Proceedings of the 18th International Conference on RF Superconductivity
18th International Conference on RF Superconductivity, 17-21 July, 2017, Lanzhou, China
The RF-Dipole Crabbing Cavity designed for the LHC High Luminosity Upgrade includes two higher order mode (HOM) couplers. One of the HOM couplers is an rf filter, which is a high pass filter designed to couple to the horizontal dipole modes and accelerating modes up to 2 GHz, while rejecting the fundamental operating mode at 400 MHz. The coupler consists of a high pass filter circuit where the rejection of the operating mode and transmission of HOMs are sensitive to dimensional deviations. An rf test box has been designed to measure the transmission of the rf filter in order to qualify the fabricated HOM coupler and to tune the coupler. This paper presents the measurements of the HOM coupler with the rf test box.
Original Publication Citation
DeSilva, S. U., Delayen, J. R., Li, Z., & Park, H. (2018). Lessons learned from RF-dipole prototype cavities for LHC luminosity upgrade. In V.R.W. Schaa, Y. He, L. Li, & N. Zhao (Eds.), Proceedings of the 18th International Conference on RF Superconductivity (pp. 506-508). Joint Accelerator Conferences Website. https://doi.org/10.18429/JACoW-SRF2017-TUPB053
0000-0002-4809-9439 (De Silva)
De Silva, Subashini; Delayen, Jean R.; Li, Z.; Park, H.; Schaa, Volker R.W. (Ed.); He, Yuan (Ed.); Li, Lu (Ed.); and Zhao, Ning (Ed.), "Lessons learned from RF-Dipole Prototype Cavities for LHC High Luminosity Upgrade" (2018). Physics Faculty Publications. 665.