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TY - CONF AU - He, X. AU - Lei, J. AU - Zhang, J.R. ED - Koscielniak, Shane ED - Satogata, Todd ED - Schaa, Volker RW ED - Thomson, Jana TI - Development of a High-Power High-Directivity Directional Coupler and Four Power Dividers for S-Band 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 - A novel Bethe-hole S band directional coupler has been designed based on some structural optimizations, the prototype has been tested with a Directivity of more than 30 dB. The new directional coupler can also hold higher power compared to the old type, which is more useful for the future accelerator applications. Four power dividers using different structures are studied and the best one is chosen for fabrication. The prototype with matching rod in the middle has got qualified microwave cold test results and has been used during the whole microwave commissioning of an accelerating structure, the performance is quite stable. PB - JACoW Publishing CP - Geneva, Switzerland SP - 2422 EP - 2424 KW - coupling KW - GUI KW - vacuum KW - MMI KW - simulation DA - 2018/06 PY - 2018 SN - 978-3-95450-184-7 DO - 10.18429/JACoW-IPAC2018-WEPMF031 UR - http://jacow.org/ipac2018/papers/wepmf031.pdf ER -