Mass production report of C-band RF pulse compressor

A C-band rf pulse compressor stores the rf power from a klystron and generates a compressed rf pulse that has higher peak power in order to obtain a higher acceleration gradient. The XFEL project at SPring-8 uses 64 pulse compressor units. In December 2009, we completed the fabrication and RF measurement of these units. A high-power rf test was conducted in the test stand at RIKEN. The peak output power from pulse compressor is 260 MW, and the acceleration gradient of the accelerating structure is achieved to be 40 MV/m. (author)