Vacuum system of HIRFL's cyclotrons
文献类型：会议论文
| 作者 | Yang, X.T. ; Zhang, J.H.; You, Z.M.; Meng, J.
|
| 出版日期 | 2010 |
| 会议地点 | Lanzhou, China |
| 页码 | 195-196 |
| 英文摘要 | HIRFL has 2 cyclotrons: a sector focus cyclotron (SFC) and a separate sector cyclotron (SSC). SFC was built in 1957. In the past 50 years, the vacuum system of SFC has been upgraded for three times. The vacuum chamber was redesigned to double-deck at the third upgrade. The working pressure in beam chamber was improved from 10-6mbar to 10-8mbar. SFC has delivered Pb, Bi and U beams in the past few years since the last upgrading of its vacuum chamber. SSC began to operate in 1987. The vacuum chamber of SSC has a volume of 100m3. 8 cryopumps keep the pressure from 5×10-7mbar to 8×10-8mbar depending on the used pump numbers (2∼8). In the past 20 years, because of the contamination of oil vapour and leaks occurred in some components inside the SSC vacuum chamber, the vacuum condition has worsened than the beginning. It is a big problem to accelerate the heavier ions. The upgrade for the SSC vacuum system will be an urgent task for us. The rough pumping systems of both SFC and SSC have been rebuilt recently. As a result, the oil vapour in two cyclotrons will be eliminated and the vacuum condition of them will be improved. A new small cyclotron will be built in HIRFL as an injector of the Heavy Ion Therapy Facility in Lanzhou (HITFiL). The brief introduction of the vacuum system design is given in the paper. |
| 会议录 | 19th International Conference on Cyclotrons and Their Applications, CYCLOTRONS 2010
 |
| 会议录出版者 | Institute of Modern Physics |
| 源URL | [http://119.78.100.186/handle/113462/63932]  |
| 专题 | 中国科学院近代物理研究所 |
| 作者单位 | Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China |
| 推荐引用方式 GB/T 7714 | Yang, X.T.,Zhang, J.H.,You, Z.M.,et al. Vacuum system of HIRFL's cyclotrons[C]. 见:. Lanzhou, China. |
入库方式： OAI收割
来源：近代物理研究所
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