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C-band (5712-MHz) linac is used as the main accelerator of the Japanese X-ray free electron laser (XFEL) facility in SPring-8. Since the C-band linac has high acceleration gradient, our 8-GeV accelerator is compact. One C-band unit consists of following components; two choke-mode-type 1.8-m accelerating structures, an rf pulse compressor, a 50-MW klystron, and a 110-MW compact modulator power supply...
We have been developed a compact, insulation oil filled modulator for the X-ray free electron laser (X-FEL) project at SPring-8. The modulator supplies 114 MW of peak power at a 60 pps maximum repetition rate. The first prototype was constructed in March 2003, and a second was constructed with minor-improvements in January 2005. We obtained the expected design performance: PFN charging voltage up...
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