Tuesday, Mar. 29: SWING Shift

From Hall A Wiki
Jump to: navigation, search

Go back to Daily Run Plan Daily Run Plans


  • MCC restore the beam Hall-A
  • Spot++ for beam centering with C-hole target
  • repair 5pass separator

Specific mission

  • Note:

1/ Spin-dance (Moller measurement)


3/ Any chance of opportunity of good beam for physics
(beam goes straight ! not through chicane)
DVCS: Kin_48_4

- 15uA
- LH2 target
- Calo_theta= 10.1(deg), Distance = 2.5m (from target) - LHRS=3.36GeV, angle=24.925(deg), Q1/Q2/Q3=1916.640(readout:1900)/1600/1600 (Q1 regul.OFF)
- RHRS=2.204GeV, angle=48.75(deg)
- PreScaleR : PS1=PS2=PS3=1, && PS8=200
- PreScaleL : PS9 =1, + DVCS config.

- Raster : 2x2mm^2

Tentative plan:

Arc energy measurement : Doug (Morning)
Moller measurement : Sasha (Afternoon)

Establish the beam through Compton chicane: Dave & Yves

MCC beam study

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++