Transcript On the way to neutron scattering at 40 T

On the way to neutron scattering at 40 T
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Report from this workshop
Discussions with NSF/DOE/SNS
Letter of Intent to SNS
Conceptual design project proposal
Conceptual design phase
Full proposal
Construction
Charge and spin localized structure in optimally
doped high Tc
First Step: workshop report
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Hard condensed matter
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High Tc (Dai, Lake, Y. S. Lee)
Model magnets (Broholm, Dai, Enderle, Zaliznyak)
Correlated metals (Maple, Canfield, Broholm)
Charge lattice and spin degrees of freedom in oxides (Dai, Lee)
Artificially structured magnets (Velthuis, Fritz,Fitzimmons)
– Thin films structures
– Granular and other systems
Metallurgy (Ludtka)
– micro structure and phase composition
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Biology
– Polarizing nuclei for structure determination
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Chemistry
– Molecular magnets (Lake)
– Polarized beam diffraction for spin density determination (Zaliznyak)
– Atomic scale determination of Hydrogen locations in solids (Zaliznyak)
First step workshop report
• A paragraph describing spectacular
science enabled by 40 T neutron
scattering
• If applicable an example of such science
at lower fields
• A tentative column in Kent’s table for
Magnet neutron requirements
• Send this to Frank Klose ASAP and before
May 30
Neutron instrumentation requirements
Types of measurements
Inelastic
Q range and resol
E range and resol
Atomic scale diffraction
Q range and resol
SANS?
Reflectometry?
Types of samples
Single crystal
Powder?
SANS?
Thin films?
Proton polarization for biological
samples?
Magnet requirements
Max sample size
Conditions
Temperature range
Orientation capabilities (how many axes?)
Polarization analysis?
Time dependent effects?
Other?
Field
Magnitude
Direction relative to incident beam
Split coil vs solenoid?
Access angles
Split coil
Solenoid
Sample/sample environment size