Author: Fanella, S.
Paper Title Page
MOPOGE07 High Power RF Transmission Lines of the Light Proton Therapy Linac 158
 
  • J.L. Navarro Quirante, D. Aguilera Murciano, S. Benedetti, G. Castorina, C. Cochrane, G. De Michele, J. Douthwaite, A. Eager, S. Fanella, M. Giles, D. Kaye, V.F. Khan, J. Mannion, J. Morris, J.F. Orrett, N. Pattalwar, E. Rose, D. Soriano Guillén
    AVO-ADAM, Meyrin, Switzerland
  
  The LIGHT (Linac for Im­age-Guided Hadron Ther­apy) ma­chine is de­signed to ac­cel­er­ate a pro­ton beam up to 230 MeV to treat deep seated tu­mours. The ma­chine con­sists of three dif­fer­ent kinds of ac­cel­er­a­tors: RFQ (Ra­dio-Fre­quency Quadru­pole), SCDTL (Side Cou­pled Drift Tube Linac) and CCL (Cou­pled Cav­ity Linac). These ac­cel­er­at­ing struc­tures are fed with RF power at 750 MHz (RFQ) and 3 GHz (SCDTLs and CCLs). This power is de­liv­ered to the ac­cel­er­at­ing struc­ture via the high power RF trans­mis­sion net­work (RF net­work). In ad­di­tion, the RF net­work needs to offer other func­tion­al­i­ties, like pro­tec­tion of the high RF power feed­ing sta­tions, power split­ting, phase and am­pli­tude con­trol and mon­i­tor­ing. The max­i­mum power han­dling of the RF net­work cor­re­sponds to a peak RF power of 8 MW and an av­er­age RF power of 9 kW. It func­tions ei­ther in Ul­tra-High Vac­uum (UHV) con­di­tions at an ul­ti­mate op­er­at­ing pres­sure of 10-7 mbar, or under pres­sur­ized gas. The above listed re­quire­ments in­volve dif­fer­ent chal­lenges. In this con­tri­bu­tion we ex­hibit the main as­pects to be con­sid­ered based on AVO ex­pe­ri­ence dur­ing the com­mis­sion­ing of the RF net­work units.  
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-LINAC2022-MOPOGE07  
About • Received ※ 22 August 2022 — Revised ※ 28 August 2022 — Accepted ※ 29 August 2022 — Issue date ※ 02 September 2022
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