MOPR33

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URL	https://doi.org/10.18429/JACoW-IPAC2024-MOPR33
Title	Preliminary tests for the diffusion bonding of high gradient cryogenic radio-frequency cavities
Authors	F. Bosco, A. Fukasawa, B. Naranjo, G. Lawler, J. Rosenzweig University of California, Los Angeles A. Mostacci Sapienza University of Rome B. Spataro Istituto Nazionale di Fisica Nucleare C. Pennington Cornell University (CLASSE) E. Simakov Los Alamos National Laboratory J. Maxson Cornell University P. Carriere RadiaBeam Technologies S. Tantawi SLAC National Accelerator Laboratory
Abstract	High field radio frequency (RF) accelerating structures are an essential component of modern linear accelerators (linacs) with applications in photon production and ultrafast electron diffraction. Most advanced designs favor compact, high shunt impedance structures in order to minimize the size and cost of the machines as well as the power consumption. However, breakdown phenomena constitute an intrinsic limitation to high field operation which ultimately affects the performance of a given structure requiring dedicated tests. The introduction of a recent design based on cryogenic distributed coupling structures working at C-band (~6 GHz) allows to increase the shunt impedance by use of alternative distribution schemes for the RF power while mitigating the breakdowns thanks to the low temperature. In this paper we introduce the plan for high field and breakdown tests envisioned for a simple two-cell version of the aforementioned structure. Moreover, we discuss the joining procedure utilized to unify the two fabricated halves of such a structure and relying on the diffusion bonding technique which constitutes an attractive alternative to the brazing approach.
Paper	download: MOPR33.pdf
Cite	BibTeX, LaTeX, Text/Word, RIS, EndNote
Conference	15th International Particle Accelerator Conference
Series
Location	Nashville, TN
Date	19-24 May 2024
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Fulvia Pilat - Oak Ridge National Laboratory Wolfram Fischer - Brookhaven National Laboratory Robert Saethre - Oak Ridge National Laboratory Petr Anisimov - Los Alamos National Laboratory Ivan Andrian - Elettra-Sincrotrone Trieste S.C.p.A.
Online ISBN	978-3-95450-247-9
Online ISSN	2673-5490
Received	15 May 2024
Revised	21 May 2024
Accepted	21 May 2024
Issued	01 July 2024
DOI	10.18429/JACoW-IPAC2024-MOPR33
Pages	531-534
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.