Mass production of C-band RF pulse compressor

C-band RF pulse compressor is a device that generates high peak RF-power by saving, and compressing the RF-power output from the klystron. XFEL project is scheduled to be installed 64 pulse compressor units, 2009 of August 49 units completed the fabrication and RF measurement. The pulse compressor is required for the high frequency stability, we improved the tuner structure for the frequency adjustment. As a result, the frequency became very stable, and high power test resulted of the test hall at RIKEN, the gain is obtained as designed. We will complete the production of the pulse compressor by the end of 2009. (author)