| SRF Materials Workshop |
| May 23 & 24, 2007 |
| Fermilab, Wilson Hall |
| Wed. May 23 |
|
Location:
Curia II
Topic |
Author |
Affiliation |
| 8:30 |
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Welcome |
H. Edwards |
Fermilab |
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8:40 |
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Introduction to the workshop |
B. Strauss |
DOE |
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Session 1:Fundamental of RF superconductivity |
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Session Chair : |
Peter Kneisel |
JLAB |
| 8:40 |
9:00 |
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Introduction talk on SRF issues
about materials and surfaces |
G. Ciovati |
JLAB |
| 9:00 |
9:20 |
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Mechanisms for high field dissipation and multilayers for raising the ultimate
fields |
Alex Gurevich |
FSU |
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| 9:20 |
9:40 |
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Physics
of the Ultimate RF critical magnetic field (superheating field) |
Padamsee/J. Sethna |
Cornell |
| 9:40 |
10:10 |
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30 minutes Discussion |
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| 10:10 |
10:30 |
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Coffe Break |
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Session 2: Material properties of superconductor &
Surface Characterizations |
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Session chair : |
Hasan Padamsee |
Cornell |
| 10:30 |
10:50 |
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Introduction:
Opening remarks to update the experimental and theoretical situation for the
High-Field dissipation (high field Q-Slope) |
Hasan Padamsee |
Cornell |
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2.1 Surface analysis |
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| 10:50 |
11:10 |
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Overview: Survey
of characterization methods, XPS, SIMS, TEM… |
Michael J. Kelley |
College of William and Mary |
| 11:10 |
11:30 |
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Surface oxide studies on solid
Niobium for Superconducting RF Accelerators using variable photon energy XPS |
Hui Tian |
JLAB |
| 11:30 |
11:50 |
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Surface Analysis of samples
dissected from a cavity with high-field Q slope (XPS, Auger, EBSD, SIMS,
Optical Profilometry) |
Alexander Romanenko |
Cornell |
| 11:50 |
12:10 |
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Overview: Scanning RF
Microscopy |
Judy Wu |
U Kansas |
| 12:10 |
13:10 |
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Lunch Break |
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2.2 RF/ superconducting
properties |
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| 13:10 |
13:30 |
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Imaging
of Microwave Currents and Microscopic Sources of Nonlinearities in
Superconducting Resonators |
Steven Anlage |
U Maryland |
| 13:30 |
13:50 |
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Correlation between XPS and
temperature maps for nearly oxide-free niobium |
Grigory Eremeev |
Cornell |
| 13:50 |
14:10 |
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Overview: Review of RF measurement of
samples |
Charlie Reece |
JLAB |
| 14:10 |
14:30 |
Tunneling
Spectroscopy and Surface Modification of Nb for SRF Cavity Development |
John
Zasadzinski |
ANL/IIT |
| 14:30 |
14:50 |
|
A
Novel Method to Measure the Absolute Value of the Magnetic Penetration Depth
in Superconductors |
Steven Anlage |
U Maryland |
| 14:50 |
15:20 |
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Coffe Break and poster |
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Posters |
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Superconducting
Electromagnetic Metamaterials |
Steven Anlage |
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Imaging of Microscopic
Sources of Resistive and Reactive Nonlinearities in Superconducting Microwave
Devices |
Steven Anlage |
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Microwave Devices
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| 15:20 |
15:35 |
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Atomic scale chemical analyses of
niobium superconducting radio frequency cavity |
Kevin Yoon |
Northwestern Univ. |
| 15:35 |
15:55 |
|
Analytical electron microscopy
studies and transport characteristics of large grain niobium for SRF cavity |
Z. H. Sung |
FSU |
| 15:55 |
16:10 |
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Heat
transfer measurements of niobium for SRF cavities |
S.K. Chandrasekaran |
MSU |
| 16:10 |
16:25 |
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Critical magnetic field measurement of
MgB2 |
Tsuyoshi Tajima |
LANL |
| 16:25 |
16:55 |
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30 minutes Discussion |
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| Thu. May 24 |
|
Location: 1
West
Topic |
Author |
Affiliation |
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Session 3: New Materials for the
Future |
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Session
chair : |
David Larbalestier |
FSU |
| 8:30 |
8:50 |
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Overview: New
materials for SRF cavities |
Anne-Marie Valente |
JLAB |
| 8:50 |
9:10 |
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Atomic layer deposition |
Mike Pellin |
ANL |
| 9:10 |
9:30 |
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MgB2 thin film and its application to RF
cavities |
X. Xi |
Penn State |
| 9:30 |
10:00 |
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30 minutes Discussion |
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| 10:00 |
10:20 |
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Coffe Break and poster |
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Session 4: (innovative) Processing of materials |
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Session chair: |
Lance Cooley |
Fermilab |
| 10:20 |
10:40 |
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Overview:
Unconventional cavity processing techniques |
Claire Antoine |
Fermilab/CEA Saclay |
| 10:40 |
10:55 |
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David Swenson |
TEL Epion Inc |
| 10:55 |
11:10 |
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Plasma etching of
Niobium surface |
Marija Raskovic |
Old Dominium Univ. |
| 11:10 |
11:20 |
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ECR plasma: a
possible in-situ cavity processing technique |
Genfa Wu |
Fermilab |
| 11:20 |
11:40 |
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Novel
Surface Treatments for RRR Niobium |
Roy Crooks |
Black Laboratory |
| 11:40 |
11:50 |
|
Advanced Nb oxide surface modification by
cluster ion beams |
Z. Insepov |
ANL |
| 11:50 |
12:00 |
|
Chemical
Mechanical Polishing for Obtaining Very Smooth Surfaces: |
Sinan Muftu |
Northeastern Univ. |
| 12:00 |
12:30 |
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30 minutes Discussion |
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| 12:30 |
13:30 |
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Lunch Break |
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Session 5: Niobium production |
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Session chair : |
Chris Compton |
MSU |
| 13:30 |
13:50 |
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Introduction: Metallurgical and
Technological Request for High Purity Niobium in SRF Application |
W. Singer |
DESY |
| 13:50 |
14:10 |
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Overview of the RRR Nb
Specifications and the Evolution of SRF Technology |
Ganapati Rao Myneni |
JLAB |
| 14:10 |
14:30 |
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Microstructural Refinement of
Niobium for Superconducting RF Cavities |
K. T. Hartwig |
Texas AM, MSU |
| 14:30 |
14:50 |
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Preliminary
investigation of a model for predicting recrsytallization in Nb |
D. Baars |
MSU |
| 14:50 |
15:10 |
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Orientation Effect on Recovery and
Recrystallization of Deformed Niobium Single Crystals for Superconducting RF
Cavities |
V. Levit |
Ohio State U |
| 15:10 |
15:30 |
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Coffee break and poster |
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| 15:30 |
15:50 |
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Textures of Niobium Sheet |
Peter R. Jepson |
H.C. Starck Inc |
| 15:50 |
16:10 |
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The
Potential of TIG Welding Technology For SRF Cavity Fabrication |
C. Compton |
MSU |
| 16:10 |
16:40 |
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30 minutes Discussion |
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| 16:40 |
17:00 |
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Summary Talk of the
Workshop |
C. Antoine |
Fermilab/CEA Saclay |
| 19:00 |
20:30 |
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Dinner at Chez Leon |
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Acknowledgement |
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Summary
written by L. Cooley |
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Past Midwestern SRF materials
research meetings can be found here |
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Contact us |
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