The Joint Accelerator Conferences Website (JACoW) is an international collaboration that publishes the proceedings of accelerator conferences held around the world.
TY - CONF AU - Yao, Z.Y. AU - Keir, J.J. AU - Kolb, P. AU - Kong, A. AU - Laxdal, R.E. AU - Matheson, B. AU - Thoeng, E. AU - Waraich, B.S. AU - Zheng, Q. AU - Zvyagintsev, V. ED - Schaa, Volker RW ED - Pei, Guoxi ED - Chin, Yong Ho ED - Fu, Shinian ED - Zhao, Ning TI - Tests of Multi-frequency Coaxial Resonators J2 - Proc. of LINAC2018, Beijing, China, 16-21 September 2018 CY - Beijing, China T2 - Linear Accelerator Conference T3 - 29 LA - english AB - A significant issue in low beta resonators is medium field Q-slope (MFQS) at 4K. To study the MFQS and the field dependence of surface resistance in low beta resonators, a quarter-wave resonator (QWR) and a half-wave resonator (HWR) were designed to be tested at integer harmonic frequencies of 200MHz, and up to 1.2GHz. A series of chemistry and heat treatments are proposed to these cavities. A systemic study on the surface resistance of the coaxial resonators associating with post-processing, RF field, and frequency is in progress. The cavities were designed and fabricated. The cold test results will be discussed in this paper. PB - JACoW Publishing CP - Geneva, Switzerland SP - 420 EP - 422 KW - cavity KW - TRIUMF KW - niobium KW - rf-amplifier KW - controls DA - 2019/01 PY - 2019 SN - 2226-0366 SN - 978-3-95450-194-6 DO - DOI: 10.18429/JACoW-LINAC2018-TUPO040 UR - http://jacow.org/linac2018/papers/tupo040.pdf ER -