Development Of High Accuracy Controller For Kicker Control System

Kicker Control System is the key part of beam transportation from CSRm toCSRe. After the accumulated beam reach to high energy in CSRm, the Kicker ControlSystem need to generate the deflection magnetic field through6magnet power supplyin CSRm to extract the beam; meanwhile, the4magnet power supply in CSRe shouldalso generate deflection magnetic field to inject the beam into CSRe at the right time.As a result, the accuracy of Kicker Control System has a great influence on thetransportation of beam from CSRm to CSRe.The existed Kicker Control System of HIRFL is based on multi-boardarchitecture and many software interface will be needed for internal communication.Because of this, the system is complicated and hard to maintain. Also, the timeaccuracy of the system can only reach to5ns because of the FPGA(200MHz)currently being used.Based on the purpose of the upgrading of Kicker Control System, my researchdeveloped a new Kicker controller to raise the efficiency of beam transportation. Theone-board architecture (FPGA+DSP+ARM11) has been applied to meet the demandof Kicker Control System. FPGA has been upgraded to Cyclone III(400MHz) whichcan raised the time accuracy to2.5ns; ARM7also is replaced by ARM11to provide abetter network function; meanwhile, the TMS320C6713B DSP(200MHz) from TICorporation provide the support for float point arithmetic which is useful for thealgorithm program. The development of the software is based on B/S architecture, andthe Boa web server has been transplanted into the embedded Linux of ARM11toprovide the function of browser access. HTML/CSS/JavaScript has been applied to develop the client usr interface for operator to configurate the hardware platform.The innovation of this research is the highly integrate on-board Kicker controller,which not only reduced the complexity of the internal connection between eachsubsystem, but also raised the time accuracy and the resolution of the phase detectionof the beam in CSRm. Also, the browser control interface is also the highlights of thisresearch, because the operators have no need to install many software interfaces andto use the specific computers or VNC to configurate the hardware of Kicker. Underthe same LAN, we can simple use the browser through IP address to access Kickercontroller.This article will be expanded from the following aspects: The first chapterintroduces the significance and foundation of the research; the second chapter mainlypresents the demands and corresponding solution of Kicker Control System; the thirdchapter describes the design of the Kicker controller hardware; the fourth chaptershows how ARM11serves as the bridge between browser and FPGA; the fifth chapterintroduces the Verilog logic design for FPGA; the sixth chapter shows theexperimental results; the last chapter gives the conclusion of the research and set thenext goal for future research.