Initial tests of an AC dipole for the Tevatron

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The AC dipole is a device to diagnose transverse motions of a beam. It can achieve large-amplitude oscillations without two inevitable problems of conventional kicker/pinger magnets: decoherence and emittance growth. While not the first synchrotron to operate with an AC dipole, the Tevatron can now make use of its recently upgraded BPM system, providing unprecedented resolution for use with an AC dipole, to measure both linear and nonlinear properties of the accelerator. Plans are to provide AC dipole systems for both transverse degrees of freedom. Preliminary tests have been done using an audio power amplifier with an existing vertical pinger ... continued below

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9 pages

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Miyamoto, R.; U., /Texas; Jansson, A.; /Fermilab; Kopp, S.; U., /Texas et al. June 1, 2006.

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Description

The AC dipole is a device to diagnose transverse motions of a beam. It can achieve large-amplitude oscillations without two inevitable problems of conventional kicker/pinger magnets: decoherence and emittance growth. While not the first synchrotron to operate with an AC dipole, the Tevatron can now make use of its recently upgraded BPM system, providing unprecedented resolution for use with an AC dipole, to measure both linear and nonlinear properties of the accelerator. Plans are to provide AC dipole systems for both transverse degrees of freedom. Preliminary tests have been done using an audio power amplifier with an existing vertical pinger magnet, producing oscillation amplitudes up to 2{sigma} at 150 GeV. In this paper, we will present the configuration of this system. We also show the analysis of a first few data sets, including the direct measurement of beta functions at BPM locations.

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9 pages

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  • Journal Name: AIP Conf.Proc.868:402-410,2006; Conference: Presented at 12th Beam Instrumentation Workshop (BIW06), Fermilab, Batavia, Illinois, 1-4 May 2006

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  • Report No.: FERMILAB-CONF-06-165-AD
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 892297
  • Archival Resource Key: ark:/67531/metadc873588

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  • June 1, 2006

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 5, 2016, 9:21 p.m.

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Miyamoto, R.; U., /Texas; Jansson, A.; /Fermilab; Kopp, S.; U., /Texas et al. Initial tests of an AC dipole for the Tevatron, article, June 1, 2006; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc873588/: accessed September 24, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.