FPGA-based amplitude and phase detection in DLLRF

LIU Rong; WANG Zheng; PAN Wei-Min; WANG Guang-Wei; LIN Hai-Ying; SHA Peng; ZENG Ri-Hua

doi:10.1088/1674-1137/33/7/017

Chinese Physics C> 2009, Vol. 33> Issue(7) : 594-598 DOI: 10.1088/1674-1137/33/7/017

FPGA-based amplitude and phase detection in DLLRF

Abstract
HTML
Reference
Related

PDF

Abstract：
The new generation particle accelerator requires a highly stable radio frequency (RF) system. The stability of the RF system is realized by the Low Level RF (LLRF) subsystem which controls the amplitude and phase of the RF signal. The detection of the RF signal's amplitude and phase is fundamental to LLRF controls. High-speed ADC (Analog to Digital Converter), DAC (Digital to Analog Converter) and FPGA (Field Programmable Gate Array) play very important roles in digital LLRF control systems. This paper describes the implementation of real-time amplitude and phase detection based of the FPGA with an analysis of the main factors that affect the detection accuracy such as jitter, algorithm's defects and non-linearity of devices, which is helpful for future work on high precision detection and control.

[1]	Ri-Guang Huang , You-Cai Chen , Dong-Liang Fang . 0νββ decay nuclear matrix elements under Left-Right symmetric model from the spherical quasi-particle random phase approximation method with realistic force. Chinese Physics C, 2026, 50(2): 1-11.
[2]	Yifang Wang , Zhi-zhong Xing , Shun Zhou . Towards a detection of reactor ${\overline {\boldsymbol v}_{\boldsymbol e} \boldsymbol\to \overline {\boldsymbol v}_{\boldsymbol\mu} }$ and ${\overline {\boldsymbol v}_{\boldsymbol e} \boldsymbol\to \overline {\boldsymbol v}_{\boldsymbol\tau} }$ oscillations with possible CP violation. Chinese Physics C, 2026, 50(1): 011001. doi: 10.1088/1674-1137/ae0996
[3]	Yu Yao , Xuejie Liu , Xiaoyun Chen , Yuheng Wu , Jialun Ping , Yue Tan , Qi Huang . Investigation of Resonances in the Σ(1/2^-) System Based on the Chiral Quark Model. Chinese Physics C, 2026, 50(3): 1-11.
[4]	Bo Lan , Qin-Ze Song , Jin-Huan Sheng , Yi Qiao , Ru-Min Wang . Study of χ_cJ (J = 0,1,2) decays to light meson pairs based on SU(3) flavor symmetry/breaking analysis. Chinese Physics C, 2025, 49(12): 123106. doi: 10.1088/1674-1137/adff00
[5]	Siyu Tang , Zuman Zhang , Chao Zhang , Liang Zheng , Renzhuo Wan . Investigating the transverse-momentum- and pseudorapidity-dependent flow vector decorrelation in p–Pb collisions with a multi-phase transport model. Chinese Physics C, 2025, 49(12): 124104. doi: 10.1088/1674-1137/adef1b
[6]	Siyuan Zhang , Qi Niu , Yichao Li , Xin Zhang . Configuration requirements for 21-cm forest background quasar searches with Moon-based interferometer. Chinese Physics C, 2025, 49(11): 115105. doi: 10.1088/1674-1137/ade957
[7]	Qi Zeng , Bushi Huang , Tingwei Peng , Hongfu Li , Xing Xu , Yuanming Xing , Huaiqiang Zhang , Jiankun Zhao , Xu Zhou . A novel method of half-life determination for highly charged ions based on isochronous mass spectrometry. Chinese Physics C, 2025, 49(11): 114002. doi: 10.1088/1674-1137/ade959
[8]	Rui-Bo Wang , Lei You , Shi-Jie Ma , Jian-Bo Deng , Xian-Ru Hu . Thermodynamic phase transition and Joule-Thomson expansion of a quantum corrected black hole in AdS spacetime. Chinese Physics C, 2025, 49(11): 115102. doi: 10.1088/1674-1137/ade4a9
[9]	Fan Huang , Zu-Cheng Chen , Qing-Guo Huang . Detecting cosmological phase transitions with Taiji: sensitivity analysis and parameter estimation. Chinese Physics C, 2025, 49(10): 105103. doi: 10.1088/1674-1137/ade65f
[10]	Mikael Chala , Luis Gil , Zhe Ren . Phase transitions in dimensional reduction up to three loops. Chinese Physics C, 2025, 49(12): 123105. doi: 10.1088/1674-1137/adf322
[11]	LIANG Jun , LIU Yan-Chun , ZHU Qiao . Thermodynamics of noncommutative geometry inspired black holes based on Maxwell-Boltzmann smeared mass distribution. Chinese Physics C, 2014, 38(2): 025101. doi: 10.1088/1674-1137/38/2/025101

Access

Get Citation

LIU Rong, WANG Zheng, PAN Wei-Min, WANG Guang-Wei, LIN Hai-Ying, SHA Peng and ZENG Ri-Hua. FPGA-based amplitude and phase detection in DLLRF[J]. Chinese Physics C, 2009, 33(7): 594-598. doi: 10.1088/1674-1137/33/7/017

RIS(for EndNote,Reference Manager,ProCite)

BibTex

Txt

Milestone

Received: 2008-10-28
Revised: 2009-01-06

Article Metric

Article Views(5591)
PDF Downloads(798)
Cited by(0)

Policy on re-use

To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

FPGA-based amplitude and phase detection in DLLRF

Corresponding author: LIU Rong,

Received Date: 2008-10-28
Accepted Date: 2009-01-06
Available Online: 2009-07-05

Abstract:

The new generation particle accelerator requires a highly stable radio frequency (RF) system. The stability of the RF system is realized by the Low Level RF (LLRF) subsystem which controls the amplitude and phase of the RF signal. The detection of the RF signal's amplitude and phase is fundamental to LLRF controls. High-speed ADC (Analog to Digital Converter), DAC (Digital to Analog Converter) and FPGA (Field Programmable Gate Array) play very important roles in digital LLRF control systems. This paper describes the implementation of real-time amplitude and phase detection based of the FPGA with an analysis of the main factors that affect the detection accuracy such as jitter, algorithm's defects and non-linearity of devices, which is helpful for future work on high precision detection and control.