Zobrazeno 1 - 10
of 17
pro vyhledávání: '"C E, Reece"'
Autor:
Binping Xiao, C. E. Reece
Publikováno v:
Physical Review Accelerators and Beams, Vol 22, Iss 5, p 053101 (2019)
In this paper, we extend the Mattis-Bardeen theory to obtain the surface impedance of a two-band superconductor, and apply it to magnesium diboride (MgB_{2}) for radiofrequency (rf) superconductivity applications. The numerical results for MgB_{2} ar
Externí odkaz:
https://doaj.org/article/f937322189044a85a99d1ca3280dc937
Autor:
G, Eremeev, W, Clemens, K, Macha, C E, Reece, A M, Valente-Feliciano, S, Williams, U, Pudasaini, M, Kelley
Publikováno v:
The Review of scientific instruments. 91(7)
Superconducting radio frequency niobium cavities are the building blocks of modern accelerators for scientific applications. Lower surface resistance, higher fields, and high operating temperatures advance the reach of the future accelerators for sci
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 16, Iss 2, p 022001 (2013)
This paper describes surface studies to address roughness issues inherent to thin film coatings deposited onto superconducting radio frequency (SRF) cavities. This is particularly relevant for multilayered thin film coatings that are being considered
Externí odkaz:
https://doaj.org/article/f56677242b304328870e2594fe0958ee
Autor:
C. E. Reece, William Clemens, Anne-Marie Valente-Feliciano, S. Williams, Michael J. Kelley, Uttar Pudasaini, Kurt Macha, Grigory Eremeev
Publikováno v:
Review of Scientific Instruments. 91:073911
Superconducting radio frequency niobium cavities are the building blocks of modern accelerators for scientific applications. Lower surface resistance, higher fields, and high operating temperatures advance the reach of the future accelerators for sci
Autor:
W. M. Roach, D. B. Beringer, J. R. Skuza, W. A. Oliver, C. Clavero, C. E. Reece, R. A. Lukaszew
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 15, Iss 6, p 062002 (2012)
Thin film coatings have the potential to increase both the thermal efficiency and accelerating gradient in superconducting radio frequency accelerator cavities. However, before this potential can be realized, systematic studies on structure-property
Externí odkaz:
https://doaj.org/article/c762d68ad6794bf7a16d007e53015437
Autor:
M. Krishnan, E. Valderrama, C. James, X. Zhao, J. Spradlin, A-M Valente Feliciano, L. Phillips, C. E. Reece, K. Seo, Z. H. Sung
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 15, Iss 3, p 032001 (2012)
This paper describes energetic condensation growth of Nb films using a cathodic arc plasma, whose 60–120 eV ions penetrate a few monolayers into the substrate and enable sufficient surface mobility to ensure that the lowest energy state (crystallin
Externí odkaz:
https://doaj.org/article/22bf3fc2842a4070bce3653a305067f8
Publikováno v:
IEEE Transactions on Applied Superconductivity. 25:1-4
The wafer test cavity was designed as a short sample test system that could create a reproducible environment for the testing of superconducting materials above the Bardeen–Cooper–Schrieffer limit of niobium. The results of the sapphire test cavi
Electron backscatter diffraction of Nb3Sn coated niobium: Revealing structure as a function of depth
Autor:
Michael J. Kelley, C. E. Reece, Jonathan Angle, Grigory Eremeev, Fred A. Stevie, Jay Tuggle, Uttar Pudasaini
Publikováno v:
Journal of Vacuum Science & Technology B. 37:052901
Over the last two decades, advances in Electron Backscatter Diffraction (EBSD) have moved the technique from a research tool to an essential characterization technique in many fields of material research. EBSD is the best suited technique for determi
Autor:
K. C. Wong, C. E. Reece, W. M. Roach, A. D. Batchelor, Douglas Beringer, J. R. Skuza, Cesar Clavero, Rosa A. Lukaszew
Publikováno v:
Crystal Growth & Design. 12:2588-2593
Superconducting ultrathin films grown epitaxially onto crystalline substrates exhibit strained epitaxial growth due to lattice mismatch, which can have a significant effect on their superconducting properties. We present a complete correlation of the
Publikováno v:
IEEE Transactions on Applied Superconductivity. 21:1903-1907
A 1.3 GHz test cavity has been designed to test wafer samples of superconducting materials. This mushroom shaped cavity, operating in TE01mode, creates a unique distribution of surface fields. The surface magnetic field on the sample wafer is 3.75 ti