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| MOP003 |
Optimal Design and Fluid-Solid Coupling Thermal Analysis of SC200 Superconducting Proton Cyclotron Electrostatic Deflector |
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- Y. Xu, Y. Chen, K.Z. Ding, X.Y. Huang, J. Li, K. Pei, Y. Song
ASIPP, Hefei, People’s Republic of China
- K. Gu
HFCIM, HeFei, 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).
In recent years, the study of proton therapy equipment has received increasing attention in China. Hefei CAS Ion Medical and Technical Devices Co., Ltd. (HFCIM) is developing a proton medical device based on the super-conducting proton cyclotron. The electrostatic deflector (ESD) is the key extraction component of the SC200 superconducting cyclotron, which uses a high-intensity electric field to bend the beam from the track. The fierce interaction between the proton beam and the deflector septum, causes a great loss of beam and unwanted excess heat accumulation and radiation. In order to minimize the risk of damage caused by the proton beam loss, the fluid solid-thermal coupling analysis of the deflector was per-formed by applying computational fluid dynamics (CFD) on ANSYS. The maximum temperatures of the septum in various cases of the cooling water speed, the septum thickness and material have been investigated respective-ly. The result based on analysis provide a valuable refer-ence for the further optimization on the material selection and structural design for ESD.
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Poster MOP003 [0.735 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP003
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| About • |
paper received ※ 15 September 2019 paper accepted ※ 24 September 2019 issue date ※ 20 June 2020 |
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| MOP004 |
Beam Dynamics Simulation of the Extraction for a Superconducting Cyclotron SC240 |
31 |
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- Z. Wu, K.Z. Ding, J. Li, Y. Song
ASIPP, Hefei, People’s Republic of China
- Z. Wang
HFCIM, HeFei, People’s Republic of China
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In order to diversify the company’s cyclotron, a design study has been carried out on a 240 MeV superconducting cyclotron SC240 for proton therapy, which is based on our experience in design of SC200. In order to increase turn separation and extraction efficiency, resonant precessional extraction method is employed in the extraction system. A first harmonic field consistent with the Gaussian distribution is added to introduce beam precessional motion. Its effects on phase space evolution and turn separation increase is studied by a high efficiency beam dynamics simulation code. According to the study, its amplitude and phase have been optimized to meet the requirements of extraction beam dynamics. Based on beam dynamics simulation, the parameters of extraction system elements (two electrostatic deflectors and six magnetic channels) are chosen. Besides, the effects of sectors spiral direction on beam extraction are studied. Extraction efficiencies and beam parameters have been calculated.
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Poster MOP004 [1.696 MB]
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| DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-Cyclotrons2019-MOP004
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| About • |
paper received ※ 14 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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