An Electron Bunch Compression Scheme for a Superconducting Radio Frequency Linear Accelerator Driven Light Source

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We describe an electron bunch compression scheme suitable for use in a light source driven by a superconducting radio frequency (SRF) linac. The key feature is the use of a recirculating linac to perform the initial bunch compression. Phasing of the second pass beam through the linac is chosen to de-chirp the electron bunch prior to acceleration to the final energy in an SRF linac ('afterburner'). The final bunch compression is then done at maximum energy. This scheme has the potential to circumvent some of the most technically challenging aspects of current longitudinal matches; namely transporting a fully compressed, high ... continued below

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C. Tennant, S.V. Benson, D. Douglas, P. Evtushenko, R.A. Legg September 1, 2011.

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We describe an electron bunch compression scheme suitable for use in a light source driven by a superconducting radio frequency (SRF) linac. The key feature is the use of a recirculating linac to perform the initial bunch compression. Phasing of the second pass beam through the linac is chosen to de-chirp the electron bunch prior to acceleration to the final energy in an SRF linac ('afterburner'). The final bunch compression is then done at maximum energy. This scheme has the potential to circumvent some of the most technically challenging aspects of current longitudinal matches; namely transporting a fully compressed, high peak current electron bunch through an extended SRF environment, the need for a RF harmonic linearizer and the need for a laser heater. Additional benefits include a substantial savings in capital and operational costs by efficiently using the available SRF gradient.

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  • IPAC2011, 4-9 Sep 2011, San Sebastian, Spain

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  • Report No.: JLAB-FEL-11-1394
  • Report No.: DOE/OR/23177-1904
  • Grant Number: AC05-06OR23177
  • Office of Scientific & Technical Information Report Number: 1029312
  • Archival Resource Key: ark:/67531/metadc834856

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  • September 1, 2011

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  • May 19, 2016, 3:16 p.m.

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  • Aug. 3, 2016, 3:15 p.m.

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C. Tennant, S.V. Benson, D. Douglas, P. Evtushenko, R.A. Legg. An Electron Bunch Compression Scheme for a Superconducting Radio Frequency Linear Accelerator Driven Light Source, article, September 1, 2011; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc834856/: accessed December 9, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.