Positron beam position measurement for a beam containing both positrons and electrons

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Positron beam position measurement for the Advanced Photon Source (APS) linac beam is affected by the presence of electrons that are also captured and accelerated along with the positrons. This paper presents a method of measuring positron position in a beam consisting of alternating bunches of positrons and electrons. The method is based on Fourier analysis of a stripline signal at the bunching and first harmonic frequencies. In the presence of a mixed species beam, a certain linear combination of bunching and first harmonic signals depends only on the position and charge of one specie of particle. A formula is ... continued below

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8 p.

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Sereno, N.S. & Fuja, R. August 1, 1996.

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Description

Positron beam position measurement for the Advanced Photon Source (APS) linac beam is affected by the presence of electrons that are also captured and accelerated along with the positrons. This paper presents a method of measuring positron position in a beam consisting of alternating bunches of positrons and electrons. The method is based on Fourier analysis of a stripline signal at the bunching and first harmonic frequencies. In the presence of a mixed species beam, a certain linear combination of bunching and first harmonic signals depends only on the position and charge of one specie of particle. A formula is derived for the stripline signal at all harmonics of the bunching frequency and is used to compute expected signal power at the bunching and first harmonic frequencies for typical electron and positron bunch charges. The stripline is calibrated by measuring the signal power content at the bunching and first harmonic frequencies for a single species beam. A circuit is presented that will be used with an APS positron linac stripline beam position monitor to detect the bunching and first harmonic signals for a beam of positrons and electrons.

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8 p.

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INIS; OSTI as DE96012794

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  • 7. workshop on beam instrumentation, Argonne, IL (United States), 6-9 May 1996

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  • Other: DE96012794
  • Report No.: ANL/ASD/CP--89465
  • Report No.: CONF-9605173--9
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 270801
  • Archival Resource Key: ark:/67531/metadc666430

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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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  • August 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • Dec. 15, 2015, 6:44 p.m.

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Sereno, N.S. & Fuja, R. Positron beam position measurement for a beam containing both positrons and electrons, article, August 1, 1996; Illinois. (digital.library.unt.edu/ark:/67531/metadc666430/: accessed June 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.