ICAP 2002 Abstracts and Posters
Corkscrew Motion Estimate for A High Current LIA
Abstract
A high current linear induction accelerator now is being
constructed at Institute of Fluid Physics. It consists of
18 blocks, totally 72 induction accelerating cells, and 18
connection cells with ports for beam diagnostic hardware
and vacuum pump. The goal of the facility is to obtain high
quality, high current pulse electron beams. The corkscrew
motion caused by chromatic aberration and misalignment of a
focusing system is unavoidable, some measures to control
the corkscrew must be taken. At first magnetic alignment is
performed by using pulsed-wire technique very carefully,
then the natural tilt errors is corrected by a pair of
steering coil, which is located inside the cell, after that
based on the alignment data a simple estimate of the beam
centroid motion has been down by transfer matrix algorithm.
In this paper, the calculated results and analysis are
presented.
Wenwei Zhang ,Kaizhi Zhang ,Linwen Zhang,Jianjun Deng Institute of Fluid Physics, CAEP P.O.Box 919-106 MianYiang, Sichuan 621900, P.R.China
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