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Persistent URL http://purl.org/net/epubs/work/37914
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Record Id 37914
Title Digital master oscillator results for the ISIS Synchrotron
Abstract Rutherford Appleton Laboratory in Oxfordshire is home to an 800MeV synchrotron particle accelerator called ISIS. Its main function is to direct a beam of protons into a heavy metal target to produce neutrons for scientists to analyse condensed matter. A second harmonic system is being developed to upgrade the beam current from 200uA to 300uA in order to drive a second target station. This is being achieved by the inclusion of four second harmonic cavities to increase the width of the RF bucket. In the past the six fundamental cavities were driven by an analogue master oscillator but the extra cavities will bring more difficultly in the phasing of the system. This could be more easily and precisely controlled by embedding a Direct Digital Synthesis core into an FPGA chip as the heart of a new digital Master Oscillator. This paper describes the results of the setting up and performance of the prototype instrument and the implications it has for the synchrotron.
Organisation CCLRC , ISIS , ISIS-ACCEL
Keywords Physics , Engineering , Accelerator RF , Digital Control , ISIS 2007
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Language English (EN)
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Paper In Conference Proceedings In 22nd Particle Accelerator Conference (PAC07), Albuquerque, New Mexico, 25-29 Jun 2007, (2007). 2007