SRF2017 - List of Keywords (radio-frequency)

Paper	Title	Other Keywords	Page
THPB044	Update on Sample Host Cavity Design Work for Measuring Flux Entry and Quench Field	cavity, ion, niobium, SRF	851
	R.D. Porter, M. Liepe, J.T. Maniscalco, R.A. Strauss Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
	Current state-of-the-art Niobium superconducting radio-frequency (SRF) accelerator cavities have reached surface magnetic field close to the theoretical maximum set by the superheating field. Further increasing accelerating gradients will require new superconducting materials for accelerator cavities that are capable of supporting higher surface magnetic fields. This necessitates measuring the quench fields of new materials in high power RF fields. Previous work at Cornell University has used electromagnetic simulations to optimize the shape of a dipole mode sample host cavity such that the surface magnetic fields on the sample are high compared to the energy inside the cavity and the surface magnetic field on the rest of the cavity. In this paper we present an update of the design that includes how to mount samples in the cavity and the addition of a low field chamber.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-THPB044
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THPB078	Fabrication of Large-area MgB2 Films on Copper Substrates	ion, cavity, niobium, SRF	917
	X. Guo, K.X. Liu, Z. Ni PKU, Beijing, People's Republic of China Q. Feng, C. Yang Peking University, Beijing, People's Republic of China
	Magnesium diboride (MgB2) is a promising candidate material for SRF cavities because of its higher transition temperature and critical field compared with niobium. To meet the demand of RF test devices, the fabrication of large-area MgB2 films on metal substrates is needed. In this work, MgB2 films with 50-mm diameter were fabri-cated on Cu substrates by using an improved HPCVD setups at Peking University. The transition temperatures of MgB2 film on Cu substrate and with Mo buffer layer on Cu substrate are 36.2 K and 36.5 K, respectively. The fabrication processes, surface morphology, superconduct-ing properties of these large-area MgB2 films are present-ed.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-THPB078
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

THPB044

Update on Sample Host Cavity Design Work for Measuring Flux Entry and Quench Field

cavity, ion, niobium, SRF

851

R.D. Porter, M. Liepe, J.T. Maniscalco, R.A. Strauss
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA

Current state-of-the-art Niobium superconducting radio-frequency (SRF) accelerator cavities have reached surface magnetic field close to the theoretical maximum set by the superheating field. Further increasing accelerating gradients will require new superconducting materials for accelerator cavities that are capable of supporting higher surface magnetic fields. This necessitates measuring the quench fields of new materials in high power RF fields. Previous work at Cornell University has used electromagnetic simulations to optimize the shape of a dipole mode sample host cavity such that the surface magnetic fields on the sample are high compared to the energy inside the cavity and the surface magnetic field on the rest of the cavity. In this paper we present an update of the design that includes how to mount samples in the cavity and the addition of a low field chamber.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-THPB044

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPB078

Fabrication of Large-area MgB2 Films on Copper Substrates

ion, cavity, niobium, SRF

917

X. Guo, K.X. Liu, Z. Ni
PKU, Beijing, People's Republic of China
Q. Feng, C. Yang
Peking University, Beijing, People's Republic of China

Magnesium diboride (MgB2) is a promising candidate material for SRF cavities because of its higher transition temperature and critical field compared with niobium. To meet the demand of RF test devices, the fabrication of large-area MgB2 films on metal substrates is needed. In this work, MgB2 films with 50-mm diameter were fabri-cated on Cu substrates by using an improved HPCVD setups at Peking University. The transition temperatures of MgB2 film on Cu substrate and with Mo buffer layer on Cu substrate are 36.2 K and 36.5 K, respectively. The fabrication processes, surface morphology, superconduct-ing properties of these large-area MgB2 films are present-ed.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SRF2017-THPB078

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)