Saturday, Mar. 05: OWL Shift

Go back to Daily Run Plan Daily Run Plans

Previously...

• Production data (Kin48_3)

Specific mission

• Note:

1/ Continue production mode

- 15uA through Compton chicane

- LH2 target

- DVCS ON

- LHRS=2.92GeV, Q1/Q2/Q3=1916.640(readout:1900)/1600/1600 (Q1 regul.OFF)

- PreScaleR : PS1=PS2=PS3=1, && PS8=200

- PreScaleL : PS9 =1, + DVCS config.

• Issues:

- Can't control the Alpha Y axis of the raster. (MCC tried reboot but failed) - 1AM

- I came to CH and called to Bill to check

- Bill Gunning came to replace the PS (the escorted access)

- New PS initialization failed / dump diffuser issue, MCC reboot again but IOChla fail again (multi-times escorted access)

- From MCC(9:00AM) meeting, PD said it might be a remote reset switch (needs an analysis by expert). 

- If happen again, the remote reset switch will be replaced and more investigate detail during access.

- Raster seemed controllable by MCC (look at the Oscilloscope), but spot++ data showed X did not change at all any current

- Expert called, Bob came and investigating... HALOG

- Meantime, CHL is crashed. Hall-A is now controlled access - 1PM

- Repair raster is done HALOG

BPM/Spot++ Check

• After beam lost for considerable time (like beam study, pass change,...)
• Ask MCC to run 5uA wth carbon hole target and make sure you can see the hole through Spot++

• Beamline commissioning how-to.