Run Coordinator's Report for November 21 Day to November 22 Owl

Summary

No beam was taken on swing shift as accelerator first fixed a cryomodule failure and then a vacuum valve in the South Linac.

We started slug 7 this morning. Part of the Slug 7 running includes 4 hours of dummy aluminum data.

A cathode spot move is planned by the injector group either on Monday or Tuesday.

A bad scalar was changed and this has corrected the double peaked asymmetries seen in 3 channels of the right arm pion narrow asymmetries.

The compton photon detector PMT high voltage is still being run only up to 1500 V, low energy background cause it to draw too much current. Some shielding changes were made during the opportunistic access on swing shift. Studies continue.

Take production data, including 4 hours of aluminum dummy data (page Compton experts to do simultaneous low current tests.)

Monday at 12 pm, begin ramping right dipole to zero current and field. This is a good time for target boiling studies and compton studies.
Monday at 3 pm, controlled access - techs will change polarity of spectrometer magnets. Take reverse polarity data overnight. A minimum of 5 hours of data is needed here.
Tuesday at 4 am (if we have 5 hurs of data), begin ramping right dipole to zero current and field.
Tuesday at 7, controlled access, techs restore spectrometer polarity. Resumer normal production running.

Three shifts need a shift leader: Shift Leader on the day shift of Wednesday, November 25, 2009 and Shift Leader for the Owl and Day shifts of Friday, November 27, 2009. Please sign up!
Shift Leaders: please write a detailed shift summary (including runs taken and any activities) and submit the BTA for each shift. Please log CODA reboots in the halog and shift summary.
3rd person: Please make sure to start and stop the HRS DAQ at the same time as the parity DAQ and to do the prompt analysis and the HRS analyzer for every run.
3rd person: please keep a careful eye on the online data display. Most problems can be caught quickly this way.
Please make sure that the shift checklist is done once each shift.

Figure 1