G2p shifts

Information for Shift Workers

• Expert contact list of phone numbers
• Runplan and Schedule
• Online Replay Guide
• The g2p DAQ
• The g2p Analysis Guide
• Setting the Spectrometer and Septa Magnets
• Conversion between Septa Current and Momentum (P_to_I) and (I_to_P)
• Quadrupole Cycling for g2p
• Run Sheets (LHRS RHRS)
• Shift Checklist (pdf)
• Slow Raster Procedure
• Hall A Dump Camera Light

Useful Links

• Beamline Component locations
• MCC Whiteboard +offsite access to logs (courtesy Brad)
• Hall A logbook
• g2p wiki
• d2n HowTo (Please note some info is out of date).
• Spring11 HowTo (Please note some info is out of date).
• Online Replay Guide (detailed) (Old Transversity Guide) (Please note some info is out of date).
• An example of an excellent Shift Leader Summary for reference.
• Hall A Moller

Notes

• Ask for beam off when modifying Septa Current or inserting/removing target.
• Change Septa in less than 50 A increments. Keep left and right matched when beam is on.
• Coda configuration: LHRSHAP, RHRSBUFF
• Log VDC efficiencies at least once per shift.
• Hall A current : Open Monticello / Wall / Hall A GUI, and look at the 1H00 BCM.
• For Hall A tools screen, on hacuser type "NewTools" which pops up EOSMenu. Select "HLAmain".
• For Stripchart, click toolbox on bottom of desktop menu
• Keep a stripchart running of the septa currents.
• Note: There is *always* one transitor fault on the right septa (bigbite powersupply).
• Note: IHWP1 flips the beam helicity. IHWP2 is passive (actually a full wave plate) and will not flip the helicity. The status of both should be recorded. The epics var for IHWP2 is IGL1I00DIOFLRD :13056 means the passive wave-plate is in. 8960 is out..