Tuner control system of Spoke012 SRF cavity for C-ADS injector I

Na Liu; Yi Sun; Guang-Wei Wang; Zheng-Hui Mi; Hai-Ying Lin; Qun-Yao Wang; Rong Liu; Xin-Peng Ma

doi:10.1088/1674-1137/40/9/097001

Chinese Physics C> 2016, Vol. 40> Issue(9) : 097001 DOI: 10.1088/1674-1137/40/9/097001

Tuner control system of Spoke012 SRF cavity for C-ADS injector I

Na Liu ^1,2,, ,
Yi Sun ² ,
Guang-Wei Wang ² ,
Zheng-Hui Mi ² ,
Hai-Ying Lin ² ,
Qun-Yao Wang ² ,
Rong Liu ² ,
Xin-Peng Ma ²

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Abstract：
A new tuner control system for spoke superconducting radio frequency (SRF) cavities has been developed and applied to cryomodule I of the C-ADS injector I at the Institute of High Energy Physics, Chinese Academy of Sciences. We have successfully implemented the tuner controller based on Programmable Logic Controller (PLC) for the first time and achieved a cavity tuning phase error of ± 0.7° (about ± 4 Hz peak to peak) in the presence of electromechanical coupled resonance. This paper presents preliminary experimental results based on the PLC tuner controller under proton beam commissioning.
- tuner control ,
- spoke cavity ,
- PLC

References

[1]	Jingyu Tang, Zhihui Li, Conceptual Physics Design on the C-ADS Accelerators, IHEP-CADS-Report, 2012
[2]	A. Zachary. Conway, Electro-mechanical interacttions in superconducting spoke-loaded cavities, Ph.D thesis, 2007,p 54-58
[3]	W. Schappert, J. Holzbauer et al. Resonance control for narrow-bandwidth superconducting RF application, Proceedings of SRF2015
[4]	Zheng-Hui Mi et al, A tuning system for BEPCⅡ, CPC, 2013, 0870031-0870035
[5]	Z. Fang et al. Auto-tuning systems for J-PARC LINAC RF cavities, Nuclear Instruments and Methods in Physics Research A, 767:135-145(2014)
[6]	J. R. Delayen, Ponderomotive instabilities and microphonic-a tutorial, Physica C, 441:1-6(2006)
[7]	D. Schulze, Ponderomotive Stability of RF Resonators and Resonator Control Systems, Ph.D. thesis, 1971, p38-40
[8]	J. R. Delayen, Phase and Amplitude Stabilization of Superconducting Resonators, Ph.D. thesis, 1978, p59-60

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Na Liu, Yi Sun, Guang-Wei Wang, Zheng-Hui Mi, Hai-Ying Lin, Qun-Yao Wang, Rong Liu and Xin-Peng Ma. Tuner control system of Spoke012 SRF cavity for C-ADS injector I[J]. Chinese Physics C, 2016, 40(9): 097001. doi: 10.1088/1674-1137/40/9/097001

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Received: 2016-02-10

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Supported by Proton linac accelerator I of China Accelerator Driven sub-critical System (Y12C32W129)

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Tuner control system of Spoke012 SRF cavity for C-ADS injector I

Corresponding author: Na Liu,

Received Date: 2016-02-10
Available Online: 2016-09-05

Fund Project: Supported by Proton linac accelerator I of China Accelerator Driven sub-critical System (Y12C32W129)

Abstract: A new tuner control system for spoke superconducting radio frequency (SRF) cavities has been developed and applied to cryomodule I of the C-ADS injector I at the Institute of High Energy Physics, Chinese Academy of Sciences. We have successfully implemented the tuner controller based on Programmable Logic Controller (PLC) for the first time and achieved a cavity tuning phase error of ± 0.7° (about ± 4 Hz peak to peak) in the presence of electromechanical coupled resonance. This paper presents preliminary experimental results based on the PLC tuner controller under proton beam commissioning.