JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{cano:srf2021-mopfdv009,
author = {A. Cano and D. Bafia and A. Grassellino and J. Lee and M. Martinello and A.S. Romanenko and T. Spina and Z-H. Sung},
% author = {A. Cano and D. Bafia and A. Grassellino and J. Lee and M. Martinello and A.S. Romanenko and others},
% author = {A. Cano and others},
title = {{On the Nature of Surface Defects Found in 2/0 N-Doped 9-Cell Cavities}},
booktitle = {Proc. SRF'21},
% booktitle = {Proc. 20th International Conference on RF Superconductivity (SRF'21)},
pages = {336--338},
eid = {MOPFDV009},
language = {english},
keywords = {cavity, SRF, electron, survey, niobium},
venue = {East Lansing, MI, USA},
series = {International Conference on RF Superconductivity},
number = {20},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2022},
issn = {2673-5504},
isbn = {978-3-95450-233-2},
doi = {10.18429/JACoW-SRF2021-MOPFDV009},
url = {https://jacow.org/srf2021/papers/mopfdv009.pdf},
abstract = {{In this contribution, we present a systematic study on the microstructure of 1.3 GHz 9-cell TESLA type SRF cavity, processed with 2/0 Nitrogen-doping surface treatment, to explain the premature quench phenomena commonly observed in N-doping treated cavities. The microstructure characterization was carried out using Secondary electron images, advanced metallurgical techniques such as EBSD in parallel with chemical information obtained from spectroscopic techniques. The most remarkable difference is observed in the ends-cavities (1 and 9), which showed roughening of the surface, revealing a series of morphologies associated with Nb cubic phase. The cell-to-cell analysis also showed standard features such as pits with different geometry and distribution, located in grains and grain boundaries. The defects found in this system suggest that the standard electropolishing chemical etching was insufficient to eliminate history defects produced during the manufacture of the cavity, without discarding the role of the impurities, N and O, that could have induced the growth of these morphologies.}},
}