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The High Voltage Converter Modulators (HVCMs) at the Spallation Neutron Source (SNS) have operated in excess of a combined 250,000 hours. Performance and reliability improvements to the HVCM are ongoing to increase modulator availability as accelerator system demands increase. There is a relatively large amount of energy storage in the HVCMs, ~180 kJ. This energy can be released into unsuppressed...
The first-generation high-frequency switching megawatt-class high voltage converter modulators (HVCM) developed by Los Alamos national laboratory for the spallation neutron source (SNS) at Oak Ridge national laboratory have been installed and are now operational. Each unit is capable of delivering pulses up to 11 MW peak, 1 MW average power at voltages up to 140 kV to drive klystron(s) rated up to...
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