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Future Installations-ILL
- R. Cubitt
GOAL: To build an instrument that has the widest possible range
- f industrial applications for the least money without compromising any
- ption
Future Installations-ILL R. Cubitt APEX- Instrument for Industry - - PowerPoint PPT Presentation
Future Installations-ILL R. Cubitt APEX- Instrument for Industry - - PowerPoint PPT Presentation
Future Installations-ILL R. Cubitt APEX- Instrument for Industry Design Options D33-Reusing a SANS instrument for imaging Neutrograph All Purpose EXperiments- APEX GOAL: To build an instrument that has the widest possible range of
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D1=5m prism
a
L sample D2=5m
Uses refractive optics to measure wavelength Gain~5x D17 over first angle Q=0.01-0.1 Might be a case to combine with radiography or thin absorbing samples Reflectometry Option-RAINBOWS
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SANS Option
sample selector detector
Collimation length fixed at 5m- with variable source size can match D33 D33 source 30x30 mm^2 coll=12.8,10.3,7.8,5.3, 2.8 60x60 @ 5m (D33 coll=2.5m) 15x15 @ 5m (D33 coll=10m) Det 200x200 mm^2 Qmax=0.5A @ det=200 mm Qmin=0.003 @ 5m 6A (0.001 @ 18A) Combine with radiography with large distance for scattering contrast
0.2-5m 5m
Source 60x60 30x30 15x15 Schillinger
- Et. al. FRMII
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Tomography Option
sample selector
Variable wavelength+white option M=2 beam total size=200x200 @ 6A & 5m Good range of resolution 10 microns to 1 mm Lead box 15 cm thick including roof is required. Keep Neutrograph in reactor low res high flux Wish list:
- 1. cold neutrons preferred ✔
- 2. high intensity ✔ ✔
- 3. high collimation (res=10 microns) ✔
- 4. options for energy selection ✔
- 5. polarization options- D33
- 6. highest spatial resolution ✔
D1=5m
Source D2 Res mm 60x60 8cm 1000 60x60 1cm 125 5x5 8 cm 80 5x5 1 cm 10
D2 Res=(D2/D1)*S S
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End H521 Monitor
Source aperture: translation range360 deg 0.1 deg 10 positions: 3 for reflectometry (1x120, 2x120,3x120) 7 for sans/tomo: (60,50,40,30,20,10,5 diameter) each position take up 70 mm
Source aperture 2x Fast shutter
in/out air piston:
Selector
Selector translation with manual rotation to 6% resolution position Translation must cover sel/out/mono option so 700 mm range 0.1mm precision
Graphite
5-meters long Starts at 60x120 finishes 200x200 He3 filled- no vacuum
collimation box B4C absorbing baffles
Large frames for tomo option from 200x200 down to 10x70mm manual changing
- Max. weight 50 kg
height drive range 500mm precision 0,1 mm x-translation range 500 mm precision 10 microns rotation: 360 deg; 0.005 deg precision gonio ±3 deg 0.005 deg precision Use old sans stack?
Sample stack
Reflectometry slits X 10mm-50 micron prec=10 micron Slits Y 70mm-5mm prec 0.1mm+
Source Aperture Reflectometry
Components before sample
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Components after sample
Sample stack Detector He filled tank
~350mm diameter 5.5 m long rotation -1-5deg precision 0.005 deg Tank translation 500mm precision 0.1 mm Detector translation inside tank range=5m precision 0.1mm
Detector
200x200 - 4000x4000 pixel variable focal area ccd scintilator prism movements for max weight 500g translation range 10 mm precision 10 microns rotation range 10 deg precision 0.005 deg gonio range ± 2 deg precision 0.005 deg
Detector He filled tank
~350mm diameter 5.5 m long rotation -1-5deg precision 0.005 deg Tank translation 500mm precision 0.1 mm Detector translation inside tank range=5m precision 0.1mm
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Preliminary Design- Benjamin Giroud ILL22 after ADAM
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Depolarization Radiography of thin steel Depolarization Transmission Magnetized section He3 Object Polarised beam
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Source 0.5mmØ Image
Magnification ~ x6 → x16 Spatial resolution ~0.9 → 0.5mm Absorption & Scattering Contrast Wavelength selectivity
Object
D33
SANS Detector: 64cm x 64cm 2.5 x 5mm resolution
Using the SANS instrument D33 for Imaging- Charles Dewhurst
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