Simple Low-Frequency Beam Pickup

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Description

Detection of the field induced by a beam outside of the beam pipe can be used as a beam diagnostic. Wires placed in longitudinal slots in the outside wall of the beam pipe can be used as a beam pickup. This has a very small beam-coupling impedance and avoids complications of having a feedthrough. The signal can be reasonably high at low frequencies. We present a field waveform at the outer side of a beam pipe, obtained as a result of calculations and measurements. We calculate the beam-coupling impedance due to a long longitudinal slot in the resistive wall and ... continued below

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9 pages

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Novokhatski, A.; Heifets, S.; /SLAC; Aleksandrov, A. & Ridge, /Oak October 12, 2011.

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Detection of the field induced by a beam outside of the beam pipe can be used as a beam diagnostic. Wires placed in longitudinal slots in the outside wall of the beam pipe can be used as a beam pickup. This has a very small beam-coupling impedance and avoids complications of having a feedthrough. The signal can be reasonably high at low frequencies. We present a field waveform at the outer side of a beam pipe, obtained as a result of calculations and measurements. 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. These results should be relevant for impedance calculations of the slot in an antechamber and for slots in the PEP-II distributed ion pump screens. The design of the low-frequency beam position monitor is very simple. It can be used in storage rings, synchrotron light sources, and free electron lasers, like LINAC coherent light source.

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9 pages

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  • Journal Name: Phys.Rev.ST Accel.Beams 11:114401,2008; Journal Volume: 11; Journal Issue: 11

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  • Report No.: SLAC-PUB-14633
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 1027214
  • Archival Resource Key: ark:/67531/metadc829991

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • October 12, 2011

Added to The UNT Digital Library

  • May 19, 2016, 3:16 p.m.

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  • Dec. 1, 2016, 7:58 p.m.

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Novokhatski, A.; Heifets, S.; /SLAC; Aleksandrov, A. & Ridge, /Oak. Simple Low-Frequency Beam Pickup, article, October 12, 2011; United States. (digital.library.unt.edu/ark:/67531/metadc829991/: accessed August 15, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.