PAC09 - List of Authors (Heifets, S.A.)

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Heifets, S.A.

Paper	Title	Page
TH6REP035	Beam Diagnostic by Outside Beam Chamber Fields	4024
	A. Novokhatski, S.A. Heifets SLAC, Menlo Park, California A.V. Aleksandrov ORNL, Oak Ridge, Tennessee
	Funding: work supported by the Department of Energy under contract number DE-AC03-76SF00515 and DE-AC05 Fields induced by a beam and penetrated outside the beam pipe can be used for a beam diagnostic. Wires placed in longitudinal slots in the outside wall of the beam pipe can work as a beam pickup. This has a very small beam-coupling impedance and avoids complications of having a feed-through. The signal can be reasonably high at low frequencies. We calculate the beam-coupling impedance due to a long longitudinal slot in the resistive wall and the signal induced in a wire placed in such a slot and shielded by a thin screen from the beam. We present a field waveform at the outer side of a beam pipe, obtained as a result of calculations and measurements. Such kind of diagnostic can be used in storage rings, synchrotron light sources, and free electron lasers, like LINAC coherent light source.

Paper

Title

Page

TH6REP035

Beam Diagnostic by Outside Beam Chamber Fields

4024

A. Novokhatski, S.A. Heifets
SLAC, Menlo Park, California
A.V. Aleksandrov
ORNL, Oak Ridge, Tennessee

Funding: work supported by the Department of Energy under contract number DE-AC03-76SF00515 and DE-AC05

Fields induced by a beam and penetrated outside the beam pipe can be used for a beam diagnostic. Wires placed in longitudinal slots in the outside wall of the beam pipe can work as a beam pickup. This has a very small beam-coupling impedance and avoids complications of having a feed-through. The signal can be reasonably high at low frequencies. We calculate the beam-coupling impedance due to a long longitudinal slot in the resistive wall and the signal induced in a wire placed in such a slot and shielded by a thin screen from the beam. We present a field waveform at the outer side of a beam pipe, obtained as a result of calculations and measurements. Such kind of diagnostic can be used in storage rings, synchrotron light sources, and free electron lasers, like LINAC coherent light source.