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| PT15 |
High current precision long pulse electron beam position monitor
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193 |
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- S.D. Nelson, Y.J. Chen, T. Fessenden, C. Holmes
LLNL, Lawrence Livermore National Laboratory, Livermore, CA, USA
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Precision high current long pulse electron beam position
monitoring has typically experienced problems with high
Q sensors, sensors damped to the point of lack of precision,
or sensors that interact substantially with any beam
halo thus obscuring the desired signal. As part of the
effort to develop a multi-axis electron beam transport system
using transverse electromagnetic stripline kicker technology,
it is necessary to precisely determine the
position and extent of long high energy beams for accurate
beam position control (6 - 40 MeV, 1 - 4 kA, 2 μs
beam pulse, sub millimeter beam position accuracy.)
The kicker positioning system utilizes shot-to-shot adjustments
for reduction of relatively slow (< 20 MHz) motion
of the beam centroid. The electron beams passing through
the diagnostic systems have the potential for large halo
effects that tend to corrupt position measurements.
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