Clock distribution and local oscillator of a digital low-level radio-frequency board for SSRF

Clock distribution and local oscillator of a digital low-level radio-frequency board for SSRF 1 2 3 first-author 1 3 1 3 corresp Corresponding author. E-mail address: zhaozhentang@sinap.ac.cn Corresponding author. E-mail address: zhaozhentang@sinap.ac.cn zhaozhentang@sinap.ac.cn Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China Graduate University of Chinese Academy of Sciences, Beijing 100049, China Graduate University of Chinese Academy of Sciences, Beijing 100049, China Shanghai Key Laboratory of Cryogenics &Superconducting FR Technology, Shanghai 201800, China Shanghai Key Laboratory of Cryogenics &Superconducting FR Technology, Shanghai 201800, China In the storage ring RF system of Shanghai Synchrotron Radiation Facility, the clock distribution and the local oscillator are two parts of the digital low level radio frequency hardware board. In this paper, we designed and produced the clock distribution and the local oscillator board using the AD9858 and AD9510 chips. The results show that the phase noise of the local oscillator signal is lower than 100dBc/Hz with 50 kHz offset. Digital low-level radiofrequency Clock distribution system Local oscillator Digital low-level radiofrequency board References Zhang T X , Zhao Y B , Yin C K , et al . HPLP.B , 2008 , 20 ( 6 ): 1048 - 1052 . (in Chinese) HPLP.B Wang F , Wang G W . Nucl Tech , 2004 , 27 ( 1 ): 18 - 21 . Nucl Tech Zhao Y B , Yin C K , Zhang T X , et al . Chin Phys C 2008 , 32 ( 9 ): 758 - 760 . Chin Phys C Doolittle L , LO C C , Monroy M , et al . The SNS front end LLRF system . Proceeding of LINAC2002 . 373 - 375 . The SNS front end LLRF system Ma H J , Champion M , Crofford M , et al . SNS low-level RF control system: Design and performance . Particle accelerator conference 2005 . 16-20 May 2005 , 3479 - 3481 . SNS low-level RF control system: Design and performance Champion M , Crofford M , Ma H , et al . The Spallation neutron source accelerator low level RF control system . Particle accelerator conference 2003 . 12-16 May 2003 , 3377 - 3379 . The Spallation neutron source accelerator low level RF control system Karol P , Krzysztof T P , Wojciech J , et al . FPGA-based multichannel optical concentrator SIMCON 4.0 for TESLA cavities LLRF control system . Photonics applications in astronomy, communications, industry, and high-energy physics experiments 2006, proceedings of SPIE , 6347 . FPGA-based multichannel optical concentrator SIMCON 4.0 for TESLA cavities LLRF control system Maxim Application Note 3359 . http://www.maxim-ic.com/an3359 Maxim Application Note 3359 Dai W J . The method of phase noise measurement using a spectrum analyzer . Foreign Electron Measure , 2001 , 5 : 11 - 12 . (in Chinese) The method of phase noise measurement using a spectrum analyzer 10.13538/j.1001-8042/nst.21.7-10 Supported by Shanghai Synchrotron Radiation Facility. 2009-08-28 2010-02-20 2021-01-19 2010 Nuclear Science and Techniques 01 21