PAC2013 - List of Authors (Sethna, J.P.)

Paper	Title	Page
WEPAC12	Theoretical Description of SIS Multilayer Films for SRF Cavities	814
	S. Posen, M. Liepe Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA G. Catelani Forschungszentrum Jülich, Peter Gruenberg Institut (PGI-2), Jülich, Germany J.P. Sethna Cornell University, Ithaca, New York, USA M.K. Transtrum M.D.A.C.C., Houston, Texas, USA
	As surface magnetic fields in niobium superconducting RF (SRF) cavities prepared with modern techniques approach the fundamental limit of niobium’s superheating field, SRF researchers are looking to alternative superconductors to sustain even higher fields. However, the short coherence length of these superconductors may represent a critical vulnerability to vortex penetration at very small defects in the surface. A. Gurevich has proposed* a method of defeating this vulnerability: coating a bulk superconducting cavity with a series of very thin insulating and superconducting films. In this work, we present a thorough mathematical description of the SIS thin films proposed by Gurevich in the language of the accelerator community, to help researchers to optimize cavities made from alternative superconductors. * A. Gurevich, Appl. Phys. Lett. 88, 012511 (2006)

Paper

Title

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Theoretical Description of SIS Multilayer Films for SRF Cavities

814

S. Posen, M. Liepe
Cornell University (CLASSE), Cornell Laboratory for Accelerator-Based Sciences and Education, Ithaca, New York, USA
G. Catelani
Forschungszentrum Jülich, Peter Gruenberg Institut (PGI-2), Jülich, Germany
J.P. Sethna
Cornell University, Ithaca, New York, USA
M.K. Transtrum
M.D.A.C.C., Houston, Texas, USA

As surface magnetic fields in niobium superconducting RF (SRF) cavities prepared with modern techniques approach the fundamental limit of niobium’s superheating field, SRF researchers are looking to alternative superconductors to sustain even higher fields. However, the short coherence length of these superconductors may represent a critical vulnerability to vortex penetration at very small defects in the surface. A. Gurevich has proposed* a method of defeating this vulnerability: coating a bulk superconducting cavity with a series of very thin insulating and superconducting films. In this work, we present a thorough mathematical description of the SIS thin films proposed by Gurevich in the language of the accelerator community, to help researchers to optimize cavities made from alternative superconductors.
* A. Gurevich, Appl. Phys. Lett. 88, 012511 (2006)