RunPlanDaily

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Daily Run Plan

Here are details of the daily run plan. See also the Global Run Plan. The person responsible should ensure that a crew of experts is available for the shift. This schedule will be updated frequently by the Run Coordinator as the situation on the ground changes.

Daily Run Plan for PREX   (latest at bottom)
Date (2010) Shift ---------- Activity (Responsible) ---------- --- Status ---
03/19 Day pump down; Møller, Compton, septum install; Q2 repair

Insert sieve. (Techs)

done
03/19 Swing Beam restore (B-team) done
03/20 Owl
  • Septum checkout (Michaels: Page when beam imminent & spectrometer ready)

also:

  • Initial look at low current cavity monitors (Ahmed: Page when beam imminent & spectrometer ready)
  • Target alignment (Michaels)
  • VDC checkout (Michaels)
  • Quartz detectors checkout (McNulty, Wexler -- page when VDC tracks seen)
  • GEM checkout (Camsonne -- page when VDC tracks seen, if left dipole is operating)
 done

All at 1-2 µA.
Scattered energy ~ beam energy = 1.063 GeV.
Quad settings:

  • Right arm:
    • Q1: dI/dP= 411.2474 Amps/GeV/c
    • Q2: dI/dP= 436.2014 Amps/GeV/c
    • Q3: dI/dP= 433.3897 Amps/GeV/c
  • Left Arm:
    • Q1: dI/dP= 419.8772 Amps/GeV/c
    • Q2: dI/dP= 435.6273 Amps/GeV/c
    • Q3: dI/dP= 434.9682 Amps/GeV/c

"Usual" polarity

03/20 Day Beam off & hall open 9:00 am

Quads repair; Compton install; GEM install; signals debugging. Leave sieves in. (Techs)

done
03/20 Swing
  • Close up hall
  • Benesch tuning (1/2 - 2 hours)
  • Verify quad polarities (Camsonne)
  • Cavity monitors basic function test (Ahmed)
  • Low current cavity monitors setup (Musson, Ahmed)
 done
3/21 Owl
  • Low current cavity monitors setup (Musson, Ahmed)
  • Access for GEM installation (Camsonne)
 done but GEMs not ready
3/21 Day
  • Spectrometer checkout:
    • Quartz detectors checkout (McNulty, Wexler)
    • Lumi checkout (Mercado) (2 µA on Ta)
    • GEM checkout (Camsonne?)
  • A line tuning (Benesch)
  • Raster checkout
  • Access:
    • Low current cavities
    • Target position
    • Quartz
    • Scintillator alignment
    • LQ2
 done
3/21 Swing
  • Low current cavity monitors setup (Michaels, Ahmed)
  • Remove sieves
  • Initial look at sieve out data
  • Replace sieves
 done
3/22 Owl
  • Pointing measurement (Riordan)
  • Remove sieves
  • Repeat pointing measurements with no sieves
  • If done or unable to continue before 4 am page Luis Mercado to do lumi checks
  • After 4 am page Dustin McNulty for detector work
 done
3/22 Day
  • Optics (Liyanage) Sieve OUT. NB Current limit 2 uA!
 done
3/22 Swing
  • Optics continued, sieve IN. NB Current limit 2 uA! (Shift Crew)
 done
3/23 Owl
  • Quartz detectors resolution studies (KK, Dustin, John W)
  • Lumi studies (Luis)
 done
3/23 Day
  • Remove water target. (Target, Techs)
  • Reconfigure Moller cryo.
  • Beam studies ~ 2pm, study of helicity correlated position differences for spin flipper states. (Dalton, Rupesh, Reza)
 water cell removed, rest not finished
3/23 Swing
  • Target pumpdown
 done
3/24 Owl
  • Target pumpdown
 done
3/24 Day
  • Target cooldown
 done
3/24 Swing
  • Tune high current beam into Hall A
 done
3/25 Owl
  • Commission lead target, 50 uA (Bob)
  • Lumis and oversampling tests (KK, Luis, Paul)
 in progress
3/25 Day
  • Access to fix left dipole
 done
3/25 Swing
  • Parity Quality commissioning (Kent, Rupesh, Luis, Dustin)
  • Beam monitor calibrations (Diancheng Wang, Xiaoyan Deng)
 postponed
3/26 Owl
  • High Luminosity Detector Commissioning
 in progress
3/26 Day
  • Moller Checkout
 postponed
3/26 Swing
  • High Current on C12 (thick and thin)
 partly done
3/27 Owl no beam
3/27 Day no beam
3/27 Swing
  • High-current on thick C12, adjust HV (Luis or Bob)
  • Finish the commissioning of thick Pb target (Bob, Ahmed)
  • Electronic Commissioning (KK, Luis, Paul, Jon et al)
done, high-current tests continue
3/28 Owl
  • Continue with the above, if necessary.
  • High Luminosity Commissioning (Rupesh, Luis, Jon, Bob)
  • BCM/BPM calibration (Rupesh)
  • Establishing Parity Measurements, Charge feedback, blinding (Rupesh, Jon)
 not finished
3/28 Day
  • Comparison Study of Optics Tunes (Seamus, Nilanga, Kiad)
  • Sometime before Monday, submit the ATLIS plan for Dithering test (Rupesh)
 done
3/28 Swing
  • Continue Optics if necessary.
  • Continue High Luminosity Commissioning
 done
3/29 Owl
  • Mini-production run (shift crew)
  • Stop beam at 07:00 or whenever Ed Folts asks to.
 done
3/29 Day
  • Open Hall A to set up Moller and Compton (Ed Folts, Sasha, Sirish, et.al.)
  • Work on GEMs (Alex, Seamus, et.al.)
  • MCC to do beam studies while Hall A open
  • Detector linearity/LED tests (Luis)
  • Setup WAC analysis (Mark, Mindy)
 done
3/29 Swing
  • Moller magnet cooldown
  • Optics and acceptance studies (Seamus, Ahmed, Nilanga)
 done
3/30 Owl
  • Commission charge feedback (Mark)
  • Current monitor calibration and pedestals determination (Mark)
  • Quasi-production on Empty Target (owl shift crew)
 done
3/30 Day
  • Access do work on Moller and Compton.
  • Some GEM installation work. (Alex, Seamus, Kiad, Nilanga)
  • Possible linearity/LED study. (Luis)
 done, except linearity
3/30 Swing
  • First Commissioning of Moller -- Beam Checks (Sasha, Javier, Roman, Jay)
 done
3/31 Owl
  • Scans of Septum and quad Q1 for tunes A and B. (Bob)
  • Beam Studies of Helicity Correlations
 done
3/31 Day
  • Beam Tuning (Jay Benesch)
 done
3/31 Swing
  • Either or both of these:
  • a) Moller Commissioning (Sasha, Javier, Roman, Jay)
  • b) Tests of Dithering and other Beam-Related things (Kent, Rupesh)
 Moller was done
4/1 Owl
  • If Kent's tests not done on Swing, continue here. (Kent, Rupesh)
  • Beam and Septum scan with new tune (Seamus)
  • Helicity-correlated beam studies (Shift crew)
 done
4/1 Day
  • Beam Tuning (Jay)
 done, successful
4/1 Swing
  • More beam tuning if necessary
  • Moller Commissioning
 done
Friday 2 April Owl
  • Assuming the HRS tune has been frozen
  • Check detector alignment
  • A_T studies
  • Q2 Measurements
partly done, needs more work
Friday 2 April Day
  • Tuning Beam for Compton
 done
Friday 2 April Swing
  • 20:00 Obtain sieve runs (optics mini-run plan), Q2 measurements (Bob)
 done, but not Q2
Saturday 3 April Owl
  • Obtain sieve runs on Ta (Nilanga mini-run plan)
  • Put in Lead target at low current and do counting-mode runs (Rupesh, Ahmed)
  • Integrate-mode with Lead at 2 or 3 uA (Luis, Jon)
 done
Saturday 3 April Day
  • Moller Commissioning (priority activity)
  • Work on getting into production mode (Mark, Rupesh)
 done, but not yet in prod.
Saturday 3 April Swing
  • Moller commissioning
done
Sunday 4 April Owl
  • Counting data on tune Y (right arm) super-thin carbon
  • Change to tune B
  • Integrate-mode with Lead at 2 or 3 uA (Luis, Jon)
 done
Sunday 4 April Day
  • Integrate-mode with thick carbon 50 uA
  • Compton QWP1 calibration.
 done
Sunday 4 April Swing
  • General Compton commissioning and pseudo-production (empty target) parity data at 50 uA.
 done
Monday 5 April Owl
  • pseudo-production (empty target) parity data and Compton data at 50 uA.
 done
Monday 5 April Day
  • 12:00 Jay to run optics test (~ 30 mins)
  • Moller Spin Dance
  • Set up vertical polarization and measure A_T
done
Monday 5 April Swing
  • Continue to setup up vertical polarization
  • Measurements of A_T on Pb and C12
 done
Tuesday 6 April Owl
  • Continue measurements of A_T on Pb and C12
 partly done
Tuesday 6 April Day
  • Possible horizontal scan: Tune B with sieve slit (Seamus)
  • When ready: Relocate Quartz Detectors (Dustin, Jack)
 postponed: vacuum problems
Tuesday 6 April Swing
  • In restricted access.
  • Any activities that require access.
  • Shift canceled
Wednesday 7 April Owl
  • Shift cancelled
Wednesday 7 April Day
  • Shift cancelled
  • Investigate target vacuum problem
  • Move quartz detectors (Dustin, Jack)
 Leak found at O-ring connection between target chamber and collimator box
Wednesday 7 April Swing
  • Shift cancelled
Thursday 8 April Owl
  • Shift cancelled
Thursday 8 April Day
  • Shift cancelled
 Target chamber open, found that the 4th foil in Optics target blown off
Thursday 8 April Swing
  • Shift cancelled
Friday 9 April Owl
  • Shift cancelled
Friday 9 April Day
  • To be determined.
  • When ready: Install GEMs
Friday 9 April Swing
  • Cancelled
Saturday 10 April Owl
  • Cancelled
Saturday 10 April Day
  • Cancelled
Saturday 10 April Swing
  • Cancelled
Sunday 11 April Owl
  • Cancelled
Sunday 11 April Day
  • Cancelled
Sunday 11 April Swing
  • Cancelled
Monday 12 April Owl
  • Cancelled
Monday 12 April Day
  • Cancelled
Monday 12 April Swing
  • Cancelled
Tuesday 13 April Owl
  • Cancelled
Tuesday 13 April Day
  • Cancelled
Tuesday 13 April Swing
  • Cancelled
 Tungsten collimator modified and installed. Target pump down started and initially successful.
Wednesday 14 April Owl
  • Cancelled
 Target pump down.
Wednesday 14 April Day
  • Cancelled -- no shift workers (might need a TO)
  • Target pump down and leak checking.
  • When ready, begin target cooldown. (Dave Meekins and JP)
 Done. Vacuum good. Target cold.
Wednesday 14 April Swing
  • Beam restore in Hall A
  • Harp Scan - Shifters
  • Raster size scan (goal is 3x3mm on empty cell) - Shifters.
  • Detector Alignment - Dustin
  • Dithering run with Septum On/Off - Rupesh.
Thursday 15 April Owl
  • Thick Carbon Integrating Mode Run - Rupesh.
  • Thick Carbon Dithering Run - Rupesh + Luis.
  • Take Access: Change to counting mode and put sieve in - Ahmed.
Thursday 15 April Day
  • Beam Studies -- establishing good beam in Hall A and Compton (Jay and B team)
Thursday 15 April Swing
  • Detector Alignment - Dustin.
  • Pb Alignment - Bob.
  • Take access and put sieve in - Seamus.
  • Sieve Alignment - Seamus.
  • Take Access to remove sieve (Seamus) + switch to integrating mode (Jon) - Page Guy and Bob.
  • Heat load test (run up to 500C) - Bob + Guy.

If possible, depending on heat load test:

  • Relative Rate 12C/Pb Runs - Bob / Dustin.
  • Start production (Rupesh, Luis, Kent, Krishna)
Friday 16 April Owl
  • Production
Friday 16 April Day
  • Production
Friday 16 April Swing
  • Production @ 40uA
  • Ramp up to 50uA (Guy + Bob)
Saturday 17 April Owl
  • Production @ 50uA
Saturday 17 April Day
  • Production @ 50uA
  • Moller Checks + Measurement Starting 9am (Sasha)
Saturday 17 April Swing
  • Moller till 7pm (Sasha).
  • Compton (Jay Benesch + Megan).
  • Production @ 50uA.
Sunday 18 April Owl
  • Production @ 50uA
Sunday 18 April Day + Swing
  • Production @ 50uA.
  • Staring 3pm:
  1. Compton test (Jay Benesch + Megan).
  2. Page Dustin + Jon + Bob + Sasha.
  3. Q^2 Measurement (Bob)
  4. Call Compton Experts
  5. Access:
    1. Refill Moller Magnet.
    2. Check Compton HV.
    3. Remove S0.
    4. Go to counting mode (Dustin).
    5. Compton Stuff.
    6. Detector Mapping (Jon).
  6. Detector Alignment (Dustin).
  7. Q^2 Measurement (Bob).
  8. Relative Rate Measurement (Bob).
  9. Access to Return to Integrating Mode.
  • Production @ 50uA
Monday 19 April Owl
  • Production @ 50uA
Monday 19 April Day
  • Production @ 50uA
Monday 19 April Swing
  • Production
Tuesday 20 April Owl
  • Production
Tuesday 20 April Day
  • Production
  • Beam studies from approx. 11 am to 2 pm
  • Hall A Activities:
  • -- Compton 1/4wave stepper (Abdurahim)
  • -- Check R-HRS Q2 and switch to remote mode (Heidi)
  • -- Adjust R-HRS A_T (Dustin)
  • -- Take pedestal data (Jon)
  • -- Check 4th GEM and possibly install 5th (Alex, Jon)
  • -- Test motion of A_T detector R-HRS (Jon)
  • -- Possible Compton shielding / HV check (Megan)
  • -- Ramp Moller magnet, measure stray fields. (Sasha)
  • -- Parasitic work on floor (Yi Qiang)
Tuesday 20 April Swing
  • Tune up Compton
  • Production
Wednesday 21 April Owl
  • Production
Wednesday 21 April Day
  • Production
Wednesday 21 April Swing
  • Production
Thursday 22 April Owl
  • Production
Thursday 22 April Day
  • Beam studies. Transverse Phase Space Study in Wien. (Reza, Mark, Rupesh)
  • At ~2 pm start Moller commissioning
Thursday 22 April Swing
  • Finish Moller (10 hours)
  • Resume Production
  • Don't forget the beam recovery procedure
Friday 23 April Owl
  • Production
Friday 23 April Day
  • Q2 Studies (3 hrs) -- Dustin, Bob
  • GEM studies are only parasitic.
Friday 23 April Swing
  • Production
Saturday 24 April Owl
  • Production on thick C12
Saturday 24 April Day
  • Production on thick C12
  • At about 2 pm switch to 120 Hz, still C12
  • Run briefly on C12 at 120 Hz
  • Switch to thick Pb target (120 Hz)
Saturday 24 April Swing
  • Production on Pb at 120 Hz
Sunday 25 April Owl
  • Production
Sunday 25 April Day
  • Q2 measurements - Bob, Dustin
  • Otherwise production
 done
Sunday 25 April Swing
  • Production
Monday 26 April Owl
  • Production
Monday 26 April Day
  • Wien flip
 Wien flip postponed until Tues
Monday 26 April Swing
  • Production
Tuesday 27 April Owl
  • Production
Tuesday 27 April Day
  • Beam Studies
  • Wien Flip
  • Checks of laser at polarized source (Kent and EGG)
  • Adiabatic Damping Study (Yves Roblin)
Tuesday 27 April Swing
Wednesday 28 April Owl
  • Production
Wednesday 28 April Day
  • Production
Wednesday 28 April Swing
Thursday 29 April Owl
  • Production
Thursday 29 April Day
  • Production
Thursday 29 April Swing
  • Production
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