Document Type

Conference Paper

Publication Date

2015

DOI

10.18429/JACoW-IPAC2015-WEPWI009

Publication Title

Proceedings of the 6th International Particle Accelerator Conference

Pages

3506-3508

Conference Name

6th International Particle Accelerator Conference, May 3-8, 2015, Richmond, Virginia

Abstract

Thermal diffusion of nitrogen in superconducting radio frequency cavities at temperatures around 800C has resulted in the increase in quality factor with a low-field Q-rise. However, the maximum accelerating gradients of these doped cavities often reduces below the values achieved by standard treatments. In this contribution, we present the results of the nitrogen diffusion into ingot niobium cavities subjected to successive material removal from the inner cavity surface by electropolishing in an effort to explore the underlying cause for the gradient degradation.

Comments

Copyright © 2015 by JACoW, Geneva, Switzerland.

Published under a Creative Commons Attribution 3.0 Unported (CC BY 3.0) license.

Original Publication Citation

Dhakal, P., Ciovati, G., Kneisel, P., Makita, J., & Myneni, G. R. (2015). Nitrogen doping study in ingot niobium cavities. In S.Henderson, E. Akers, T. Satogata, V.R.W. Schaa (Eds.), Proceedings of the 6th International Particle Accelerator Conference (3506-3508). Joint Accelerator Conferences Website. https://doi.org/10.18429/JACoW-IPAC2015-WEPWI009

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