Dielectric Wakefield Accelerating Structure as a Source of Terahertz Coherent Cerenkov Radiation

Cook, A M; Rosenzweig, J B; Badakov, H; Travish, G; Tikhoplav, R; Williams, O B; England, R J; Thompson, M C

doi:10.1063/1.2409222

Title: Dielectric Wakefield Accelerating Structure as a Source of Terahertz Coherent Cerenkov Radiation

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Abstract

We discuss future experimental work proposed to study the performance of a cylindrical dielectric wakefield accelerating structure as a coherent Cerenkov radiation source at the Neptune laboratory at UCLA. The Cerenkov wakefield acceleration experiment carried out recently by UCLA/SLAC/USC, using the ultrashort and high charge beam (Q = 3 nC, {sigma}z = 20 micron) at the SLAC FFTB, demonstrated electromagnetic wakes at the few GV/m level. The motivation of our prospective experiment is to investigate the operation of a similar scenario using the comparatively long pulse, low charge beam (Q = 0.5 nC, {sigma}z = 200 micron) at UCLA Neptune. The field amplitude produced in this setup would be one to two orders of magnitude lower, at the few tens to few 100 MV/m level. Such a decelerating field would extract a significant amount of energy from a low-energy beam in a distance on the order of a few centimeters, allowing the use of short dielectric structures. We discuss details of the geometry and composition of the structures to be used in the experiment. We also examine the possibility of a future dedicated facility at UCLA Neptune based on a hybrid photoinjector currently in development. The intrinsic bunch compression capabilitiesmore »« less

Authors:

Cook, A M; Rosenzweig, J B; Badakov, H; Travish, G; Tikhoplav, R; Williams, O B; England, R J ^[1]; Thompson, M C ^[2]

UCLA Department of Physics and Astronomy, Los Angeles, CA 90095 (United States)
Lawrence Livermore National Laboratory, Livermore, CA 94550 (United States)

Publication Date:: Mon Nov 27 00:00:00 EST 2006

OSTI Identifier:: 20898762

Resource Type:: Journal Article

Journal Name:: AIP Conference Proceedings

Additional Journal Information:: Journal Volume: 877; Journal Issue: 1; Conference: 12. advanced accelerator concepts workshop, Lake Geneva, WI (United States), 10-15 Jul 2006; Other Information: DOI: 10.1063/1.2409222; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; ACCELERATION; CHERENKOV RADIATION; CYLINDRICAL CONFIGURATION; DIELECTRIC MATERIALS; GEOMETRY; OPERATION; PERFORMANCE; PULSES; RADIATION SOURCES; STANFORD LINEAR ACCELERATOR CENTER; THZ RANGE 01-100; UCLA; WAKEFIELD ACCELERATORS; WAVEGUIDES

Citation Formats


                    Cook, A M, Rosenzweig, J B, Badakov, H, Travish, G, Tikhoplav, R, Williams, O B, England, R J, and Thompson, M C. Dielectric Wakefield Accelerating Structure as a Source of Terahertz Coherent Cerenkov Radiation.  United States: N. p., 2006. 
        Web.  doi:10.1063/1.2409222.

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                    Cook, A M, Rosenzweig, J B, Badakov, H, Travish, G, Tikhoplav, R, Williams, O B, England, R J, & Thompson, M C. Dielectric Wakefield Accelerating Structure as a Source of Terahertz Coherent Cerenkov Radiation.  United States.  https://doi.org/10.1063/1.2409222

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                    Cook, A M, Rosenzweig, J B, Badakov, H, Travish, G, Tikhoplav, R, Williams, O B, England, R J, and Thompson, M C. 2006.  
        "Dielectric Wakefield Accelerating Structure as a Source of Terahertz Coherent Cerenkov Radiation".  United States.  https://doi.org/10.1063/1.2409222.

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@article{osti_20898762,

  title        = {Dielectric Wakefield Accelerating Structure as a Source of Terahertz Coherent Cerenkov Radiation},

  author       = {Cook, A M and Rosenzweig, J B and Badakov, H and Travish, G and Tikhoplav, R and Williams, O B and England, R J and Thompson, M C},

  abstractNote = {We discuss future experimental work proposed to study the performance of a cylindrical dielectric wakefield accelerating structure as a coherent Cerenkov radiation source at the Neptune laboratory at UCLA. The Cerenkov wakefield acceleration experiment carried out recently by UCLA/SLAC/USC, using the ultrashort and high charge beam (Q = 3 nC, {sigma}z = 20 micron) at the SLAC FFTB, demonstrated electromagnetic wakes at the few GV/m level. The motivation of our prospective experiment is to investigate the operation of a similar scenario using the comparatively long pulse, low charge beam (Q = 0.5 nC, {sigma}z = 200 micron) at UCLA Neptune. The field amplitude produced in this setup would be one to two orders of magnitude lower, at the few tens to few 100 MV/m level. Such a decelerating field would extract a significant amount of energy from a low-energy beam in a distance on the order of a few centimeters, allowing the use of short dielectric structures. We discuss details of the geometry and composition of the structures to be used in the experiment. We also examine the possibility of a future dedicated facility at UCLA Neptune based on a hybrid photoinjector currently in development. The intrinsic bunch compression capabilities and improved beam parameters ({sigma}z = 100 micron, Q = 1 nC) of the photoinjector would allow the creation of a high power radiation source in the terahertz regime.},

  doi          = {10.1063/1.2409222},

  url          = {https://www.osti.gov/biblio/20898762},
  journal      = {AIP Conference Proceedings},

  issn         = {0094-243X},

  number       = 1,

  volume       = 877,

  place        = {United States},

  year         = {Mon Nov 27 00:00:00 EST 2006},

  month        = {Mon Nov 27 00:00:00 EST 2006}

}

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