Microwave measurements of the BNL/SLAC/UCLA 1.6 cell photocathode rf gun

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The longitudinal accelerating field E. has been measured as a function of azimuthal angle in the full cell of the cold test model for the 1.6 cell BNL/SLAC/UCLA {number_sign}3 S-band RF Gun using a needle rotation/frequency perturbation technique. These measurements were conducted before and after symmetrizing the full cell with a vacuum pump out port and an adjustable short. Two different waveguide to full cell coupling schemes were studied. The dipole mode of the full cell is an order of magnitude less severe before symmetrization for the 0{theta}-coupling scheme. The multi-pole contribution to the longitudinal field asymmetry are calculated using ... continued below

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4 p.

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Palmer, D. T.; Miller, R. H.; Winick, H.; Wang, X. J.; Batchelor, K.; Woodle, M. et al. June 1995.

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The longitudinal accelerating field E. has been measured as a function of azimuthal angle in the full cell of the cold test model for the 1.6 cell BNL/SLAC/UCLA {number_sign}3 S-band RF Gun using a needle rotation/frequency perturbation technique. These measurements were conducted before and after symmetrizing the full cell with a vacuum pump out port and an adjustable short. Two different waveguide to full cell coupling schemes were studied. The dipole mode of the full cell is an order of magnitude less severe before symmetrization for the 0{theta}-coupling scheme. The multi-pole contribution to the longitudinal field asymmetry are calculated using standard Fourier series techniques. The Panofsky-Wenzel theorem is used in estimating the transverse emittance due to the multipole components of E{sub x}.

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4 p.

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INIS; OSTI as DE95013231

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  • 16. Institute of Electrical and Electronic Engineers (IEEE) particle accelerator conference, Dallas, TX (United States), 1-5 May 1995

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  • Other: DE95013231
  • Report No.: BNL--61851
  • Report No.: SLAC-PUB--95-6799;CONF-950512--162
  • Grant Number: AC02-76CH00016;AC03-76SF00515
  • Office of Scientific & Technical Information Report Number: 95573
  • Archival Resource Key: ark:/67531/metadc794762

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  • June 1995

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  • Dec. 19, 2015, 7:14 p.m.

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  • Jan. 6, 2016, 12:07 p.m.

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Palmer, D. T.; Miller, R. H.; Winick, H.; Wang, X. J.; Batchelor, K.; Woodle, M. et al. Microwave measurements of the BNL/SLAC/UCLA 1.6 cell photocathode rf gun, article, June 1995; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc794762/: accessed September 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.