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| MOP001 |
Design and Commissioning of RF System for SC200 Cyclotron |
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- G. Chen, C. Chao, Y. Chen, K.Z. Ding, G. Liu, X.Y. Long, Z. Peng, Y. Song, C. Yu, X. Zhang, Y. Zhao
ASIPP, Hefei, People’s Republic of China
- L. Calabretta, A.C. Caruso
INFN/LNS, Catania, Italy
- O. Karamyshev
JINR/DLNP, Dubna, Moscow region, Russia
- G.A. Karamysheva, G. Shirkov
JINR, Dubna, Moscow Region, Russia
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The SC200 proton therapy superconducting cyclotron is currently under construction by ASIPP (Hefei, China) and JINR (Dubna, Russia). The radio frequency (RF) system which provides an accelerating electric field for the particles, has been designed and tested in a high-power commissioning. The RF system consists of RF cavity, Low-level RF control system, RF source, transmission network and so on. The main performances of RF cavity meet design and use requirements in the cold test. The RF cavity achieved with an unload Q factor of 5200 at the resonant frequency of 91.5 MHz, 60 kV (Center)~120 kV (Extraction) accelerating voltage and coupling state of S11 <-30 dB. The low-level RF (LLRF) system has been tested with an amplitude stability of <0.2% and a phase stability of <0.1 degree in the high-power commissioning. What is more, the cavity operated in a ~50 kW continuous wave state after 4 weeks RF conditioning. Some risks have exposed at higher power test, but related solutions and improvements have been developed. In future work, the target of RF system is effective operation under the overall assembly of cyclotron after further optimization and RF conditioning.
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Poster MOP001 [0.720 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP001
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| About • |
paper received ※ 09 September 2019 paper accepted ※ 24 September 2019 issue date ※ 20 June 2020 |
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| MOP002 |
Recent Progress on Ion Source of SC200 Cyclotron |
24 |
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- Y. Zhao, G. Chen
ASIPP, Hefei, People’s Republic of China
- L. Calabretta
INFN/LNS, Catania, Italy
- O. Karamyshev
JINR/DLNP, Dubna, Moscow region, Russia
- G.A. Karamysheva, G. Shirkov
JINR, Dubna, Moscow Region, Russia
- S.W. Xu
USTC, Hefei, Anhui, People’s Republic of China
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Funding: National Natural Science Foundation of China under grant No. 11775258 & 11575237 and International Scientific and Technological Cooperation Project of Anhui (grant No. 1704e1002207).
A 200MeV compact superconducting cyclotron, named SC200, for proton therapy is under development by collaboration of ASIPP (Hefei, China) and JINR (Dubna, Russia). The ion source is a significant subsystem of the cyclotron. A hot cathode internal ion source has been designed and tested for SC200 cyclotron. The ion source has been successfully arc discharged on the test bench. The extracted beam current has been measured over 100 uA and filament lifetime of ion source exceeded 100 h, which indicated that the ion source meets the design requirements. The stability of the filament under strong magnetic field has also been tested and the differences between the two kinds of filament are compared.
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Poster MOP002 [0.519 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP002
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|
| About • |
paper received ※ 09 September 2019 paper accepted ※ 24 September 2019 issue date ※ 20 June 2020 |
|
| Export • |
reference for this paper using
※ BibTeX,
※ LaTeX,
※ Text/Word,
※ RIS,
※ EndNote (xml)
|
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| |