General
CONG YAN  Male  Han Master supervisor  Institute of Modern Physics ,CAS
Email: congyan@impcas.ac.cn
Telephone: 0931-4969526
Address: 509 NanChang Rd., LanZhou, China 
Postcode: 730000

Research Areas

RF system design

Education

1. Institute of Modern Physics, Chinese Academy of Sciences, Sept. 2007-July 2012;
Degree: Doctor of Engineering;
Major: Nuclear Technology and Applications;
2. Faculty of Information Engineering, China University of Geosciences, Sept. 2003-July 2007;
Degree: Bachelor of Engineering;
Major: Communication Engineering.

Experience

Institute of Modern Physics, Chinese Academy of Sciences, July 2012—Now
Position: Senior Engineer
Work Experience
Institute of Modern Physics, Chinese Academy of Sciences, July 2012—Now
Position: Senior Engineer
Teaching Experience
1) HIRFL LLRF System Upgrade, May. 2009—June.2013
HIRFL LLRF system upgrade is my doctor graduation thesis. The system’s main function is to realize the phase and amplitude stability. The system is a new kind of digital control system. Automatic control theory, digital signal processing method and software radio theory are used to realize the system. There are three PID feedback loop in each system. We use xilinx virtex5 FPGA and TMS2812 DSP as the core of hardware, and use high speed A/D and D/A as peripheral. During the project, I have designed the software in FPGA and DSP. The phase control precision is better than 0.005°,and the amplitude fluctuation is lower than ±2×10-4.
2) RFQ Digital LLRF System Design, August. 2008—September.2010
This project is responsible for the phase and amplitude stability of 100kW 100MHz power source. The system is consisted by frequency synthesis module, radio output module, analog front plate, digital front plate and digital processing board.
3) Computer Control System of Experiment Cooling Storage Ring, September. 2008—January.2010
I designed the hardware and software of the system. TMS5509, ALTERA EP2C35 and DDS AD9854 are used in the system. The control system has been put into use. The phase control accuracy is ±2°,and the amplitude control accuracy is ±3%.
4) HIMM Synchrotron PXI Computer Control System of Experiment, January. 2010—September.2013
There are three 3U boards in the PXI chassis--DDS board, DAC optical board and ADC board. I have designed the hardware and software of the three board.
5) SSC_LINAC Digital LLRF Control System Design, January. 2012—now
SSC_LINAC RF working frequency is 53.667MHz. I have design the whole structure of the LLRF system. The system constitute by two chassis—phase and amplitude stabilization chassis, cavity tuning chassis. I have designed the hardware and software for the system. The phase and amplitude stabilization has been test in the laboratory. The system can meet our requirements. Now tuning control system is working online.

Honors & Distinctions

1. First-class School scholarship, China University of Geosciences, (2004-2007)
2. Tarim Oilfield excellence scholarship, China University of Geosciences, (2006)
3. Excellent school intern, China University of Geosciences, (2004-2007)
4. Excellent Graduate of China University of Geosciences, China University of Geosciences, (2007)
5. Excellent Student of Graduate University of Chinese Academy of Sciences, Graduate University of Chinese Academy of Sciences, (2008-2012)
6. Outstanding student leaders of Graduate University of Chinese Academy of Sciences, Graduate University of Chinese Academy of Sciences, (2008-2012)

Publications

   
Papers
1. Cong Yan, Wei Baowen, Xu Zhe, Wang Xianwu, Ren Hongwen, Wen Lianghua, Yi Xiaoping. “High reliability low level RF control system for HIRFL-CSRe”: High Power Laser and Particle Beams, 2010,22(11), 2699-2702 (EI)
2. Cong Yan, Xu Zhe, Li Gang, Wang Xianwu, Sun Liepeng, Yi Xiaoping. “Research of Digital Low Level Radio Frequency Control System for HIRFL”: Nuclear Physics Review, 2012, 29(3), 248-252
3. Sun Liepeng, Zhang Zhouli, Zhao Hongwei, Xu Zhe, Shi Aimin, Cong Yan. “Radio frequency characteristic measurements and power conditioning of DPIS-RFQ at IMP”: High Power Laser and Particle Beams, 2013, 25(4), 989-993(EI)
4. Li Qiang, Gao Huanying, Li Jing, Xu Zhe, Wang Chunxiao, Cong Yan. “Compensating method for feedback coaxial line drift of cavity of HIRFL”: High Power Laser and Particle Beams, 2013, 25(9), 2389-2392(EI)

Research Interests

Digital Low Level RF System

Conferences

1. IPAC 2012 
2. CPAC 2014 

Students

现指导学生

周睿怀  硕士研究生  082703-核技术及应用  

王新宇  硕士研究生  082703-核技术及应用