Beam operation
Contents
Contents
This page is a branch of the main AHCALTestBeamCERN2015 page. More specifically, is a part of the Operation section.
in the CESAR gui on the computer provided in the control room
loading a new beam file
open "BeamFileExplorer" (from "Files" menu if not open already)
- choose correct file
- for August:
- file 006 for 90 GeV pions
- file 005 for 70 GeV pions
- file 004 for 50 GeV pions
- file 009 for 30 GeV pions
- file 010 for 10 GeV pions
- click on "Load Beamfile"
- wait until everything turns green
- if some elements stay red, go to "Magnet Status" and set the corresponding magnets to the correct value wit "SET TO BEAM REF"
changing absorber
- in the "Obstacles" window (by clicking on red/white hurdle sign)
- TARGET01 should be "Air" (for all muon and pion runs)
- Absorber should be
- 18 mm lead for 50, 70 and 90 GeV pions
- 8 mm lead for 30 GeV pions
- 4 mm lead for 10 GeV pions
- Air for muons
setting the pressure for the Cherenkov detector
- in "Threshold scan" (little bulb with S symbol) check threshold pressure for protons and pions
- choose pressure just below proton threshold, at least 1 bar above pion threshold (if possible), maximum pressure is around 3 bar
- set this pressure in "Threshold status" (little bulb with green checkmark symbol)
