RunPlanDaily

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
Tuesday 18 May	Swing	Compton Tuning (30 minutes - 1hr) Production
Wednesday 19 May	Owl	Production
Wednesday 19 May	Day	Q2 and detector alignment (whether both spectrometers in use or not) - will need to coordinate with Jack if more Left Dipole work is needed Production
Wednesday 19 May	Swing	Production
Thursday 20 May	Owl	Production
Thursday 20 May	Day	Production
Thursday 20 May	Swing	Production
Friday 21 May	Owl	Production
Friday 21 May	Day	Production Wien Flip
Friday 21 May	Swing	Production
Saturday 22 May	Owl	Production
Saturday 22 May	Day	Production
Saturday 22 May	Swing	Production
Monday 23 May	Owl	Production
Monday 23 May	Day	Production
Monday 23 May	Swing	Production