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.

Previous daily run plans can be found here PreviousRunPlanDaily


Daily Run Plan for PREX   (latest at bottom)
Date (2010) Shift ---------- Activity (Responsible) ---------- --- Status ---
Monday 3 May Owl
  • Production
Monday 3 May Day
  • Hall B Pass change 3 -> 5 until ~1:00PM
  • Compton vacuum, LHRS dipole UPS replacement during the down
  • Bake compton chicane overnight during production, run beam straight through
  • Return to PbD #2 production
  • Large asymmetry run (Jon)
  • Baking started, HRS work completed by Heidi
Monday 3 May Swing
  • Production
Tuesday 4 May Owl
  • Production
Tuesday 4 May Day
  • Work on switch for Pockels cell (start 9:00AM)
  • Complete Compton beam line bake-out, leak check, cavity alignment
  • Pockels cell switch work complete
  • Compton vacuum reopened
Tuesday 4 May Swing
  • Production
  • Continued Compton realignment/laser polarization measurement
Wednesday 5 May Owl
  • Production
  • Stopped work on Compton - still not complete
  • Changed beam spot size to 200x200um
Wednesday 5 May Day
  • 12 hours Moller tests, start 9:00AM (Sasha, Jixie)
Wednesday 5 May Swing
  • Finish Moller tests, 21:00
  • Raster clock tests 22:00-24:00 (KK, Bob, Jon)
  • Production as per raster clock tests
Thursday 6 May Owl
  • Production
Thursday 6 May Day
  • Beam Studies (8 hours controlled access starting 08:15)
    • Finish Compton cavity work (Sirish, Abdurahim)
    • Start Compton pumping, replace leaky upstream valve? (John Heckman et al)
    • Remove GEM(s)?? (Alex, Kiad)
    • Compton Boron installation (Megan)
  • Continued compton cavity alignment
  • Boron installed
  • INFN GEMs removed to EEL, (additional UVA GEM installed?
Thursday 6 May Swing
  • Raster clock tests
  • Production
  • CHL trip
Friday 7 May Owl
  • Raster clock tests (cont?)
  • Production
  • Tests aborted due to network switch failure in the hall
Friday 7 May Day
  • Production
  • Wien flip, QE scan, spot move (nominally 9:00AM)
  • Wien flip, QE scan, spot move completed.
  • Compton valve work continued until 2:00
  • Started detector alignment checks
  • Q2 and establish low-current cavities (Dustin)
Friday 7 May Swing
  • Tests by KK et al
  • Production
Saturday 8 May Owl
  • Production
Saturday 8 May Day
  • Production
  • 2:00PM - Turn off cavity baking
  • 3:00PM - Leak check, turn on ion pumps
  • 4:00PM - Routine Moller Measurement
  • Compton vacuum reestablished
  • Replaced valve opens with sufficient vacuum levels
Saturday 8 May Swing
  • Moller
  • Moller measurement gives 91% polarization
Sunday 9 May Owl
  • Production
Sunday 9 May Day
  • Compton ready?
  • Production
  • Cavity locks at 3kW!
  • Valve upstream of chicane will not open
Sunday 9 May Swing
  • Production
Monday 10 May Owl
  • Production
  • Left dipole down
  • Compton valve stuck
Monday 10 May Day
  • Fix left dipole
  • Fix Compton valve
  • Fix target vacuum
  • Left dipole down
  • Compton valve fixed and tested
  • Target vacuum bad
Monday 10 May Swing
  • Standby
  • Empty or C target oversampling runs if valves can be opened
  • 1-arm production if target vacuum < 5E-5
  • Left dipole down
  • Target vacuum bad
Tuesday 11 May Owl
  • Standby
  • Empty or C target oversampling runs if valves can be opened
  • 1-arm production if target vacuum < 5E-5
Tuesday 11 May Day
  • Wien flip
  • Beam studies -- injector studies
  • Raster setup
  • Fix left dipole
  • Fix target vacuum
Tuesday 11 May Swing
  • Compton tune
  • Oversampling tests
  • Left dipole down
  • Right dipole NMR down
  • Target vacuum bad
Wednesday 12 May Owl
  • Production
  • Left dipole down
  • Right dipole NMR down
  • Target vacuum bad
Wednesday 12 May Day
  • Repair left dipole PS
  • Repair right dipole NMR
  • Repair right Q3 bad bit
  • Target vacuum bad
Wednesday 12 May Swing
  • Standby
  • Left dipole down
  • Left Q3 controls problem
  • Target vacuum bad
Thursday 13 May Owl
  • Standby
  • Left dipole down
  • Left Q3 controls problem
  • Target vacuum bad
Thursday 13 May Day
  • Repair left dipole PS
  • Repair left Q3 controls
  • Find and stop target vacuum leak
  • Warm up target
Thursday 13 May Swing
  • Warm up target
Friday 14 May Owl
  • Pump down target
Friday 14 May Day
  • Pump down target
Friday 14 May Swing
  • Cool target
  • Re-establish beam
  • Raster tests
  • Target vacuum good
  • Both spectrometers good
Saturday 15 May Owl
  • Production
Saturday 15 May Day
  • Access for left dipole regulation
  • Left dipole regulation failed
  • Target vacuum increase, then decrease with added heating
Saturday 15 May Swing
  • Access for left dipole regulation
  • Re-establish beam
  • Møller
  • Left dipole regulation bad
  • Target vacuum varying, mostly < 1e5
Sunday 16 May Owl
  • Møller
  • Left dipole regulation bad
  • Target vacuum varying, mostly < 1e5
Sunday 16 May Day
  • Access for left dipole regulation
  • Target vacuum varying, mostly < 1e5
Sunday 16 May Swing
  • Production
  • Background test (L PMTs on)
  • Left dipole regulation bad
  • Target vacuum varying, mostly < 1e5
Monday 17 May Owl
  • Production
Monday 17 May Day
  • Controlled Access for Left Dipole fix
  • Moller refilled
  • Left dipole working for now
  • Suspect bad silicon-controlled rectifier (SCR)
  • There are 12 needed and only 6 spares
  • Looking for spares and will work during beam studies Tue.
Monday 17 May Swing
  • Production with both arms!
Tuesday 18 May Owl
  • Production (hopefully with both arms!)
  • No Left Dipole issues all night
Tuesday 18 May Day
  • Beam Studies, beginning 9am (8hrs)
  • Wien Flip
  • Maintenance on the Left Dipole Power supply
  • Wien Flip completed before beam studies
  • Beam studies completed
  • Measurements performed on Left Dipole Power supply
Tuesday 18 May Swing
  • Production
  • Oversample tests (Rupesh)
  • Compton not done
  • Oversample tests not done
Wednesday 19 May Owl
  • Production
  • Oversample tests
  • Oversample tests completed
Wednesday 19 May Day
  • Compton Tuning (1-2hrs, start around 10am)
  • Raster tests during 'target vacuum recovery'
  • Q2 and detector alignment (2-3hrs, possibly around 1:30pm, probably after 8pm)
  • Production
  • Injector tuning did not help Compton rates
  • Jay and Yan are asking for advice
  • Compton tuning during beam studies tomorrow
Wednesday 19 May Swing
  • Production
Thursday 20 May Owl
  • Production
Thursday 20 May Day
  • Beam Studies (start at 8:30am, afternoon for Compton tuning)
  • Try to set up hareboot for target heaters in hall
  • Production
Thursday 20 May Swing
  • Production
Friday 21 May Owl
  • Production
Friday 21 May Day
  • Production
  • Moller (6-7 hrs, start at 9am)
  • Wien Flip
Friday 21 May Swing
  • Production
Saturday 22 May Owl
  • Production
Saturday 22 May Day
  • Production
Saturday 22 May Swing
  • Production
Sunday 23 May Owl
  • Production
Sunday 23 May Day
  • Production
Sunday 23 May Swing
  • Production
Monday 24 May Owl
  • Production
Monday 24 May Day
  • Production
Monday 24 May Swing
  • Production
Tuesday 25 May Owl
  • Production
Tuesday 25 May Day
  • Production
  • Beam Studies
  • Wien Flip
Tuesday 25 May Swing
  • Production
Wednesday 26 May Owl
  • Production
Wednesday 26 May Day
  • Production
Wednesday 26 May Swing
  • Production
Thursday 27 May Owl
  • Production
Thursday 27 May Day
  • Beam Studies
  • Production
Thursday 27 May Swing
  • Production
Friday 28 May Owl
  • Production
Friday 28 May Day
  • Production
  • Wien Flip
Friday 28 May Swing
  • Production
Saturday 29 May Owl
  • Production
Saturday 29 May Day
  • Production
Saturday 29 May Swing
  • Production
Sunday 30 May Owl
  • Production
Sunday 30 May Day
  • Production
Sunday 30 May Swing
  • Production
Monday 31 May Owl
  • Production
Monday 31 May Day
  • Production
Monday 31 May Swing
  • Production