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TY - CONF AU - Wang, P. AU - Cao, D.Z. AU - Chen, H.B. AU - Cheng, C. AU - Shi, J. AU - Wang, Z.H. AU - Zha, H. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - High Power Test of the S-Band Spherical Pulse Compressor at Tsinghua University J2 - Proc. of IPAC2018, Vancouver, BC, Canada, April 29-May 4, 2018 C1 - Vancouver, BC, Canada T2 - International Particle Accelerator Conference T3 - 9 LA - english AB - We designed, fabricated and high power tested an S-band spherical pulse compressor for the high-power test facility at Tsinghua University. The pulse compressor comprises a spherical resonant cavity with an unloaded quality factor of 100, 000 and an RF polarizer with two rectangular ports and a circular port. To achieve high efficiency and large power gain, the coupling coefficient was optimized to 8 with input pulse length of 3.6 us and compression ratio of 12. After conditioning the RF system, the pulse compressor generated RF pulses with peak power of more than 400MW. And during the operation, the pulse compressor has very low breakdown rate and was extremely stable. PB - JACoW Publishing CP - Geneva, Switzerland SP - 4008 EP - 4010 KW - cavity KW - FEL KW - coupling KW - polarization KW - klystron DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-THPAL153 UR - http://jacow.org/ipac2018/papers/thpal153.pdf ER -