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| TUPTB041 |
Visual, Optical and Replica Inspections: Surface Preparation of 650 MHz Nb Cavity for PIP-II Linac |
cavity, SRF, linac, niobium |
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- V. Chouhan, D.J. Bice, D.A. Burk, M.K. Ng, G. Wu
Fermilab, Batavia, Illinois, USA
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Surface preparation of niobium superconducting RF cavities is a critical step for achieving good RF performance under the superconducting state. Surface defect, roughness, and contamination affect the accelerating gradient and quality factor of the cavities. We report surface inspection methods used to control the surface processing of 650 MHz cavities that will be used in the pre-production cryomodule for PIP-II linac. The cavity surface was routinely inspected visually, with an optical camera, and by microscopic scanning of surface replicas. This article covers details on the surface inspection methods and surface polishing process used to repair the surface.
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| DOI • |
reference for this paper
※ doi:10.18429/JACoW-SRF2023-TUPTB041
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| About • |
Received ※ 19 June 2023 — Revised ※ 24 June 2023 — Accepted ※ 27 June 2023 — Issue date ※ 12 July 2023 |
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