Design and Commissioning of RF System for SC200 Cyclotron
| Autor: | Chen, Gen, Calabretta, Luciano, Caruso, Antonio, Chao, Chujie, Chen, Yonghua, Ding, Kaizhong, Karamyshev, Oleg, Karamysheva, Galina, Liu, Guang, Long, Xuyun, Peng, Zhen, Shirkov, Grigori, Song, Yuntao, Yu, Chuansong, Zhang, Xin, Zhao, Yanping |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: | |
| DOI: | 10.18429/jacow-cyclotrons2019-mop001 |
| Popis: | 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. Proceedings of the 22nd International Conference on Cyclotrons and their Applications, Cyclotrons2019, Cape Town, South Africa |
| Databáze: | OpenAIRE |
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