Document Type

Conference Paper

Publication Date

2015

Publication Title

Proceedings of the 6th International Particle Accelerator Conference

Pages

3558-3560

Conference Name

6th International Particle Accelerator Conference (IPAC 2015)

Abstract

Impurities deposited on the surface of Nb during both the forming and welding of accelerator cavities add to the imperfections of the sheet metal, which then affects the overall performance of the cavities. This leads to a drop in the Q factor and limits the maximum acceleration gradient achievable per unit length of the cavities. The performance can be improved either by adjusting the fabrication and preparation parameters, or by mitigating the effects of fabrication and preparation techniques used. We have developed the experimental setup to determine Secondary Electron Yield (SEY) from the surface of Nb samples. Our aim is to show the effect of plasma processing on the SEY of Nb. The setup measures the secondary electron energy distribution at various incident angles as measured between the electron beam and the surface of the sample. The goal is to determine the SEY on non-treated and plasma treated surface of electron beam welded samples. Here we describe the experimental setup, plasma treatment device, and fabrication and processing of the Nb samples.

Comments

Copyright © 2015 by the Author(s).

Published under a Creative Commons Attribution 3.0 unported license.

https://creativecommons.org/licenses/by/3.0/

Original Publication Citation

Basovic, M., Samolov, A., Cuckov, F., Popovic, S., Tomovic, M., & Vuskovic, L. (2015). Effects of plasma processing on secondary electron yield of Niobium samples. In Proceedings of the 6th International Particle Accelerator Conference, Richmond, Virginia, May 3-8, 2015 (pp. 3558-3560).

ORCID

0000-0002-3668-4841 (Popovic), 0000-0002-0938-4237 (Tomovic), 0000-0002-7202-7283 (Vuskovic)

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