Jochen Stahn (LNS), Christian Schanzer (LNS)

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Polarizers and Polarizing Benders for HYSPEC and
FOCUS

• Jochen Stahn (LNS), Christian Schanzer (LNS)
• Polarizers
• Possible Polarizing Analyzers for Wide Angle ToF
• -gt Simulations (Uwe Filges)

Peter Allenspach Head of Laboratory for
Developments and Methods (LDM) Condensed Matter
Research with Neutrons and Muons Paul Scherrer
Institute
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Polarizers
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Polarizers
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Polarizers
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Polarizers
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Polarizers
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Polarizers
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Polarizers
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Polarizers
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Polarizers
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Polarizers
ideal polarizer
reflectivity
Qz
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Polarizers
real polarizer
reflectivity
Qz
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Correction of finite polarization
measured intensities I, I-, I--, I-
Experiment finite polarization/analysis
analyzer
sample
polarizer
nn-1/2
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Correction of finite polarization
identical and symmetric properties of
polarizer/analyzer
? flipping ratio
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Possible polarizing analyzers

Both spin states

Small coated area
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Detector coverage
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Contamination
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Possible polarizing analyzers

Detector coverage

Coated area
-
Angular offset
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Contamination
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Possible polarizing analyzers

No contamination

Coated area

Detector coverage
-
Lower transmission
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Possible polarizing analyzers

High detector coverage

Coated area

No angular offset
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Contamination
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Technology
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Possible polarizing analyzers

High detector coverage

No angular offset
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Huge coated area
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Contamination
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Simulations

• -gt Uwe Filges (tomorrow morning)