JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
TY - CONF AU - Barbagallo, C. AU - Barriere, B.S. AU - Clement, C.S. AU - Duchesne, P. AU - Gerard, R.L.A. AU - Gerigk, F. AU - Henry, J. AU - Kaabi, W. AU - Maurin, P.M. AU - Olivier, G. AU - Olry, G. AU - Overstreet, S.A. AU - Park, G.-T. AU - Rimmer, R.A. AU - Roset, S. AU - Wang, H. AU - Zomer, Z.F. ED - Saito, Kenji ED - Xu, Ting ED - Sakamoto, Naruhiko ED - Schaa, Volker R.W. ED - Thomas, Paul W. TI - Simulations and First RF Measurements of Coaxial HOM Coupler Prototypes for PERLE SRF Cavities J2 - Proc. of SRF2023, Grand Rapids, MI, USA, 25-30 June 2023 CY - Grand Rapids, MI, USA T2 - International Conference on RF Superconductivity T3 - 21 LA - english AB - Superconducting Radio-Frequency (SRF) linac cryomodules are foreseen for the high-current multi-turn energy recovery linac PERLE (Powerful Energy Recovery Linac for Experiments). Coaxial higher order mode (HOM) couplers are the primary design choice to absorb beam-induced power and avoid beam instabilities. We have used 3D-printed and copper-coated HOM couplers for the prototyping and bench RF measurements on the copper PERLE cavities. We have started a collaboration with JLab and CERN on this effort. This paper presents electromagnetic simulations of the cavity HOM-damping performance on those couplers. Bench RF measurements of the HOMs on an 801.58 MHz 2-cell copper cavity performed at JLab are detailed. The results are compared to eigenmode simulations in CST to confirm the design. RF-thermal simulations are conducted to investigate if the studied HOM couplers undergo quenching. PB - JACoW Publishing CP - Geneva, Switzerland SP - 831 EP - 834 KW - HOM KW - cavity KW - damping KW - coupling KW - simulation DA - 2023/09 PY - 2023 SN - 2673-5504 SN - 978-3-95450-234-9 DO - doi:10.18429/JACoW-SRF2023-WEPWB103 UR - https://jacow.org/srf2023/papers/wepwb103.pdf ER -