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pro vyhledávání: '"Eric M. Lechner"'
Autor:
Eric M. Lechner, Basu Dev Oli, Junki Makita, Gianluigi Ciovati, Alex Gurevich, Maria Iavarone
Publikováno v:
Frontiers in Electronic Materials, Vol 4 (2024)
Externí odkaz:
https://doaj.org/article/0bf2c0c15c7749f19b5aff4e5976827c
Autor:
Eric M. Lechner, Basu Dev Oli, Junki Makita, Gianluigi Ciovati, Alex Gurevich, Maria Iavarone
Publikováno v:
Frontiers in Electronic Materials, Vol 3 (2023)
We report radio-frequency measurements of quality factors and temperature mapping of a nitrogen doped Nb superconducting RF cavity. Cavity cutouts of hot and cold spots were studied with low temperature scanning tunneling microscopy and spectroscopy,
Externí odkaz:
https://doaj.org/article/852e5ea49cc543d88d50052d8f8fbf5a
Publikováno v:
Physical Review Accelerators and Beams, Vol 26, Iss 10, p 103101 (2023)
Surface finish plays an essential role in the performance of superconducting radio frequency cavities. Several surface treatments have been developed to reduce surface resistance at a moderate accelerating gradient. We investigated the effects of seq
Externí odkaz:
https://doaj.org/article/e15e8288f904472fa9e8433f3fa62015
Publikováno v:
Journal of Vacuum Science & Technology B. 41
Detection of surface contamination on niobium materials used in superconducting radio frequency (SRF) applications is difficult due to quantitative sensitivity and near-atomic depth resolution needed. Inspection of samples known to have experienced s
Autor:
Jonathan W. Angle, Eric M. Lechner, Ari D. Palczewski, Charles E. Reece, Fred A. Stevie, Michael J. Kelley
Publikováno v:
Journal of Vacuum Science & Technology B. 40:024003
The importance of SIMS analyses for “N-doped” impurity alloyed niobium and other surface-alloyed materials continues to increase. A major hurdle is the uncertainty of instrument calibration due to changes in sample height either from sample surfa