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7th SRF Materials Workshop

Jul 16 – 17, 2012
Jefferson Lab
US/Eastern timezone

Contribution List

54 / 54
50. Welcome - Andrew Hutton, Associate Director for Accelerator Operations, Research, and Development
7/16/12, 8:30 AM
51. Meeting logistics - Charlie Reece, local organizing chair
Reece
7/16/12, 8:35 AM
1. Overview of cavity requirements for high intensity and high energy
C. Ginsburg (Fermilab)
7/16/12, 8:40 AM
2. FRIB SRF Cavities
C. Compton (MSU/FRIB)
7/16/12, 8:55 AM
3. Needs for SRF cavities for the Next Generation Light Source
John Corlett (LBL)
7/16/12, 9:10 AM
Via WebEx
4. Accelerator R&D News
Michael Zisman (DOE detailee)
7/16/12, 9:25 AM
10. Discussion - Overview topics
7/16/12, 9:40 AM
5. Tuning the superheating and RF break-down fields of type-II superconductors by impurities
Fareh Lin (ODU)
7/16/12, 10:20 AM
6. Calculations of hotspots caused by trapped vortices
A. Gurevich (ODU)
7/16/12, 10:35 AM
7. DFT analyses of structures that limit SRF cavity performance: I. interactions between Nb, H, and native defects
D. Ford (Fermilab / NWU)
7/16/12, 10:50 AM
8. DFT analyses of structures that limit SRF cavity performance: II. interactions with other interstitials, chiefly oxygen
D. Ford (Fermilab / NWU)
7/16/12, 11:00 AM
11. The Closing Quasiparticle Spectral Gap and its Implications for Nb3Sn
Sam Posen (Cornell)
7/16/12, 11:10 AM
12. Quench and trapped flux studies at Cornell
Daniel Gonnella (Cornell)
7/16/12, 11:25 AM
13. Variation of Surface Superconductivity with cold-work deformations on Superconducting RF quality Niobium
Zuhawn Sung (NHMFL / FSU)
7/16/12, 11:40 AM
14. Laser heating and laser scanning microscopy of SRF cavities
Gigi Ciovati (JLab)
7/16/12, 11:55 AM
15. Discussion - Theory and basic measurements
7/16/12, 12:10 PM
16. Raw materials specifications and material batch history
Lance Cooley (FNAL)
7/16/12, 1:30 PM
17. Niobium RRR and Ta specifications for SRF cavities: a critical review
Gigi Ciovati (JLab)
7/16/12, 1:45 PM
20. Examination of surface damage layer on SRF cavities using EBSD
Di Kang (MSU)
7/16/12, 2:00 PM
19. Using resistivity measurements to track uptake of hydrogen as a function of material working
Alexander Dzyuba (FNAL)
7/16/12, 2:15 PM
18. Recovery of Phonon Peak in Annealed Niobium as a Function of Initial Strain and Hydrogen Concentration
Saravan Chandrasekaran (MSU)
7/16/12, 2:30 PM
21. Requirements for crystal growth of single crystal SRF niobium
John Wallace (Casting Analysis Corp)
7/16/12, 3:00 PM
23. In-situ tensile tests on single crystal specimens with different orientations
Di Kang (MSU)
7/16/12, 3:15 PM
24. Refining Crystal Plasticity Finite Element Model for Deformation of Single Crystal Niobium
Aboozar Mapar, Thomas Bieler (MSU)
7/16/12, 3:30 PM
22. Ingot niobium - the Choice Materials for Future SRF Cavity Applications?
Peter Kneisel (JLab)
7/16/12, 3:45 PM
49. Discussion - Raw materials
7/16/12, 4:00 PM
25. High Q0 studies at FNAL
Anna Grassellino (FNAL)
7/16/12, 4:30 PM
27. High Q cavities at Cornell
Nicholas Valles (Cornell)
7/16/12, 4:45 PM
31. Depth profiling by HF rinsing and an increase in Q0
Alexander Romanenko (FNAL)
7/16/12, 5:00 PM
55. Mechanisms of niobium electropolishing for SRF cavities
Ashwini Chandra (Ohio State), Michael Sumption
7/16/12, 5:15 PM
26. High temperature heat treatment to raise the quality factor of large grain niobium cavities
Pashupati Dhakal (JLab)
7/16/12, 5:30 PM
48. Evaluations of mechanical polishing for "baseline" and "acid free" processing
Charlie Cooper (FNAL)
7/17/12, 8:45 AM
29. Direct observation of hydrides in cavity-grade niobium
Alexander Romanenko (FNAL)
7/17/12, 9:00 AM
47. Genesis of topography by buffered chemical polishing of niobium
Liang Zhao (W&M)
7/17/12, 9:15 AM
30. Recent progress with VEP at Cornell
Fumio Furuta (Cornell)
7/17/12, 9:30 AM
46. Development of Plasma Processing Technologies for SRF Cavities
Janardan Upadhyay (ODU)
7/17/12, 9:45 AM
52. Discussion - Processing progress
7/17/12, 10:00 AM
28. SIMS Characterization of Impurity Elements in Nb: The Effect of Heat Treatments
Prateek Maheshwari (NCSU)
7/17/12, 11:00 AM
37. Near-Field Nonlinear Microwave Microscopy of Bulk Nb Surfaces
Steven Anlage (U Maryland)
7/17/12, 11:15 AM
38. Preliminary TEM results on high field hot/cold spot cutouts
Yulia Trenikhina (IIT/FNAL)
7/17/12, 11:30 AM
39. Signatures of RF hot spots by superconducting tunnel-junction and Raman spectroscopies
John Zasadzinski (IIT)
7/17/12, 11:45 AM
40. Low-field Quench, HAZ Pits and Strain in a Prototype Cavity for the European XFEL
Roy Crooks (Black Labs Inc.)
7/17/12, 12:00 PM
45. CYCLOPS - CavitY CaLibrated Optical Profilometry System
John Bearden (MicroDynamics, Inc)
7/17/12, 12:15 PM
Internal interferometric profilometry
41. LEAP investigations of hydrogen precipitates in SRF niobium
David Seidman (Northwestern)
7/17/12, 1:30 PM
42. In-situ study of Nb oxide and hydride for SRF cavity applications using electron energy loss spectroscopy
Runzhe Tao (UIC)
7/17/12, 1:45 PM
43. Scanning Tunneling Microscopy Studies of Single-Crystal Niobium Oxidation
Natalie Kautz (U Chicago)
7/17/12, 2:00 PM
44. Atomic-scale characterization of niobium for SRF cavities using ultraviolet laser-assisted local- electrode atom-probe tomography and aberration-corrected transmission electron microscopy
YoonJun Kim (Northwestern)
7/17/12, 2:15 PM
54. Discussion - Nb characterization
7/17/12, 2:30 PM
32. Spin-forming of seamless cavities
Enzo Palmieri (INFN/Legnaro, U Padua)
7/17/12, 3:00 PM
33. Niobium tube specification and procurement for seamless forming
Lance Cooley (FNAL)
7/17/12, 3:20 PM
34. Bulge testing of copper and niobium
Ted Collings (Ohio State)
7/17/12, 3:30 PM
35. Fabrication of Seamless Nb Tube for SRF Cavities
K. T. Hartwig (TAMU)
7/17/12, 3:45 PM
53. Discussion - Seamless forming
7/17/12, 4:00 PM
9. magnetic flux structure under different fields in cavity niobium by Bitter decoration
Fedor Barkov (Fermilab)

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