C-ADS强流质子直线加速器调谐系统测试分析

张磊; 王锋锋; 刘鲁北; 王若旭; 于培炎; 高郑; 张斌

doi:10.11884/HPLPB201830.180155

C-ADS强流质子直线加速器调谐系统测试分析

doi: 10.11884/HPLPB201830.180155

张磊^{1, 2,},
王锋锋¹,
刘鲁北^{1, 2},
王若旭¹,
于培炎^{1, 2},
高郑¹,
张斌^1, ,

1.
中国科学院近代物理研究所, 兰州 730000
2.
中国科学院大学, 北京 100049

基金项目:

国家自然科学基金项目 91426303

详细信息

作者简介:
张磊(1994—), 男, 硕士研究生, 研究方向为精密机械工程, zhanglei@impcas.ac.cn

通讯作者:
张斌(1977—), 男, 正高级工程师, 研究方向为精密机械工程, zhangb@impcas.ac.cn

中图分类号: TL5
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- 文章访问数: 1169
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- 被引次数: 0
出版历程
- 收稿日期: 2018-06-02
- 修回日期: 2018-08-29
- 刊出日期: 2018-12-15

Test and analysis of tuner system for C-ADS high current proton linac

Zhang Lei^{1, 2
,},
Wang Fengfeng¹,
Liu Lubei^{1, 2},
Wang Ruoxu¹,
Yu Peiyan^{1, 2},
Gao Zheng¹,
Zhang Bin^{1
, ,}

1.
Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
2.
University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 调谐系统是C-ADS超导直线加速器不可或缺的一部分, 在加速器运行过程决定了超导腔的运行频率, 直接影响了粒子加速的效果。为了充分了解调谐系统的工作情况和分析调谐系统出现的问题, 设计了实验对调谐系统进行全方位测试。首先对调谐器的杠杆机构和剪叉机构进行了力学分析, 而后对半波长谐振(HWR) 超导腔在不同状态下进行了电场模拟, 得出设计的调谐力和调谐位移满足HWR腔频率调谐要求。最后通过详细实验, 采用自动、手动等方式测试了恒温器CM1, CM2, CM3中超导腔调谐器工作时的线性度、回程差、直线单元部分的线性度及回程。结果显示: CM1的调谐器基本满足慢调谐需要, CM2存在1200步回程, 主要原因在于直线单元部分; CM3中调谐器的回程差较大, 线性度不高, 需要进一步改进。
- C-ADS /
- 调谐 /
- 频变 /
- 稳定 /
- 回程
Abstract: Tuner system is the indispensable part of ADS high current proton superconducting linac.It influences the working frequency of superconducting cavity of particle accelerator.To completely understand the working situation of the tuner system and analyse the problems, experiments were fully conducted.The lever structure and scissor structure of tuner were analyzed first, then the electric field simulations of the HWR superconducting cavity under different conditions were performed, and it was concluded that the force of tuning and tuning displacement meet the frequency tuning requirements of HWR cavity.Finally, the linearity and return difference of the tuner and linear unit in thermostats CM1, CM2, and CM3 were tested automatically and manually.The tuner of CM1 basically meets the need of slow tuning.In the test result of CM2 return of 1200 steps occurred, mainly due to the linear unit.The tuner of CM3 has a large return difference and a little worse linearity that need further improvement.
- C-ADS /
- tuning /
- frequency dependence /
- stabilize /
- return difference

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图 1 25 MeV ADS加速器直线段

Figure 1. Layout of ADS 25 MeV Linac

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图 2 两种不同调谐器结构

Figure 2. Two tuners with different structure

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图 3 HWR腔体初始电场分布

Figure 3. Original electric field in HWR cavity

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图 4 受力后HWR腔体电场分布

Figure 4. Electric field of HWR cavity under force

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图 5 受指定位移后HWR腔体电场分布

Figure 5. Electric field of HWR cavity after displacement

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图 6 CM2-3手动测试结果

Figure 6. Curves of manual test of tuner in CM2-3

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图 7 CM1-2腔体频率曲线图

Figure 7. Curve of CM1-2 cavity frequency

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图 8 CM1-2腔体频率对应电机步进曲线图

Figure 8. Curve of tuner test in CM1-2

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图 9 CM2-3腔体频率对应电机步进曲线图

Figure 9. Curve of tuner test in CM2-3

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图 10 CM3-1腔体频率对应电机步进曲线图

Figure 10. Curve of tuner test in CM3-1

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图 11 直线驱动单元剖面图

Figure 11. Crossection of tuner linear driving unit

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图 12 调谐器直线单元测量

Figure 12. Test of linear part in tuner

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图 13 CM1-2移动盘位置对应电机步进数关系

Figure 13. Curves of the linear part test in CM1-2

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图 14 CM2-3移动盘位置对应电机步进数关系

Figure 14. The curve of linear part test in CM1-2

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图 15 CM3-1移动盘位置对应电机步进数关系

Figure 15. Curve of linear part test in CM3-1

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表 1 调谐器设计参数

Table 1. Parameters of tuner design

tuner	frequency/MHz	tuning sensitivity k/(kHz·mm^-1)	tuning force F/(kN·mm^-1)	tuning resolution/(step·nm^-1)	tuning range f₁/kHz
HWR010	162.5	180	2.2	44	180
HWR015	162.5	110	1.2	64	110

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参考文献(10)

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