Name: Virtual International Workshop on Nb3Sn SRF Science, Technology, and Applications (Nb3SnSRF’20)
Start: 2020-11-10T08:00:00-05:00
End: 2020-11-13T12:05:00-05:00
Location: Online

Virtual International Workshop on Nb3Sn SRF Science, Technology, and Applications (Nb3SnSRF’20)

from Tuesday, November 10, 2020 (8:00 AM) to Friday, November 13, 2020 (12:05 PM)

Monday, November 9, 2020
Tuesday, November 10, 2020
8:00 AM Welcome - Matthias Liepe
Welcome
- Matthias Liepe
8:00 AM - 8:05 AM
8:05 AM Session 1
Session 1
8:05 AM - 9:50 AM
Contributions

8:05 AM Mitigation of Performance-Limiting Mechanisms in Nb3Sn SRF Films - Alex Gurevich (Old Dominion University )

8:25 AM Time-Dependent Ginzburg Landau simulations to guide Nb3Sn SRF cavity development - Mark Transtrum

8:50 AM Towards a Floquet theory of periodically driven superconductors - Danilo Liarte

9:10 AM $\textit{Ab Initio}$ Calculations on Point Defect Thermodynamics in Nb$_3$Sn - Nathan Sitaraman

9:30 AM First principles study of the impact of grain boundaries on Nb$_3$Sn - Michelle Kelley (Cornell)
9:50 AM Break
Break
9:50 AM - 10:05 AM
10:05 AM Session 2
Session 2
10:05 AM - 12:00 PM
Contributions

10:05 AM Optimization of vortex pinning by nanoparticles using simulations of the time-dependent Ginzburg-Landau model - Alexei Koshelev (Materials Science Division, Argonne National Laboratory)

10:25 AM Tunneling Spectroscopy studies of Nb3Sn for SRF cavities - thomas proslier (CEA)

10:45 AM Investigation of Local Nonlinear Microwave Response of Nb$_3$Sn in the Superconducting State - Steven Anlage (University of Maryland)

11:05 AM Investigation of Nb3Sn Thin Films using Magnetic Field Penetration Measurements - Iresha Harshani Senevirathne (Old Dominion University)

11:25 AM Critical Fields of Nb3Sn - Sebastian Keckert (Helmholtz-Zentrum Berlin)

11:45 AM Guided discussion: Next fundamental studies needed for advancing Nb3Sn – What are the important open questions? - Mark Transtrum
Wednesday, November 11, 2020
8:00 AM Session 1
Session 1
8:00 AM - 9:50 AM
Contributions

8:00 AM CONSTRUCTION OF Nb3Sn COATING SYSTEM AND TRIAL OF SAMPLE COATING AT KEK - Kotaro Takahashi (SOKENDAI/KEK)

8:20 AM Growth Studies at Northwestern University of Vapor Diffusion Samples from Fermilab - Jae Yel Lee (Northwestern University-Fermilab)

8:45 AM Growth Studies and Optimization of Nb3Sn Coatings - Ryan Porter

9:05 AM Nucleation of Nb3Sn films in a tin vapor diffusion process - Uttar Pudasaini (Jefferson Lab)

9:25 AM Development and Understanding of Nb3Sn films for radiofrequency applications through a sample-host 9-cell cavity - Tiziana Spina (Fermilab)
9:50 AM Break
Break
9:50 AM - 10:05 AM
10:05 AM Session 2
Session 2
10:05 AM - 12:00 PM
Contributions

10:05 AM Nb3Sn growth in vapor diffusion: process design for large surface area coatings - Uttar Pudasaini (Jefferson Lab)

10:25 AM Nb3Sn Coating of Complex Cavity Structures for SRF Accelerator Applications. - Jayendrika Tiskumara (Old Dominion University /JLab)

10:45 AM Persistence of the Nb(100) Surface Oxide Reconstruction at Elevated Temperatures - Caleb Thompson (University of Chicago)

11:05 AM Deconvoluting Initial Nb-Sn-O Interactions: Spatially Resolved Electronic Characterization of Sn Reconstructions on (3×1)-O Nb(100) - Sarah Willson (University of Chicago)

11:25 AM Spatially Resolved Adsorption Structures and Diffusion Dynamics of Sn on (3×1)-O Nb(100) - Rachael Farber (University of Chicago)

11:45 AM Guided discussion: Nb3Sn vapor diffusion growth: How does the Nb substrate impact growth? - Rachael Farber
Thursday, November 12, 2020
8:00 AM Session 3
Session 3
8:00 AM - 9:40 AM
Contributions

8:00 AM PVD deposition of Nb3Sn from an alloy target on copper. - reza valizadeh (STFC)

8:20 AM Physical Vapor Deposition of Bronze-Route Nb3Sn for SRF Cavities - Wenura Withanage (Applied Superconductivity Center, NHMFL-FSU)

8:40 AM Nb3Sn Formation Using Electroplating Method for SRF Cavity - Hayato Ito (KEK)

9:00 AM Electrochemical Bronze-Route Nb3Sn for SRF Cavities - Choong-Un Kim (Univ. of Texas at Arlington)

9:20 AM Ultra-Low Cost Approach to Superconducting Nb3Sn RF Cavities Using Melt Casted Bronze Structures - Christopher REY (e2P)
9:40 AM Break
Break
9:40 AM - 9:55 AM
9:55 AM Session 4
Session 4
9:55 AM - 12:00 PM
Contributions

9:55 AM Temperature-Dependent Characteristics of Sputtered Nb3Sn Thin Films (for Accelerator Applications) - Katrina Howard (CLASSE)

10:15 AM Nb3Sn growth by sequential sputtering: film morphology and its RF properties - Md Nizam Sayeed (Old Dominion University)

10:35 AM Magnetron sputtered Nb3Sn and V3Si thin films on copper substrates for SRF application - Stephanie Fernandez (CERN)

11:00 AM Ultramet Thin-film CVD Nb3Sn Coating Process Development for Copper SRF Cavities - Shawn McNeal (Ultramet)

11:20 AM Electrochemical deposition for generating Nb3Sn films with low surface roughness and stoichiometry - Zeming Sun (CLASSE)

11:45 AM Guided discussion: Alternative Nb3Sn growth methods - What are the challenges and next steps? - Anne-Marie Valente-Feliciano (JLAB)
Friday, November 13, 2020
8:00 AM Session 1
Session 1
8:00 AM - 9:45 AM
Contributions

8:00 AM Development of Nb3Sn cavity by vapor diffusion method at IMP - Ziqin Yang (Institute of Modern Physics, Chinese Academy of Science)

8:20 AM Surface Resistance, Frequency Dependence, and Field Limitation in Nb3Sn Cavities - Ryan Porter

8:45 AM Nb3Sn 5-cell cavity qualification for Nb3Sn cryomodule - Grigory Eremeev (FNAL)

9:10 AM Recent Nb3Sn cavity results from Fermilab - Sam Posen (FNAL)

9:30 AM Guided discussion: Most promising pathways to higher gradients – What do we think are the current limitations? - Charles Reece
9:45 AM W\ORKSHOP PHOTO
W\ORKSHOP PHOTO
9:45 AM - 9:50 AM

9:50 AM Break
Break
9:50 AM - 10:00 AM
10:00 AM Session 1
Session 1
10:00 AM - 12:00 PM
Contributions

10:00 AM Conduction cooled SRF photogun for UEM/UED applications - Roman Kostin (Euclid)

10:20 AM Field Emission Cathodes on Niobium Conduction-Cooled SRF Cavity - Daniel Mihalcea (Northern Illinois University)

10:40 AM Cryocooler conduction cooled SRF cavities: experiments and compact SRF accelerator development at Fermilab - Ram Dhuley (Fermi National Accelerator Laboratory)

11:05 AM Accelerator Stewardship with Nb3Sn at JLab - Gigi Ciovati (Jefferson Lab)

11:25 AM Conduction Cooling Studies for 2.6 GHz Nb3Sn SRF Cavities - Neil Stilin (Cornell University)

11:50 AM Guided discussion: First applications for Nb3Sn cavities – What performance demonstrations/milestones are needed to prove readiness? - Sam Posen (FNAL)
12:00 PM Closeout
Closeout
12:00 PM - 12:05 PM

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