Beam Diagnostic by Outside Beam Chamber Fields

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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 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 ... continued below

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3 pages

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Novokhatski, A; Heifets, S.; /SLAC; Aleksandrov, A. & /SNS Project, Oak Ridge July 6, 2009.

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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 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.

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3 pages

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  • Contributed to Particle Accelerator Conference (PAC 09), Vancouver, BC, Canada, 4-8 May 2009

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  • Report No.: SLAC-PUB-13698
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 958572
  • Archival Resource Key: ark:/67531/metadc926598

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  • July 6, 2009

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 15, 2016, 3:21 p.m.

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Novokhatski, A; Heifets, S.; /SLAC; Aleksandrov, A. & /SNS Project, Oak Ridge. Beam Diagnostic by Outside Beam Chamber Fields, article, July 6, 2009; United States. (digital.library.unt.edu/ark:/67531/metadc926598/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.