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SHORT-RANGE WAKEFIELD CALCULATIONS FOR THE ION CLEARING ELECTRODES IN THE CORNELL ENERGY RECOVERY LINAC

Author
Xie, Yi
Abstract
The presence of trapped ions in the Cornell Energy Recovery Linac (ERL) can
lead to beam halo, particle loss, optical errors, or transverse and longitudinal
instabilities. DC clearing electrodes that create a sufficient voltage to draw ions
out of the beam potential are considered to be the most easily applicable measure to
cure these effects. However, due to the short length of electron bunches in the ERL
running modes, the power dissipated by the clearing electrodes can significantly
damage these. I have calculated the short-range wakefields of different types of
clearing electrodes and concluded that a tapered electrode design can be used.
Date Issued
2007-05-17Subject
Energy Recovery Linac, Ion clearing, Ion clearing electrodes, MAIFA, Numerical dispersion error, Wake field
Type
dissertation or thesis