Paper |
Title |
Page |
PM13 |
The PS Booster Fast Wire Scanner
|
122 |
|
- S. Burger, C. Carli, K. Priestnall, U. Raich
CERN, Geneva, Switzerland
|
|
|
The very tight emittance budget for LHC type beams makes precise
emittance measurements in the injector complex a necessity. The PS
machine uses 2 fast wire scanners per transverse plane for emittance
measurement of the circulating beams. In order to ease comparison the
same type of wire scanners have been newly installed in the upstream
machine, the PS Booster, where each of the 4 rings is equipped with 2
wire scanners measuring the horizontal and vertical profiles.
Those wire scanners use new and more modern control and readout
electronics featuring dedicated intelligent motor movement controllers,
which relieves the very stringent real time constraints due to the very
high speed of 20 m/s. In order to be able to measure primary beams at the
very low injection energy of the Booster (50 MeV) secondary emission
currents from the wire can be measured as well as secondary particle
flows at higher primary particle energies during and after acceleration.
The solution adopted for the control of the devices is described as well
as preliminary results obtained during measurements made in 2002.
|
|