Run plan/To do list - Tuesday, December 19 2017 - day shift

From HallCWiki
Revision as of 17:33, 18 December 2017 by Gaskelld (Talk | contribs) (Created page with "== 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...")

(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to: navigation, search

Notices

  1. SHMS DIPOLE MAX CURRENT IS 2100 A
  2. Do not rotate either SHMS or HMS if the HMS dipole current is above 2500 A
  3. The SHMS angle is currently 7.5 degrees. ONLY ROTATE TO LARGER ANGLES.
    1. Once we have rotated to larger angle, the minimum angle will be 10 degrees.
    2. Smaller SHMS angles will require an access and assistance from Steve Lassiter/Mike Fowler
  4. Nominal beam positions (for now): x=-1.0, y=-0.75 at IPM3H07C
  5. 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.)
 Take 30 minutes runs at 10 muA with various thresholds for the CER and PRESHOWER PID legs of the trigger (Expert: Eric P.)
     aa) Cherenkov Threshold: 40, 30 and then optimize
     bb) PrSh Lo: 40, 30 and then optimize
     cc) PrHi: 60, 40, 30(?)
     dd) ShLo: 40, 30