Demonstration of Niobium Tin in 218 MHz Low-beta Quarter Wave Accelerator Cavity
T.B. Petersen (1), M.P. Kelly (1), T. Reid (1), M. Kedzie (1), B., Guilfoyle (1), G. Chen (1), S. Posen (2), B. Tennis (2), G. Eremeev (2) ((1), Argonne National Laboratory, (2) Fermi National Accelerator Laboratory)
TL;DR
This paper demonstrates the fabrication and initial testing of a 218 MHz low-beta quarter wave niobium cavity coated with Nb3Sn, highlighting its potential for higher temperature operation and reduced cooling needs in SRF accelerators.
Contribution
It presents the first demonstration of Nb3Sn coating on a low-beta quarter wave cavity, expanding the application of this promising material beyond high-beta elliptical cavities.
Findings
Successful fabrication and coating of the Nb3Sn on the cavity
Initial cold test results indicate promising performance
Potential for cryocooler-based SRF systems
Abstract
A 218 MHz quarter wave niobium cavity has been fabricated for the purpose of demonstrating Nb3Sn technology on a low-beta accelerator cavity. Niobiumtin has been established as a promising next generation SRF material, but development has focused primarily in high-beta elliptical cell cavities. This material has a significantly higher TC than niobium, allowing for design of higher frequency quarter wave cavities (that are subsequently smaller) as well as for significantly lowered cooling requirements (possibly leading to cryocooler based designs). The fabrication, initial cold testing, and Nb3Sn coating are discussed as well as test plans and details of future applications.
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Taxonomy
TopicsParticle accelerators and beam dynamics · Gyrotron and Vacuum Electronics Research · Particle Accelerators and Free-Electron Lasers