High gradient RF test results of S-band and C-band cavities for medical linear accelerators

Degiovanni, A.; Bonomi, R.; Garlasche, M.; Verdu-Andres, S.; Wegner, R.; Amaldi, U.

doi:10.1016/j.nima.2018.01.079

Title: High gradient RF test results of S-band and C-band cavities for medical linear accelerators

Abstract

TERA Foundation has proposed and designed hadrontherapy facilities based on novel linacs, i.e. high gradient linacs which accelerate either protons or light ions. The overall length of the linac, and therefore its cost, is almost inversely proportional to the average accelerating gradient. With the scope of studying the limiting factors for high gradient operation and to optimize the linac design, TERA, in collaboration with the CLIC Structure Development Group, has conducted a series of high gradient experiments. The main goals were to study the high gradient behavior and to evaluate the maximum gradient reached in 3 and 5.7 GHz structures to direct the design of medical accelerators based on high gradient linacs. Lastly, this paper summarizes the results of the high power tests of 3.0 and 5.7 GHz single-cell cavities.

Authors:

Degiovanni, A. ^[1]; Bonomi, R. ^[1]; Garlasche, M. ^[1]; Verdu-Andres, S. ^[1]; Wegner, R. ^[1]; Amaldi, U. ^[1]

TERA Foundation, Novara (Italy)

Publication Date:: 2018-02-09

Research Org.:: Brookhaven National Lab. (BNL), Upton, NY (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP)

OSTI Identifier:: 1430887

Report Number(s):: BNL-203388-2018-JAAM
Journal ID: ISSN 0168-9002; TRN: US1802630

Grant/Contract Number:: SC0012704

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: 890; Journal Issue: C; Journal ID: ISSN 0168-9002

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 43 PARTICLE ACCELERATORS; Medical accelerators; Hadrontherapy; Cyclinac; Linac; RF cavity; Breakdown rate

Citation Formats


                    Degiovanni, A., Bonomi, R., Garlasche, M., Verdu-Andres, S., Wegner, R., and Amaldi, U. High gradient RF test results of S-band and C-band cavities for medical linear accelerators.  United States: N. p., 2018. 
Web.  doi:10.1016/j.nima.2018.01.079.

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                    Degiovanni, A., Bonomi, R., Garlasche, M., Verdu-Andres, S., Wegner, R., & Amaldi, U. High gradient RF test results of S-band and C-band cavities for medical linear accelerators.  United States.  https://doi.org/10.1016/j.nima.2018.01.079

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                    Degiovanni, A., Bonomi, R., Garlasche, M., Verdu-Andres, S., Wegner, R., and Amaldi, U. Fri .  
"High gradient RF test results of S-band and C-band cavities for medical linear accelerators".  United States.  https://doi.org/10.1016/j.nima.2018.01.079.  https://www.osti.gov/servlets/purl/1430887.

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@article{osti_1430887,

  title        = {High gradient RF test results of S-band and C-band cavities for medical linear accelerators},

  author       = {Degiovanni, A. and Bonomi, R. and Garlasche, M. and Verdu-Andres, S. and Wegner, R. and Amaldi, U.},

  abstractNote = {TERA Foundation has proposed and designed hadrontherapy facilities based on novel linacs, i.e. high gradient linacs which accelerate either protons or light ions. The overall length of the linac, and therefore its cost, is almost inversely proportional to the average accelerating gradient. With the scope of studying the limiting factors for high gradient operation and to optimize the linac design, TERA, in collaboration with the CLIC Structure Development Group, has conducted a series of high gradient experiments. The main goals were to study the high gradient behavior and to evaluate the maximum gradient reached in 3 and 5.7 GHz structures to direct the design of medical accelerators based on high gradient linacs. Lastly, this paper summarizes the results of the high power tests of 3.0 and 5.7 GHz single-cell cavities.},

  doi          = {10.1016/j.nima.2018.01.079},

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

  number       = C,

  volume       = 890,

  place        = {United States},

  year         = {2018},

  month        = {2}

}

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Figures / Tables:

Figure 1: Inner shape of the S-band (3 GHz) cell structure. The electric field lines are visible in the left figure obtained from simulations with the code Superfish.

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