Author: Dolgashev, V.A.
Paper Title Page
MOPOPA22 High-Gradient Accelerating Structure for Hadron Therapy Linac, Operating at kHz Repetition Rates 126
 
  • S.V. Kutsaev, R.B. Agustsson, A.C. Araujo Martinez, A.Yu. Smirnov, S.U. Thielk
    RadiaBeam, Santa Monica, California, USA
  • V.A. Dolgashev
    SLAC, Menlo Park, California, USA
  • B. Mustapha, G. Ye
    ANL, Lemont, Illinois, USA
  
  Funding: This work was supported by the U.S. Department of Energy, Office of High Energy Physics, under STTR grant DE-SC0015717 and Accelerator Stewardship Grant, Proposal No. 0000219678.
Argonne National Laboratory and RadiaBeam have designed the Advanced Compact Carbon Ion Linac (ACCIL) for the acceleration of carbon an proton beams up to the energies of 450 MeV/u, required for image-guided hadron therapy. Recently, this project has been enhanced with the capability of fast tumour tracking and treatment through the 4D spot scanning technique. Such solution offers a promising approach to simultaneously reduce the cost and improve the quality of the treatment. In this paper, we report the design of an accelerating structure, capable of operating up to 1000 pulses per second. The linac utilizes an RF pulse compressor for use with commercially available klystrons, which will dramatically reduce the price of the system. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOPA22  
About • Received ※ 13 August 2022 — Revised ※ 19 August 2022 — Accepted ※ 29 August 2022 — Issue date ※ 01 September 2022
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THPOJO16 High Efficiency Traveling Wave Linac With Tunable Energy 727
 
  • V.A. Dolgashev, A.K. Krasnykh, A. Romero
    SLAC, Menlo Park, California, USA
  • P. Borchard
    Dymenso LLC, San Francisco, USA
  • R.A. Kostin, S.V. Kuzikov
    Euclid TechLabs, Solon, Ohio, USA
  
  Funding: US DOE Research Opportunities in Accelerator Stewardship DE-FOA-0002463
We will present a physics design of a compact, highly efficient, energy-tunable linac to generate up to 500 W of 10 MeV electron beam power for medical and security applications. This linac will employ a patented travelling wave accelerating structure with outside power flow which combines the advantages of high efficiency with energy tunability of traveling wave cavities. Unlike standing wave structures, the proposed structure has little power reflected back to the RF source, eliminating the need for a heavy, lossy waveguide isolator. In contrast to the side-coupled cavity designs, the proposed structure is symmetrical and therefore it does not have deflecting axial fields that impair the beam transport. The high shunt impedance will allow the linac to achieve an output energy of up to 10 MeV when powered by a compact commercial 9.3 GHz 1.7 MW magnetron. For pulse-to-pulse tuning of the beam output energy we will change of the beam-loaded gradient by varying the triode gun current. 		 
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-THPOJO16  
About • Received ※ 30 August 2022 — Revised ※ 01 September 2022 — Accepted ※ 07 September 2022 — Issue date ※ 16 September 2022
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