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5.3 Central Tracker R&Ds - Space-Charge Effect



Effect of beam current on reconstructed position.

Difference of reconstructed laser-light position when beam is on and that when beam is off as function of beam current. Shift increases as beam current increses as a result of space-charge effect. This drift is much larger than position resolution of 100 micron, and can be a big trouble if beam repitition is more than 150Hz.

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yoshiaki.fujii@kek.jp, July 10, 2002 at 5th ACFA LCWS at Tokyo