Cascading RF deflectors in compact beam spreader schemes

Doolittle, L.; Placidi, M.; Emma, P.; Ratti, A.; De Silva, S. U.; Olave, R. G.; Delayen, J. R.

doi:10.1016/j.nima.2018.04.039

Title: Cascading RF deflectors in compact beam spreader schemes

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Abstract

This study describes beam distribution schemes based on transverse electric field radio-frequency deflectors (RFD) as fast-switching devices and provides numerical relationships between their respective frequencies and phases. The adoption of compact transverse deflecting cavities represents an ideal solution for the design of high repetition rate ( $>$ 1 MHz), compact beam distribution systems. While directly applicable to modern FEL facilities, this approach also provides opportunities for expanding existing beam delivery systems with additional experimental areas simultaneously feeding multiple beamlines. We derive the formalism for cascading RFDs by adopting the proper choice of deflector frequencies which can generate a large variety of beam switch yard topologies. Finally, we present for reference a potential application operating at an rf frequency of 325 MHz with the comparison of three possible distinct compact rf deflectors: a superconducting rf-dipole, a normal conducting rf-dipole, and a normal conducting 4-rod design.

Authors:

Doolittle, L. ^[1]; Placidi, M. ^[1]; Emma, P. ^[2]; Ratti, A. ^[1]; De Silva, S. U. ^[3]; Olave, R. G. ^[3]; Delayen, J. R. ^[3]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Old Dominion Univ., Norfolk, VA (United States). Center for Accelerator Science. Dept. of Physics

Publication Date:: 2018-04-25

Research Org.:: SLAC National Accelerator Lab., Menlo Park, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Old Dominion Univ., Norfolk, VA (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

OSTI Identifier:: 1461970

Alternate Identifier(s):: OSTI ID: 1582949

Grant/Contract Number:: AC02-76SF00515; AC02-05CH11231; 122642

Resource Type:: Accepted Manuscript

Journal Name:: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

Additional Journal Information:: Journal Volume: 899; Journal ID: ISSN 0168-9002

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; beam injection; particle accelerator; superconducting cavity; beam splitting; rf deflector

Citation Formats


                    Doolittle, L., Placidi, M., Emma, P., Ratti, A., De Silva, S. U., Olave, R. G., and Delayen, J. R. Cascading RF deflectors in compact beam spreader schemes.  United States: N. p., 2018. 
Web.  doi:10.1016/j.nima.2018.04.039.

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                    Doolittle, L., Placidi, M., Emma, P., Ratti, A., De Silva, S. U., Olave, R. G., & Delayen, J. R. Cascading RF deflectors in compact beam spreader schemes.  United States.  https://doi.org/10.1016/j.nima.2018.04.039

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                    Doolittle, L., Placidi, M., Emma, P., Ratti, A., De Silva, S. U., Olave, R. G., and Delayen, J. R. Wed .  
"Cascading RF deflectors in compact beam spreader schemes".  United States.  https://doi.org/10.1016/j.nima.2018.04.039.  https://www.osti.gov/servlets/purl/1461970.

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@article{osti_1461970,

  title        = {Cascading RF deflectors in compact beam spreader schemes},

  author       = {Doolittle, L. and Placidi, M. and Emma, P. and Ratti, A. and De Silva, S. U. and Olave, R. G. and Delayen, J. R.},

  abstractNote = {This study describes beam distribution schemes based on transverse electric field radio-frequency deflectors (RFD) as fast-switching devices and provides numerical relationships between their respective frequencies and phases. The adoption of compact transverse deflecting cavities represents an ideal solution for the design of high repetition rate (> 1 MHz), compact beam distribution systems. While directly applicable to modern FEL facilities, this approach also provides opportunities for expanding existing beam delivery systems with additional experimental areas simultaneously feeding multiple beamlines. We derive the formalism for cascading RFDs by adopting the proper choice of deflector frequencies which can generate a large variety of beam switch yard topologies. Finally, we present for reference a potential application operating at an rf frequency of 325 MHz with the comparison of three possible distinct compact rf deflectors: a superconducting rf-dipole, a normal conducting rf-dipole, and a normal conducting 4-rod design.},

  doi          = {10.1016/j.nima.2018.04.039},

  journal      = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},

  number       = ,

  volume       = 899,

  place        = {United States},

  year         = {2018},

  month        = {4}

}

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