Frequency tuning with RFQ temperature in China ADS Injector Ⅱ

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Jing Wang, Jian-Long Huang, Xiao-Qi Zhang, Bin Zhang, Yuan He, Zhou-Li Zhang and Ai-Min Shi. Frequency tuning with RFQ temperature in China ADS Injector Ⅱ[J]. Chinese Physics C, 2016, 40(3): 037003. doi: 10.1088/1674-1137/40/3/037003
Jing Wang, Jian-Long Huang, Xiao-Qi Zhang, Bin Zhang, Yuan He, Zhou-Li Zhang and Ai-Min Shi. Frequency tuning with RFQ temperature in China ADS Injector Ⅱ[J]. Chinese Physics C, 2016, 40(3): 037003.  doi: 10.1088/1674-1137/40/3/037003 shu
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Received: 2015-06-09
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    Supported by National Natural Science Foundation of China (91026001)

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Frequency tuning with RFQ temperature in China ADS Injector Ⅱ

    Corresponding author: Jing Wang,
  • 1. Lanzhou University of Technology, Lanzhou 730000, China
  • 2. Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • 3.  Lanzhou University of Technology, Lanzhou 730000, China
  • 4.  Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
Fund Project:  Supported by National Natural Science Foundation of China (91026001)

Abstract: A 162.5 MHz four-vane radio frequency quadruple (RFQ) accelerator has been developed at the Institute of Modern Physics (IMP) for Injector II of the China ADS linac. The RFQ will operate in continuous wave mode at 100 kW. For the designed 10 mA beam, the additional RF power dissipation will induce a very large reflection of power. A water-temperature controlling system will be used to reduce the power reflection by tuning the frequency of the RFQ. The tuning capability of the water temperature is studied under different configurations of cooling water. Simulations and experiment are compared in this paper. The experimental results agree well with simulation using ANSYS. This can be used as a reference to tune the RFQ in beam commissioning.

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