A Simple Beam Position Monitor System for CEBAF

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CEBAF is a recirculating linac where the beam passes several times through the linac structures. As a result, up to five beams of different energies may be present in the same linac vacuum chambers simultaneously. One method of distinguishing between the beams involves modulating the current for a time interval of less than one revolution period. In this paper, a very simple low cost beam position monitor system based on the detection of this modulation is presented. Initial results indicated that 1mm displacements for beam currents of 1 micro-amp can be measured. With the incorporation of several improvements to the ... continued below

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page(s) 455-496

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Rossmanith, Robert; Wise, Martice & Barry, Walter October 1, 1988.

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Description

CEBAF is a recirculating linac where the beam passes several times through the linac structures. As a result, up to five beams of different energies may be present in the same linac vacuum chambers simultaneously. One method of distinguishing between the beams involves modulating the current for a time interval of less than one revolution period. In this paper, a very simple low cost beam position monitor system based on the detection of this modulation is presented. Initial results indicated that 1mm displacements for beam currents of 1 micro-amp can be measured. With the incorporation of several improvements to the present monitor design, the sensitivity is expected to be increased to 1 mm for a 100 nA beam.

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page(s) 455-496

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  • Paper compiled for LINAC 88

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  • Report No.: CEBAF-PR-89-15
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 954125
  • Archival Resource Key: ark:/67531/metadc928001

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Office of Scientific & Technical Information Technical Reports

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  • October 1, 1988

Added to The UNT Digital Library

  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 7, 2016, 9:13 p.m.

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Rossmanith, Robert; Wise, Martice & Barry, Walter. A Simple Beam Position Monitor System for CEBAF, article, October 1, 1988; [Newport News, Virginia]. (digital.library.unt.edu/ark:/67531/metadc928001/: accessed July 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.