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Poster communications

Titanium Nitride Coating as a Multipactor Suppressor

Abstract : LAL-Orsay is developing an important effort on R&D and technology studies on RF power couplers for superconductive cavities. One of the most critical components of those devices is the ceramic RF window that allows the power flux to be injected in the coaxial line. The presence of a dielectric window on a high power RF line has a strong influence on the multipactor phenomena. The most important method to reduce the multipactor is to decrease the secondary emission yield of the ceramic window. Due to its low Secondary electron Emission Yield (SEY), TiN thin film is used as a multipactor suppressor coating on RF ceramic coupler windows. In this frame work, TiN deposition was made by magnetron reactive sputtering. XPS and XRD analysis were performed to control the film composition and stoechiometry. Coating thickness was optimized so that the TiN coating effectively reduces the SEY but does not cause excessive heating, due to ohmic loss. For this purpose, SEY measurements on covered and uncovered TiN Alumina substrates, multipactor level breakdown on TiN coated Cupper substrates and RRR measurements were performed for different deposit thicknesses.
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Poster communications
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Contributor : Sabine Starita <>
Submitted on : Thursday, July 1, 2010 - 2:54:38 PM
Last modification on : Wednesday, September 16, 2020 - 4:24:39 PM
Long-term archiving on: : Monday, October 4, 2010 - 11:36:32 AM


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  • HAL Id : in2p3-00496854, version 1




W. Kaabi, A. Variola, G. Keppel, V. Palmieri, A. Brinkmann, et al.. Titanium Nitride Coating as a Multipactor Suppressor. 1st International Particle Accelerator Conference (IPAC 2010), May 2010, Kyoto, Japan. Joint Accelerator Conferences Website, pp.2887-2889, 2010. ⟨in2p3-00496854⟩



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