Physics production starts (Oct 20). Commissioning (Oct 10-Oct.19).

1. Transversity Readiness and Timeline Xiaodong Jiang, March 17th, 2008.This document specifies the overall readiness for Hall A experiments E06-010/E06-011 at each stages to serve as a guideline for works from now till Oct. 6th, 2008. Physics production starts (Oct 20). Commissioning (Oct 10-Oct.19). Pre-beam ready (Oct. 6. 27 weeks from today). Installation (June 9 -Oct. 5. 17 weeks). Pre-installation ready (June 9). BigBite detector test run (late May). Installation for test run+lowQ-ep (May 9-May16). A checklist during π0 experiment (April 7th-May 7th). Remaining work during π0 installation (April 6th). Work in the test lab: Cherenkov+BB frame modification (March 24-May 3. 6 weeks left). Work in the target lab (10 weeks left before June 9).

2. For each sub-system, please address the following: • A working system ready by Oct. 6th ? • Specify performance (# of p.e. etc.) ? • Special need of Hall A technical support. • Special safety issues need to be reviewed. • A list of minimum tests and a timeline. • Any long lead items need to be ordered ? Have spare parts in hand ? • On-site manpower. Experts during the run. • What if the next deadline is missed ?

3. Pre-beam Readiness • Beamline. • Polarized 3He target and spin-flip. • BigBite and shielding. • HRS detectors. • Trigger and DAQ, coin TOF, scalers. • Slow controls. • On-line monitoring and replay software. • Manpower, RC, shift workers and expert list. • Documentations and instructions.

4. Pre-beam Readiness: Beamline • Beam energy@5.90 GeV ? ARC energy measurement ready. • MCC has automatic procedures for beam current ramp-ups. • Compton ready, manpower to run Compton. • Beam raster checked. • Beam charge monitors calibrated during earlier runs. • Moller ready for one- , two- and five-pass beam. • BPMs ready, harps checked. OTR (?). • Beamline serveyed relative to target cell. Near target shielding pieces in place. • Downstream correction coils (hor. and vert.) and controls working. • Beam dump viewer checked. • Beamloss/Ion-chamber limits set. • Happex luminosity monitors working, data in DAQ. • Happex beam charge feedback working. • Beam helicity in DAQ, scalers checked during earlier runs.

5. Pre-beam Readiness: pol. 3He target • Target polarization, min. 40%. • Spin-flip in automatic mode, signal in DAQ. • 10 production cells ready. • NMR, EPR working. Water calibrations done. • Reference cell ready for 3He, N2, H2 gas. • Laser optics ready for Long/Tran/Vert. • Target ladder, cell positions aligned. • Operation procedures and safety documents. • Target operators trained.

6. Pre-beam: BigBite • ch1+ch2+ch3 aligned. Readout ready. Spare preAmp cards tested. • Gas Cherenkov beam checked, >8 pe (?) • pre-Sh+Sh trigger set. • Scin. timing offsets checked. • HV, low-V in EPICS data. Remote set/reset. • Online display. • Shielding pieces in place. • Magnet control ready. Read I&B into data. • Spare parts in hand. Power, PMT bases etc.

7. Pre-beam: HRS-L Detectors • S2M. Coin. TOF+software. • A1. • Short Gas Cherenkov. • RICH detector and software. • Commissioning plan. • A list of standard online monitoring plots. • A list of experts.

8. Installation (June 9-Oct. 6) • BigBite and shielding • HRS detectors • Target • Beamline • Trigger. Coin TOF. DAQ. • Controls. • Test runs as early as possible. • Documentations.

9. Pre-installation ready (June 6) • Hall A floor and cable routes layout. • DAQ platform shielding pieces. • Downstream side shielding pieces for BigBite. • BigBite detector shielding hut. • Shielding pieces for BigBite front-end electronics. • BigBite platform modifications. • Safety procedures and reviews.

10. Transversity test run+LowQ-ep (late May) • Cher.+Ch3+Scin.+presh+shower. • Detector/cable map. Debug all channels. • First round of pre-sh+sh calibration. • Front-end trigger, threshold control. • Coin. TOF in e+p, BB+HRS+beam timing. • DAQ , scalers and beam helicity sorted. • A fake target spin-flip signal into DAQ. • Read Lumis into DAQ (?) • EPICS data stream, voltage controls. • Online software.

11. Installation plan for May test run • Doug • Ed+Jack.

12. A checklist before May test run • At the end of the meeting.

13. A Checklist before π0(April 7) • BigBite fits to 30o, 1.5m drift with the magnetic shielding piece (?) • Identify all major hardware interferences for transversity (done ?) • Cable layout. Delay+signal+HV cables ready. Spare cables in place. • Beam helicity+sorted scalers for BB. • Front-end electronics in the hall. • BB detector shielding blocks in the hall.

14. Work in the test lab (March 24 – May 3) • Remove ch3. Fix broken wire. • Modification of the detector frame. • Gas Cherenkov mirror aligned, assembled, cosmic-ray checked. • Ch3 back into the frame. Short cables+read out cards checked. • Gas Cherenkov box leak-tight, mounted into the new frame, gas system ready.

15. Work in the target lab (before June-9). • !!! Work list details (J.-P.) !!! • Followed by installation schedule. • A list of minimum tests.

16. Logistic supports for transversity • JLab documents (RSAD, ESAD, safety). • A Wiki page for most technical details. • Online instructions, shift howto. • Run coordinators, shift sign-up. • Shift worker training documents. • Shift checklist, run sheet. • Scripts for good runs, beam charge, #-evt.