Document Type

Conference Paper

Publication Date




Publication Title

Proceedings of the 10th International Particle Accelerator Conference



Conference Name

10th International Particle Accelerator Conference, 19-24 May, 2019, Melbourne, Australia


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.


Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.

Original Publication Citation

De Silva, S. U., & Delayen, J. R. (2019). Simulation and measurements of HOM filter of the LARP prototype RF-dipole crabbing cavity using an RF test box. In M. Boland, H. Tanaka, D. Button, R. Dowd, V.R.W. Schaa, & E. Tan (Eds.), 10th International Particle Accelerator Conference (pp. 2999-3002). Joint Accelerator Conferences Website.


0000-0002-4809-9439 (De Silva)