Run plan/To do list - Tuesday, December 19 2017 - day shift
From HallCWiki
Notices
- SHMS DIPOLE MAX CURRENT IS 2100 A
- Do not rotate either SHMS or HMS if the HMS dipole current is above 2500 A
- The SHMS angle is currently 7.5 degrees. ONLY ROTATE TO LARGER ANGLES.
- Once we have rotated to larger angle, the minimum angle will be 10 degrees.
- Smaller SHMS angles will require an access and assistance from Steve Lassiter/Mike Fowler
- Nominal beam positions (for now): x=-1.0, y=-0.75 at IPM3H07C
- Be sure to fill out the beam time accounting - edit the form as necessary. The values "auto-filled" from EPICS are not always accurate.
Runplan
- Overview
Controlled access at 8:30 for target cooldown Continue owl shift program as needed: Check SHMS tune with carbon elastics at 7.5 degrees. Take data in HMS "parasitically" to check scintillator and PID thresholds in trigger.
- SHMS carbon elastics at 7.5 degrees - will check/establish SHMS tune
SHMS settings: P=2.214 GeV, Theta=7.45 degrees
- HMS threshold scan
HMS settings: P=1.0 geV, Theta=14.01 degrees
Take 15 minutes runs at 10 muA with HMS Hodoscopes discriminator thresholds at: 30 mV, 20 mV, 40 mV and 50 mV. (Expert: Simona M.)
Trigger Threshold Scan: Insert target 0.5% Carbon and take 15 minutes runs at 10 muA with various thresholds for the CER and PRESHOWER/SHOWER PID legs of the trigger (Expert: Eric P.)
HMS Threshold Scan
Run 1) CER 40, PRSH-LO 40, PRSH-HI 60, SH-LO 40 ---> These are the initial settings
Run 2) CER 30, PRSH-LO 30, PRSH-HI 50, SH-LO 30
Run 3) CER 25, PRSH-LO 25, PRSH-HI 40, SH-LO 25
Run 4) CER 20, PRSH-LO 20, PRSH-HI 30, SH-LO 20
Run 5) CER 15, PRSH-LO 15, PRSH-HI 20, SH-LO 15
Run 6) CER 10, PRSH-LO 10, PRSH-HI 10, SH-LO 10
SHMS Threshold Scan
Run 1) HGCER 40, PRSH-LO 40, PRSH-HI 60 ---> These are the initial settings
Run 2) HGCER 30, PRSH-LO 30, PRSH-HI 50
Run 3) HGCER 25, PRSH-LO 25, PRSH-HI 40
Run 4) HGCER 20, PRSH-LO 20, PRSH-HI 30
Run 5) HGCER 15, PRSH-LO 15, PRSH-HI 20
Run 6) HGCER 10, PRSH-LO 10, PRSH-HI 10
