A digital low-level radio-frequency system R&amp;D for a 1.3 GHz nine-cell cavity

QIU Feng; GAO Jie; LIN Hai-Ying; LIU Rong; MA Xin-Peng; SHA Peng; SUN Yi; WANG Guang-Wei; WANG Qun-Yao; XU Bo

doi:10.1088/1674-1137/36/3/013

Chinese Physics C> 2012, Vol. 36> Issue(3) : 261-266 DOI: 10.1088/1674-1137/36/3/013

A digital low-level radio-frequency system R&D for a 1.3 GHz nine-cell cavity

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To test and verify the performance of the digital low-level radio-frequency (LLRF) and tuner system designed by the IHEP RF group, an experimental platform with a retired KEK 1.3 GHz nine-cell cavity is set up. A radio-frequency (RF) field is established successfully in the cavity and the frequency of the cavity is locked by the tuner in ±0.5° (about ±1.2 kHz) at room temperature. The digital LLRF system performs well in a five-hour experiment, and the results show that the system achieves field stability at amplitude <0.1% (peak to peak) and phase <0.1° (peak to peak). This index satisfies the requirements of the International Linear Collider (ILC), and this paper describes this closed-loop experiment of the LLRF system.

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QIU Feng, GAO Jie, LIN Hai-Ying, LIU Rong, MA Xin-Peng, SHA Peng, SUN Yi, WANG Guang-Wei, WANG Qun-Yao and XU Bo. A digital low-level radio-frequency system R&D for a 1.3 GHz nine-cell cavity[J]. Chinese Physics C, 2012, 36(3): 261-266. doi: 10.1088/1674-1137/36/3/013

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Received: 2011-06-02
Revised: 1900-01-01

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

A digital low-level radio-frequency system R&D for a 1.3 GHz nine-cell cavity

Corresponding author: QIU Feng,

Received Date: 2011-06-02

Accepted Date: 1900-01-01

Available Online: 2012-03-01

Abstract: To test and verify the performance of the digital low-level radio-frequency (LLRF) and tuner system designed by the IHEP RF group, an experimental platform with a retired KEK 1.3 GHz nine-cell cavity is set up. A radio-frequency (RF) field is established successfully in the cavity and the frequency of the cavity is locked by the tuner in ±0.5° (about ±1.2 kHz) at room temperature. The digital LLRF system performs well in a five-hour experiment, and the results show that the system achieves field stability at amplitude <0.1% (peak to peak) and phase <0.1° (peak to peak). This index satisfies the requirements of the International Linear Collider (ILC), and this paper describes this closed-loop experiment of the LLRF system.

A digital low-level radio-frequency system R&D for a 1.3 GHz nine-cell cavity

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通讯作者: 陈斌, bchen63@163.com

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A digital low-level radio-frequency system R&D for a 1.3 GHz nine-cell cavity

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