Preliminary calculations of ballistic bunch compression with thermionic cathode rf guns

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Preliminary calculations using the computer code PARMELA indicate that it is possible to achieve peak currents on the order of 1 kA using a thermionic-cathode rf gun and ballistic bunch compression. In contrast to traditional magnetic bunching schemes, ballistic bunch compression uses a series of rf cavities to modify the energy profile of the beam and properly chosen drifts to allow the bunching to occur naturally. The method, suitably modified, should also be directly applicable to photoinjector rf guns. Present work is focusing on simultaneously compressing the bunch while reducing the emittance of the electron beam. At present, the calculated ... continued below

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10 p.

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Lewellen, J.W. & Milton, S. September 1, 1997.

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Description

Preliminary calculations using the computer code PARMELA indicate that it is possible to achieve peak currents on the order of 1 kA using a thermionic-cathode rf gun and ballistic bunch compression. In contrast to traditional magnetic bunching schemes, ballistic bunch compression uses a series of rf cavities to modify the energy profile of the beam and properly chosen drifts to allow the bunching to occur naturally. The method, suitably modified, should also be directly applicable to photoinjector rf guns. Present work is focusing on simultaneously compressing the bunch while reducing the emittance of the electron beam. At present, the calculated normalized rms emittance is in the neighborhood of 6.8 {pi} mm mrad with a peak current of 0.88 kA, and a peak bunch charge of 0.28 nC from a thermionic-cathode gun.

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10 p.

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INIS; OSTI as DE97053955

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  • Annual meeting of the Society of Photo-Optical Instrumentation Engineers, San Diego, CA (United States), 27 Jul - 1 Aug 1997

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  • Other: DE97053955
  • Report No.: ANL/ASD/CP--94043
  • Report No.: CONF-970706--
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 555231
  • Archival Resource Key: ark:/67531/metadc690531

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  • September 1, 1997

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Dec. 16, 2015, 1:08 p.m.

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Lewellen, J.W. & Milton, S. Preliminary calculations of ballistic bunch compression with thermionic cathode rf guns, article, September 1, 1997; Illinois. (digital.library.unt.edu/ark:/67531/metadc690531/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.