Design and study of a continuous wave RFQ for the BISOL high intensity deuteron driver linac
Design and study of a continuous wave RFQ for the BISOL high intensity deuteron driver linac
复制标题
BISOL 高强度氘核驱动直线加速器连续波 RFQ 的设计与研究
DOI：
10.1088/1748-0221/15/05/t05003
复制
发表时间：
2020-05
影响因子：
1.3
通讯作者：
Y.R.Lu
中科院分区：
文献类型：
--
作者：
H.P.Li;Z.Wang;Y.R.Lu
为北京同位素分离在线（BISOL）强流氘核驱动直线加速器设计了一个高强度四叶连续波（cw）振荡器。该加速器将25mA连续波氘束加速到3.0MeV，工作频率为162.5MHz。提出了三种基于不同策略的梁动力学设计方案，并进行了详细的比较，包括公差研究和误差分析，以评估它们。最终设计的光纤光栅长度为5.29 m，传输率为99.1%。叶片间电压从60 kV斜升到75 kV，最大基尔帕特里克因子为1.42，这是非常适度的，有利于cw操作模式。RFQ电磁设计是基于全长3D模型进行的，包括叶片调制、底切、π模稳定棒（PSL）和调谐器。通过改变叶片宽度和调整根切量，实现了正确的工作频率和电压斜坡。此外，还插入并优化了π模稳定棒（PSL），以增加模式分离并增强电压稳定性。射频功率损耗和有效并联阻抗分别为118 kW和210 kΩ·cm。此外，基于电磁场分析软件CST MWS、HFSS和ANSYS，对谐振腔进行了多物理场分析，以检查冷却系统、谐振腔的温升和变形以及连续工作时的频率偏移。最后，研究了谐振腔频率对冷却水温度的敏感性，得到了冷却水温度调谐系数，为谐振腔工作时的微调提供了依据。
A high intensity four-vane continue wave (cw) RFQ for the Beijing Isotope Separation On-Line (BISOL) high intensity deuteron driver linac has been designed. This RFQ will accelerate the 25 mA cw deuteron beam the 3.0 MeV with an operating frequency of 162.5 MHz. Three beam dynamics design schemes based on different strategies have been proposed and detailed comparisons, including tolerance study and error analysis, are performed to evaluate them. The final design of RFQ can achieve the requirements with a length of 5.29 m and the transmission of 99.1%. The inter-vane voltage is ramped from 60 kV to 75 kV and the maximum Kilpatrick factor is 1.42, which is very modest and beneficial to cw operation mode. The RFQ electromagnetic design is carried out based on the full-length 3D model, including vane modulation, undercuts, π-mode stabilization rods (PSLs) and tuners. The requirements of correct work frequency and voltage ramp are fulfilled by varying vane width and adjusting undercuts. In addition, the π-mode stabilization rods (PSLs) are inserted and optimized to increase mode separation and enhance voltage stabilization. The rf power loss and effective shunt impendence are 118 kW and 210 kΩ⋅m, respectively. In addition, multi-physics analysis of the cavity, based on the electromagnetic codes CST MWS, HFSS and ANSYS, has been carried out to check the cooling system, the temperature rise and deformation of the cavity, as well as the frequency shift in the cw operation. Finally, the frequency sensitivities to cooling water temperature are studied to obtain water temperature tuning coefficients, which will be used for fine tuning of the RFQ cavity during operation.
登录
查看更多内容
DOI：
10.1103/physrevstab.3.124201
发表时间：
2000-12
影响因子：
--
作者：
R. Duperrier
通讯作者：
R. Duperrier
DOI：
--
发表时间：
2010
期刊：
--
影响因子：
--
作者：
A. Pisent
通讯作者：
A. Pisent
DOI：
--
发表时间：
2018
期刊：
--
影响因子：
--
作者：
H. Li;Z. Wang;Y. Lu;M. Easton;K. Zhu;Q. Fu;P. Gan;Q. Tan
通讯作者：
H. Li;Z. Wang;Y. Lu;M. Easton;K. Zhu;Q. Fu;P. Gan;Q. Tan
DOI：
--
发表时间：
1998-12
期刊：
--
影响因子：
--
作者：
D. Schrage;L. Young;P. Roybal
通讯作者：
D. Schrage;L. Young;P. Roybal
DOI：
10.1016/j.nima.2017.06.045
发表时间：
2017-10
影响因子：
1.4
作者：
Chenxing Li;Yuan He;Xianbo Xu;Zhouli Zhang;Feng-Feng Wang-Feng;W. Dou;Zhi-jun Wang;Tieshan Wang
通讯作者：
Chenxing Li;Yuan He;Xianbo Xu;Zhouli Zhang;Feng-Feng Wang-Feng;W. Dou;Zhi-jun Wang;Tieshan Wang