Name: 7th SRF Materials Workshop
Start: 2012-07-16T08:00:00-04:00
End: 2012-07-17T18:00:00-04:00
Location: Jefferson Lab

7th SRF Materials Workshop

from Monday, July 16, 2012 (8:00 AM) to Tuesday, July 17, 2012 (6:00 PM)

Monday, July 16, 2012

8:00 AM Registration and Continental Breakfast
Registration and Continental Breakfast
8:00 AM - 8:30 AM
Room: CEBAF Center F113
8:30 AM
8:30 AM - 8:40 AM
Room: CEBAF Center F113
Contributions

8:30 AM Welcome - Andrew Hutton, Associate Director for Accelerator Operations, Research, and Development

8:35 AM Meeting logistics - Charlie Reece, local organizing chair - Reece
8:40 AM
8:40 AM - 10:00 AM
Room: CEBAF Center F113
Contributions

8:40 AM Overview of cavity requirements for high intensity and high energy - C. Ginsburg (Fermilab)

8:55 AM FRIB SRF Cavities - C. Compton (MSU/FRIB)

9:10 AM Needs for SRF cavities for the Next Generation Light Source - John Corlett (LBL)

9:25 AM Accelerator R&D News - Michael Zisman (DOE detailee)

9:40 AM Discussion - Overview topics
10:00 AM Break
Break
10:00 AM - 10:20 AM
Room: CEBAF Center F113
10:20 AM
10:20 AM - 12:30 PM
Room: CEBAF Center F113
Contributions

10:20 AM Tuning the superheating and RF break-down fields of type-II superconductors by impurities - Fareh Lin (ODU)

10:35 AM Calculations of hotspots caused by trapped vortices - A. Gurevich (ODU)

10:50 AM DFT analyses of structures that limit SRF cavity performance: I. interactions between Nb, H, and native defects - D. Ford (Fermilab / NWU)

11:00 AM DFT analyses of structures that limit SRF cavity performance: II. interactions with other interstitials, chiefly oxygen - D. Ford (Fermilab / NWU)

11:10 AM The Closing Quasiparticle Spectral Gap and its Implications for Nb3Sn - Sam Posen (Cornell)

11:25 AM Quench and trapped flux studies at Cornell - Daniel Gonnella (Cornell)

11:40 AM Variation of Surface Superconductivity with cold-work deformations on Superconducting RF quality Niobium - Zuhawn Sung (NHMFL / FSU)

11:55 AM Laser heating and laser scanning microscopy of SRF cavities - Gigi Ciovati (JLab)

12:10 PM Discussion - Theory and basic measurements
12:30 PM Lunch Break
Lunch Break
12:30 PM - 1:30 PM
Room: CEBAF Center F113
1:30 PM
1:30 PM - 4:30 PM
Room: CEBAF Center F113
Contributions

1:30 PM Raw materials specifications and material batch history - Lance Cooley (FNAL)

1:45 PM Niobium RRR and Ta specifications for SRF cavities: a critical review - Gigi Ciovati (JLab)

2:00 PM Examination of surface damage layer on SRF cavities using EBSD - Di Kang (MSU)

2:15 PM Using resistivity measurements to track uptake of hydrogen as a function of material working - Alexander Dzyuba (FNAL)

2:30 PM Recovery of Phonon Peak in Annealed Niobium as a Function of Initial Strain and Hydrogen Concentration - Saravan Chandrasekaran (MSU)

3:00 PM Requirements for crystal growth of single crystal SRF niobium - John Wallace (Casting Analysis Corp)

3:15 PM In-situ tensile tests on single crystal specimens with different orientations - Di Kang (MSU)

3:30 PM Refining Crystal Plasticity Finite Element Model for Deformation of Single Crystal Niobium - Aboozar Mapar Thomas Bieler (MSU)

3:45 PM Ingot niobium - the Choice Materials for Future SRF Cavity Applications? - Peter Kneisel (JLab)

4:00 PM Discussion - Raw materials
4:30 PM
4:30 PM - 5:45 PM
Room: CEBAF Center F113
Contributions

4:30 PM High Q0 studies at FNAL - Anna Grassellino (FNAL)

4:45 PM High Q cavities at Cornell - Nicholas Valles (Cornell)

5:00 PM Depth profiling by HF rinsing and an increase in Q0 - Alexander Romanenko (FNAL)

5:15 PM Mechanisms of niobium electropolishing for SRF cavities - Ashwini Chandra (Ohio State) Michael Sumption

5:30 PM High temperature heat treatment to raise the quality factor of large grain niobium cavities - Pashupati Dhakal (JLab)
5:45 PM Networking reception
Networking reception
5:45 PM - 6:15 PM
Room: CEBAF Center Attrium

6:15 PM Browse and Eat Reception
Browse and Eat Reception
6:15 PM - 8:00 PM
Room: TEDF - New SRF lab wing
Tuesday, July 17, 2012

8:00 AM Continental breakfast
Continental breakfast
8:00 AM - 8:30 AM
Room: CEBAF Center F113
8:30 AM
8:30 AM - 10:30 AM
Room: CEBAF Center F113
Contributions

8:45 AM Evaluations of mechanical polishing for "baseline" and "acid free" processing - Charlie Cooper (FNAL)

9:00 AM Direct observation of hydrides in cavity-grade niobium - Alexander Romanenko (FNAL)

9:15 AM Genesis of topography by buffered chemical polishing of niobium - Liang Zhao (W&M)

9:30 AM Recent progress with VEP at Cornell - Fumio Furuta (Cornell)

9:45 AM Development of Plasma Processing Technologies for SRF Cavities - Janardan Upadhyay (ODU)

10:00 AM Discussion - Processing progress
10:30 AM Break & Workshop group photo
Break & Workshop group photo
10:30 AM - 11:00 AM
Room: CEBAF Center F113
11:00 AM
11:00 AM - 12:30 PM
Room: CEBAF Center F113
Contributions

11:00 AM SIMS Characterization of Impurity Elements in Nb: The Effect of Heat Treatments - Prateek Maheshwari (NCSU)

11:15 AM Near-Field Nonlinear Microwave Microscopy of Bulk Nb Surfaces - Steven Anlage (U Maryland)

11:30 AM Preliminary TEM results on high field hot/cold spot cutouts - Yulia Trenikhina (IIT/FNAL)

11:45 AM Signatures of RF hot spots by superconducting tunnel-junction and Raman spectroscopies - John Zasadzinski (IIT)

12:00 PM Low-field Quench, HAZ Pits and Strain in a Prototype Cavity for the European XFEL - Roy Crooks (Black Labs Inc.)

12:15 PM CYCLOPS - CavitY CaLibrated Optical Profilometry System - John Bearden (MicroDynamics, Inc)
12:30 PM Lunch break
Lunch break
12:30 PM - 1:30 PM
Room: CEBAF Center F113
1:30 PM
1:30 PM - 3:00 PM
Room: CEBAF Center F113
Contributions

1:30 PM LEAP investigations of hydrogen precipitates in SRF niobium - David Seidman (Northwestern)

1:45 PM In-situ study of Nb oxide and hydride for SRF cavity applications using electron energy loss spectroscopy - Runzhe Tao (UIC)

2:00 PM Scanning Tunneling Microscopy Studies of Single-Crystal Niobium Oxidation - Natalie Kautz (U Chicago)

2:15 PM 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)

2:30 PM Discussion - Nb characterization
3:00 PM
3:00 PM - 4:15 PM
Room: CEBAF Center F113
Contributions

3:00 PM Spin-forming of seamless cavities - Enzo Palmieri (INFN/Legnaro, U Padua)

3:20 PM Niobium tube specification and procurement for seamless forming - Lance Cooley (FNAL)

3:30 PM Bulge testing of copper and niobium - Ted Collings (Ohio State)

3:45 PM Fabrication of Seamless Nb Tube for SRF Cavities - K. T. Hartwig (TAMU)

4:00 PM Discussion - Seamless forming
4:15 PM Break
Break
4:15 PM - 4:30 PM
Room: CEBAF Center F113

4:30 PM

4:30 PM - 6:00 PM
Room: CEBAF Center F113