19–24 May 2024
Music City Center
US/Central timezone

Preliminary tests for the diffusion bonding of high gradient cryogenic radio-frequency cavities

MOPR33
20 May 2024, 16:00
2h
Rock 'n Roll (MCC Exhibit Hall A)

Rock 'n Roll

MCC Exhibit Hall A

Poster Presentation MC3.A16 Advanced Concepts Monday Poster Session

Speaker

Fabio Bosco (University of California, Los Angeles)

Description

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.

Funding Agency

This work is supported by DARPA under Contract N.HR001120C0072, by DOE Contract DE-SC0009914 and DE-SC0020409, by the National Science Foundation Grant N.PHY-1549132 Center from Bright Beams.

Region represented North America
Paper preparation format LaTeX

Primary author

Fabio Bosco (University of California, Los Angeles)

Co-authors

Andrea Mostacci (Sapienza University of Rome) Atsushi Fukasawa (University of California, Los Angeles) Brian Naranjo (University of California, Los Angeles) Bruno Spataro (Istituto Nazionale di Fisica Nucleare) Chad Pennington (Cornell University (CLASSE)) Evgenya Simakov (Los Alamos National Laboratory) Gerard Lawler (University of California, Los Angeles) James Rosenzweig (University of California, Los Angeles) Jared Maxson (Cornell University) Paul Carriere (RadiaBeam Technologies) Sami Tantawi (SLAC National Accelerator Laboratory)

Presentation materials

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