructure (JLab, Hall A engineer/design team) Goals/Responsibilities

4. Milestones, Peoplepower, Costs, Other Issues Milestones: Aim for review in Oct. Next Collaboration Meeting June 2-3. Peoplepower Cost estimations Issues/questions/concerns?