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The High Voltage Converter Modulator (HVCM) systems at the Spallation Neutron Source (SNS) are the primary power sources for the klystrons that supply RF power to the H-beam. The availability of the HVCMs exceeds 99% due to numerous improvements that have been implemented since SNS operations began in 2006. However, the HVCMs continue to operate in open-loop mode that results in significant voltage...
The High Voltage Convertor Modulators are used to power the RF klystrons used throughout the linear accelerator at the Spallation Neutron Source. The output voltage of the modulator has significant voltage droop and ripple which, combined with low level RF system limitations, affect performance and stability of the accelerator cavities. In conjunction with the progress in the development of the new...
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