Daily Run Plan for PREX (latest at bottom)
| Date (2010) |
Shift |
---------- Activity (Responsible) ---------- |
--- Status ---
|
| Monday 3 May
|
Owl
|
|
|
| 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
|
|
|
| Tuesday 4 May
|
Owl
|
|
|
| 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
|
|
- Continued Compton realignment/laser polarization measurement
|
| Wednesday 5 May
|
Owl
|
|
- 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
|
|
|
| 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
|
|
| 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
|
|
|
| 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 measurement gives 91% polarization
|
| Sunday 9 May
|
Owl
|
|
|
| Sunday 9 May
|
Day
|
- Compton ready?
- Production
|
- Cavity locks at 3kW!
- Valve upstream of chicane will not open
|
| Sunday 9 May
|
Swing
|
|
|
| Monday 10 May
|
Owl
|
|
- 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
|
|
- 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
|
|
| Wednesday 12 May
|
Swing
|
|
- Left dipole down
- Left Q3 controls problem
- Target vacuum bad
|
| Thursday 13 May
|
Owl
|
|
- 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
|
|
|
| Friday 14 May
|
Owl
|
|
|
| Friday 14 May
|
Day
|
|
|
| Friday 14 May
|
Swing
|
- Cool target
- Re-establish beam
- Raster tests
|
- Target vacuum good
- Both spectrometers good
|
| Saturday 15 May
|
Owl
|
|
|
| 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
|
|
- 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
|
|
|
| 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'
- 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
- Q2 and detector alignment (2-3hrs, around 8pm)
|
- short Q2 measurement
- Target vacuum tripped valves closed -> no beam
|
| Thursday 20 May
|
Owl
|
|
- No beam - target operator only
|
| Thursday 20 May
|
Day
|
- Beam Studies (start at 8:30am, afternoon for Compton tuning)
- Some measurements on left dipole power supply by Jack in Hall
- Production
|
- Compton tuning needs to be rescheduled
- Jack did some work in hall
|
| Thursday 20 May
|
Swing
|
|
We lost the target vacuum. Will need to warm up target and replace O-ring after letting radiation subside. Plan to replace O-ring on Monday May 24.
|
| Friday 21 May
|
Owl
|
|
|
| Friday 21 May
|
Day
|
|
|
| Friday 21 May
|
Swing
|
|
|
| Saturday 22 May
|
Owl
|
|
|
| Saturday 22 May
|
Day
|
|
|
| Saturday 22 May
|
Swing
|
|
|
| Sunday 23 May
|
Owl
|
|
|
| Sunday 23 May
|
Day
|
|
|
| Sunday 23 May
|
Swing
|
|
|
| Monday 24 May
|
Owl
|
|
|
| Monday 24 May
|
Day
|
- Various tests
- Pedestal runs
- linearity studies
- detector time constant tests
- GEM studies
- Target repairs - replace o-ring with silicon one temporarily
- Keep target warm and pump down
- Leak check
|
|
| Monday 24 May
|
Swing
|
|
|
| Tuesday 25 May
|
Owl
|
|
|
| Tuesday 25 May
|
Day
|
- Beam Studies (until between 10am and noon)
- Pedestal runs
|
Kalres O-ring installed ahead of schedule. Pumping down.
|
|
| Tuesday 25 May
|
Swing
|
|
|
| Wednesday 26 May
|
Owl
|
|
|
| Wednesday 26 May
|
Day
|
- Accelerator Vacuum Group in Hall for Leak checks
- Switch box arrived for activate remotely the heating and cooling of thetarget
|
- Found a leak, but pressure stable at 675 mtor
- Electrician will install the appropriate outlet; R. Michaels is working on the remote control.
|
|
| Wednesday 26 May
|
Swing
|
|
|
| Thursday 27 May
|
Owl
|
|
|
| Thursday 27 May
|
Day
|
- Accelerator Vacuum Group in Hall for Leak checks
|
|
| Thursday 27 May
|
Swing
|
|
|
| Friday 28 May
|
Owl
|
|
|
| Friday 28 May
|
Day
|
- Shift workers on Standby
- Accelerator Vacuum Group in Hall for Leak checks
|
|
| Friday 28 May
|
Swing
|
|
|
| Saturday 29 May
|
Owl
|
|
|
| Saturday 29 May
|
Day
|
|
|
| Saturday 29 May
|
Swing
|
|
|
| Sunday 30 May
|
Owl
|
|
|
| Sunday 30 May
|
Day
|
|
|
| Sunday 30 May
|
Swing
|
|
|
| Monday 31 May
|
Owl
|
|
|
| Monday 31 May
|
Day
|
|
|
| Monday 31 May
|
Swing
|
|
|
| Tuesday 1 June
|
Owl
|
|
|
| Tuesday 1 June
|
Day
|
|
|
| Tuesday 1 June
|
Swing
|
|
|
| Wednesday 2 June
|
Owl
|
|
|
| Wednesday 2 June
|
Day
|
|
|
| Wednesday 2 June
|
Swing
|
|
|
| Thursday 3 June
|
Owl
|
|
|
| Thursday 3 June
|
Day
|
- Cooling down target (more likely to start on Swing)
- Day shift on standby.
|
|
| Thursday 3 June
|
Swing
|
- Swing shift workers are needed.
- PREX detector in counting mode
- resume beam in Compton chicane ( MCC )
- harp scan for beam profile and beam position ( Shift crew - MCC )
- raster check ( Shift crew )
- Long down target recovery procedure ( Shift crew )
- Alignment checks, Q2 ( Dustin Mc Nulty ).
- put sieve in
- take alignement data
- put sieve out
- Q2 measurement
- Ask for access to go to integrating mode ( Jon Wrexler or Amhed Zafar )
- Restart Production
- Production
|
|
| Friday 4 June
|
Owl
|
|
|
| Friday 4 June
|
Day
|
|
|
| Friday 4 June
|
Swing
|
|
|
| Saturday 5 June
|
Owl
|
|
|
| Saturday 5 June
|
Day
|
|
|
| Saturday 5 June
|
Swing
|
|
|
| Sunday 6 June
|
Owl
|
|
|
| Sunday 6 June
|
Day
|
|
|
| Sunday 6 June
|
Swing
|
|
|
| Monday 7 June
|
Owl
|
|
|
| Monday 7 June
|
Day
|
|
|
| Monday 7 June
|
Swing
|
|
|
| Tuesday 8 June
|
Owl
|
|
|
| Tuesday 8 June
|
Day
|
|
|
| Tuesday 8 June
|
Swing
|
|
|
| Wednesday 9 June
|
Owl
|
|
|
| Wednesday 9 June
|
Day
|
|
|
| Wednesday 9 June
|
Swing
|
|
|
