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40Ca energy change procedure
This procedure was written for DRAGON 40Ca experiment which was running in November 2005. It might be useful for a future similar situation. Date: Nov 17, 2005
"IO" stands for ISAC Operator and "DRA" stands for DRAGON
IO:
- turn of the 35 MHz HEBT Buncher
- set the request energy with the PRAGUE
- rescale de optics
- deliver beam to DRAGON
DRA:
- set DRA:XSLITC:WIDTH = 1mm, POSITION = 0
- set DRA:MD1 maximizing the beam on DRA:FCCH
- ask IO for buncher ON
IO:
- turn on the buncher (amplitude around 300)
- set the buncher phase maximizing on DRA:FCCH (there are two phases 180 degrees appart, choose the one that gives the maximum current on DRA:FCCH)
- set the buncher amplitude maximizing the beam on DRA:FCC (around 200)
- deliver beam to DRAGON
The DTL is a variable energy LINAC composed by 5 accelerating tanks and 3 bunchers.
The tanks work at 0 degree phase. The bunchers work at -45 degree or at 0 degree.
The following are the characteristic maximum energy for each DTL RF device:
Tank 1 = 237 KeV/u
Buncher 1 = 254 KeV/u
Tank 2 = 439 KeV/u
Buncher 2 = 461 KeV/u
Tank 3 = 781 KeV/u
Buncher 3 = 803 KeV/u
Tank 4 = 1149 KeV/u
Tank 5 = 1530 KeV/u
