Transversity Experiment Pre-Beam Checklist Xiaodong Jiang, updated 10/21/2008, (Please don't erase items. Add comments to the items when they are done. Add new items at the end of each section. Please highlight the changes you made.) 1. Beamline, beam delivery. Compton, Lumi-detectors and beam-dump. 1.1 Transversity beam delivery specifications, communication to MCC (Xiaodong Jiang + J.-P. Chen with MCC.) Memo to Kees send on Aug 7th, met with MCC in early September. Need to meet with MCC again on beam delivery specifics for beam charge calibration (Oct, 20th, 2008, Xiaodong+Arun) 1.2 Beam ramp-up procedures on polarized He3 target. (J.-P. Chen with MCC). Need verification (Oct, 20th, 2008). 1.3 Confirm final beam energy for delivery (one- two- and five-pass), update runplan on kinematics settings, including energy loss calculations (Xiaodong Jiang). 1.4 Hall A harp check out, review/confirm harp-scan procedures (Arun Saha). Prepare for ARC energy measurement for five-pass beam (Arun Saha). If it takes less than two hours, also do ARC energy measurements at one- and two- pass during commisioning. 1.5 Hall A BPM check out. BPM calibration need and procedures. BPM pedestal run (Vince) Calibration constants and online software checkout for spot++ (Vince) 1.6 Decide raster pattern: SQUARE (7/21/08 J.-P. Chen), specify beam size on polarized He3 cell (2mm by 2mm to 4mm by 4mm), raster hardware check (Hall A staff), software control and decoding in place (Alex). 1.7 Compton detector checklist (Sirish Nanda and CMU group). Beam tuning procedures for Compton, specify the acceptable beam tune (Sirish with MCC). Compton commissioning run plan. Setup for Compton running during production, local experts for trouble shooting. Decided not to tune beam through Compton for one- and two-pass beam. (Xiaodong, Kees+Sirish. 10/21/2008) 1.8 Moller preparation for one- and five-pass beam (Eugene Chudakov). Production runs with Moller quards ON for five-pass (Yes, that's the default, Eugene). Consistecy checks with Hall B and Hall C Moller measurements. Determine absolute beam helicity signs in Hall A, for one- and five-pass beam. Runs with a large beam charge asymmetry (Yes, we need to do that. Xiaodong Jiang and Eugene). Confirm a procedure of operation with MCC (Oct. 20th, 2008, Xiaodong Jiang). Beam half-wave plate IN/OUT changes during data taking, plan ahead and communicate with other halls (Xiaodong Jiang). Wien filter angle and beam half-wave plate status in EPICS data stream (Yes, already in. Eugene). Verify with accelerator the meaning in EPICS: "Half-wave plate", "rotating wave plate", "beam Half-wave plate". 1.9 Set trip limits for target and beam-dump ion chambers. Confirm thaht MCC has beam-dump viewer to tell if beam goes straight. 1.10 Lumi detector checkout, remove neutral density filters (Dustin McNulty). HAPPEX DAQ, beam charge feedback checkout. 1.11 Lumi readout by transversity DAQ. Synchronization and consistency check between Lumi, HRS scalers and BigBite scalers on common clock-markers. (Bob Michaels + Joe + Kalyan). 1.12 An iron (?) cylinder mounted around the first sections of downstream beam pipe (Doug). 1.13 Procedures for testing BigBite's steering of beam at one-pass (Doug). 1.14 Servey of beam position monitors, upstream beam pipe. Servey of carbon hole target center, BeO screen mark, HARP+BPM units. when target ladder is in the final assembly. Update offsets in EPICS variables: Survey X offset bpmA, Y offset bpmA, X offset bpmB, Survey Y offset bpmB. Make sure MCC update on their side so that we are talking about the same beam position in the hall. Update offset numbers in spot++ (Bob). 1.15 Beam charge monitors checkout, fix down*3 readout problem (?). Confirm existing calibration constants in online software (Arun Saha). Need to perform a beam charge calibration in Hall A (Arun Saha). Prepare a procedure and checkout hardware. Injector's BCM infor read into EPICS data stream (?, check with Bob+Arun Saha) 1.16 Beam charge information into each CODA event for possible cuts in later analysis (Kalyan agreed, need more discussion with Bob. Xiaodong Jiang). 1.17 Beam line ODR working ? confirm with accelerator. 1.18 Camera working at the BeO target. Viewed from counting house (Ed Folts). 2. Targets. 2.1 Target magnetic field measurement (Yi Qiang) 2.2 Target holding field direction measurements with compass (Yi Qiang+Chiranjib+Wolfgang). 2.3 Target cell alignment and survey (ordered by JP, need to have the report). 2.4 Target position decoding, calibration of target movement. A visual confirmation (Yi Qiang). 2.5 NMR and EPR working (Yi Qiang). 2.6 Target cooling jet working. 2.7 Target slow control variables in EPICS data stream. Target temperture sensors working and calibrated. 2.8 Target spin-flip tested, integrated with DAQ. Nominal expected target polarization with 20 minutes target spin flip (?). Keep flipping target spin regardless of beam and DAQ status (Yes. J.-P. Chen). Roughly balence the integrated beam charge for spin-up vs spin-down runs(?). A detailed commisioning run plan and checklist for spin-flip test with beam. (Yi Qiang and Jin Huang. Trans. in-plane polarization, one-pass long. polarized beam double-spin asymmetry, at Delta-production kinematics). 2.9 Reference cell leak check (Todd). Purge procedure tested. Reference cell control tested for He3, H2, N2 gas, pressure transducers cross-calibrated with mechanical guage at the target(Todd). 2.10 Target safty and laser safty documents in place (J.-P. Chen). Signature page at the counting house. Schedule a target operator training (J.-P.). 2.11 Procedures of broken cell recovery, agreed with RADCON (J.-P. Chen). 2.12 A checklist for laser optics. Lock and tag procedure. 2.13 Rotate target to "Long+" and "Long-" for elastic He3 runs at one-pass (Yes, Xiaodong Jiang). Test rotation at least once. Verify target polarization after the rotation. 2.14 Comet lasers to work, for possible improvements on in-beam polarization (J.-P. Chen). Ordered lasers (Todd+Ron+Kees), two new laser plus one from Duke at JLab as of 10/16/08. 2.15 A detailed plot of near target collimator layout (Xiaodong emailed Al on Aug. 11th). Check to see if any of the calibration kinematics has spectrometer's view blocked (Xiaodong 10/20/2008). 2.16 A detailed plot of targets on the ladder, relative positions of reference cell, carbon foil, carbon hole, production cell (Xiaodong emailed Al on Aug. 11th). 2.17 Verify that the downstream part of longitudianal RF coil can be removed, or rotated out of the view of left_HRS at 58.1 degree (Yi Qiang). Have an operation safty procedure approved (Yi + JP). 3. Let HRS. 3.1 Left HRS free to move between 16 degree and ~60 degree. Pins on the floor to stop it from moving beyond 16 degree and 60 degree. 3.2 Magnet control. Q3 control fixed. Quards cycling procedures settled. 3.3 Procedure of left HRS polarity change, minimize time taken (Ed Folts). 3.4 Sieve slit holding plate ready. Survey positions. Reproducebility of location (Doug). When HRS_L is at 16 degree, servey of HRS_L front sieve slit. Servey HRS_L spectrometer location and pointing offsets. During Jan. 2009 down time, servey HRS_L postion and pointing again. 3.5 Front vaccum window cover ON (?) before beam comes (Ed Folts). Front vaccum window cover removed before taking data (Ed Folts, checklist). 3.6 Detector cosmic ray runs (Vince+Alex+INFN). Check all detector channels. A final layout of HRS detectors, specify their postions (Vince with Al). 3.7 Timing offsets of S1 and S2M determined. Cosmic ray beta spectrum make sense. (Vince). 3.8 Verify the initial optics data base for extended target (Vince). Data base from CSR experiment is in place. Another data base from spin-duality is the back-up (10/01/08). 3.9 Initial time-of-flight corrections in place (Vince). 3.10 RICH commissioning software ready. Prepared to murge into Hall A analyzer. (INFN: Guido Urciuoli) 3.11 A1 detector PMT HV gain matched. Software gain-match tool ready. Check dry gas purging (Vince+YouCai). 3.12 Short gas Cherenkov PMT HV gain-matched. Software gain-match tool ready (Vince+Youcai). 3.13 Lead glass PMT HV gain matched, software gain-match tool ready (Vince). 3.14 A detailed commisioning run plan in place for each detector. Specify the conditions to be satisfied before moving into production (Vince). 3.15 An Operation Safety Procedure in place for moving HRS_L to 58.2 degree (Brad+Doug+Ed). 4. BigBite. 4.1 A final detector configuration plot, with each detector's position laid out (Doug with Al). 4.2 Verify BigBite's final position in the hall. Survey of BigBite and the detector positions (Doug with JLab survey group). Need to have the report. Do we see any change of detector frame ? 4.3 BigBite dipole magnet control, work to 710 A. BigBite magnetic probe in EPICS data stream (Doug). BigBite magnet's power supply fixed, prepared for another breakdown ? (Ed Folts). Set alarm handler on BigBite current. With a Hall probe, measure the maximum residue magnetic field at the detector's PMT locations when the magnet is on, and the iron shielding plates is in place. Verify that the field is small. (Not small at all !!!! It is ~5 guass at the detector frame. Kalyan). PMT gains changed dramatically with BigBite current on !!!! Have a HV setting prepared for 680 A BigBite current (Kalyan, 10/20/2008). 4.4 BigBite dipole magnet insert pieces in place, both on the bottom and at the top (Doug with Ed Folts). Need to take a picture, have the position and shape clearly defined (Xiaodong Jiang 10/20/2008). 4.5 Front sieve slit mounted, moving mechenisim and its reproducebility checked. Sieve slit position surveyed. Use a colored pen to mark the nominal slit location (Xiaodong Jiang, 10/20/2008). Need the survey report. 4.6 Detector package cosmic ray checked. Clearly show three-chamber tracking correlated with lead-glass hits. On-line event display ready (Xin Qian, 10/20/2008). 4.7 Wire chamber HV control. Threshold voltage control works from the counting house. Voltages and other variables into the EPICS data stream. Log HV changes on HallAlog (Done. Xin, Aug 18th) Measure chamber card Low Voltages during access (on operation checklist, 10/20/2008). 4.8 Gas checkout procedures for wire chambers, gas Cherenkov. Flow gas directly from outside Hall A (Jack). Alarm on gas bottles (10/20/2008). Flow through alcahole bottle in freezer (Jack). Connect dry N2 gas and flush PMT housing. 4.9 Detectors' relative positions surveyed (Doug). Need to have the report. Initial position offsets put into analyser (Jin Huang). 4.10 Intitial optics data base set up for 1.5 meter drift (Xin Qian). Software tools ready for analysing optics data (Xin Qian and Jin Huang). 4.11 Scintillator time offsets determined. Initial flight path corrections for time-of-flight in place for electrons in BigBite, be able to identify beam bunches with relative timing through beam RF (Vince). 4.12 Add shielding blocks to protect front-end electronics from radiation damage (on both upstream and downstream). Add shielding blocks to the BigBite DAQ weldment on the upstream side. (Xiaodong with Ed). 4.13 Another independent servey to verify BigBite magnet and chamber position (Eugene + Xin) To verify results from JLab servey group. 4.14 Mapping of BigBite dipole field. A rough mapping done on Aug 17th, 2008 (Xin et al.). Need another more careful mapping at the end of the experiment with 680 A ? (xxx.xx). 4.15 Set up an independent trigger for option of higher-threshold trigger on BigBite prsh+sh. Brad did it already on Oct. 14th, 2008. Add this infor into scaler. 5. DAQ, time-of-flight, scalers, slow control and online scripts. 5.1 Time-of-flight logic pulser checked. Verify calculation of intrinsic delays for H(e,e'p) for one-pass and two-pass beam Verify intrinsic delays for production kinematics. 5.2 Beam RF timing signal readout (was in data for lowQ2-ep, Vince). 5.3 High resolution TDC for BigBite scintillators (F1 TDC, 60 ps resolution). (Kalyan+Bryan) A list of actions/tests for shortening the time-of-flight window at the beginning of production (Kalyan+Vince). 5.4 Cosmic gain-match checked for BigBite pre-shower and shower. Keep verticle cosmic trigger. Take frequent cosmic ray runs with BigBite field on. 5.5 Remote control of trigger threshold. Two-level trigger threshold settings, a low and a high (as in item 4.15). 5.6 Scalers working (Kalyan + Bob Michaels). Scaler display window works in the counting house. 5.7 Online dead time calculation make sense from the scalers. Minimize DAQ readout time, reduce deadtime (Bob Michaels + Kalyan). 5.7 EPICS variables into the data stream (Vince). A list of "must-be-recorded" EPICS variables (Xiaodong Jiang). Setup a list of online EPICS charts to watch by the shift workers. 5.8 Modify: Beginning-of-run script and End-of-run script (Vince). Automatic entries to Halog. 5.9 Raw data file size limit (4 GB now, Bob+Ole), no file splitting. Scalers won't over flow (?) Take 104 kHz clock, would the analyzer handle a scaler wrap-up (?) File name convention: e06010_xxxx.dat. Online data disk spaces (Ole). Scripts for copying raw data file to silo and verify that no recorded data get lost (Bob Michaels). A backup copy of raw data (Bob Michaels). Halog backup copy (Bob). 5.10 A complete detector-map file, keep updates (Jin Huang). 5.11 Slow-control: alarm handler (who is in charge ?). 5.12 Slow-control: a list of all fast-shutdown involved in the experiment and in the hall (Xiaodong with Javier). 5.13 Alarms status: gas alarm, ozon alarm, etc. 5.14 A list of IOCs and what's connected with them (Alex). Instructions for IOC reboots. (Alex) 6. Documentations and on-line instructions. 6.1 Run sheet and updates (Xiaodong Jiang). 6.2 Shift checklist, changes and updates (Xiaodong Jiang). 6.3 Shift worker's how-to webpage, set up for transversity and update often. Replay instructions (Jin Huang). 6.4 Shift worker training, Hall A walk-through. Target operators training and certification (J.-P. Chen). 6.5 Shift worker rules, and shift worker's food in the counting house (Spokespersons). 6.6 Experiment documentations, RSAD (done, July 7th), ESAD, COO etc (J.-P. Chen). Folders in the counting house. Signature of experiment workers. 6.7 A final Hall A floor layout for Transversity (Xiaodong Jiang with Al). 6.8 Cable routes and floor layout (Brad). 7. Transversity start-up conditions on Oct. 22nd, 2008. 7.1 One-pass beam to Hall A, E0=1.234 polarized. Beam tuned through Compton magnets. 7.2 Left HRS at 16 degree, negative mode, quards cycled. P_HRS=1.174 GeV/c for C12 quasi-elastic kinematics. Front sieve slit plate:OUT. 7.3 BigBite at 30 degree, beam right. 1.5 meter drift distance from center of target to the front surface of BigBite magnet. Front sieve slit: OUT. Magnet set to NEGATIVE mode, with 710 A current. 7.4 Target position: EMPTY. Ready to move to: Carbon hole, Carbon multi-foil and BeO, Reference cell. 8. Services and responsibilities 8.1 Safty and experiment documents. RSAD (Done) ESAD, COO, etc (J.P. Chen, deadline: 10 days before start). 8.2 Wiki webpage: policing, clearing-up and backing-up (Yi Qiang + Jin Huang). 8.3 Traneversity collaboration web page, related physics papers and collaboration meeting records (Kalyan). 8.4 Shift sign-up script setup (Alex, done Aug 15th, official call for shifts). Daily shift changes and updates (Xiaodong Jiang + Jin Huang). Arrange experts' shifts at commisioning, and production (Xiaodong Jiang). 8.5 Run plan and updates (Xiaodong Jiang). 8.6 Run coordinators and backup-person update (done, Aug 11th, Xiaodong Jiang). 8.7 A list of contact for technical experts. Pager, home phone, cell phone numbers (Jin Huang and Yawei Zhang). A list of collaborators and their institutions, email, as shifts being singed-up (Jin Huang, Xiaodong Jiang and Yawei Zhang). 8.8 A list of good runs with comments, daily updates (Set up: Wei Chen of Duke. Update Xin Qian) Keep track of beam-charge, number-of-good-events in each configurations during production (Jin Huang). Decide when to change HRS polarity, beam half-wave plate, target spin orientations (Jin Huang). 8.9 A "lay level" description of transversity experiment for JLab public webpage (Xiaodong Jiang. Done, 10/17/2008). 9. Online replay. 9.1 Jin Huang is in charge with Vince's supervision. 9.2 Mantain the official version of transversity analyzer. Software setup, update and backup files. Online instructions. Standard spectrum for online shift workers. Standard online data quality cuts and keep track the number of good events (Jin Huang). 9.3 Semi-Inclusive DIS physics class with kinematic variables (Xin Qian). Online display of physics variables (Xin Qian). Online calculation of inclusive channel double-spin asymmeries for monitoring (Xin Qian) 9.4 Lumi data decoding and on-line checks (Joe). 9.5 Set up replay logbook. Same as in Gen. For online/offline replay, expert level record-keeping and discussions. 10. Spare parts and emergency procedures. 10.1 Two spare LeCroy HV crates from MIT tested and working (jack). 10.2 Spare wire chamber HV modules tested (Doug with Jack). 10.3 Two spare FASTBUS crates and power supplies tested (Doug with JLab electronic group). Network cards. 10.4 Spare threshold power supplies for BigBite wire chambers (Xin Qian with Jack). Spare PreAmp cards, level translators, long and short ribbon cables (Xin Qian). Spare LeCroy 1877 TDCs tested (Xin Qian). 10.5 A list of target spare parts (Yi Qiang). Spare locking amplifier units. 10.6 Spare lasers and spare optics fibers. 10.7 Working target cells. Reference cells. Procedures of replacing cells and re-alignment (J.-P. Chen). 10.8 Procedures of recovery after power failures. Save initial setup files. Reboot DAQ computers. Restart GUI. Reboot IOCs, control computers, target computer. Restart spin-flip. Emergency contact list. 10.9 Operational checklists (Xiaodong Jiang, 10/20/2008). Hall access checklist. Target checklist. Shift-worker's checklist. Expert shifts' checklist. 10.xx After the 10-day commissioning period, extensive repair work on the following items have to wait untill the next scheduled down time: i. BigBite gas Cherenkov. ii. Individual pre-shower and shower blocks. iii. Less than three wire planes in BigBite chambers. iv. HRS RICH detector. v. Replacement of PMT in HRS gas Cherenkov or A1. vi. Less than four failed Lumi-detctors. vii. Compton related items.