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 industrial applications for the least money without compromising any option Reflectometry (RAINBOWS) q=0.005-0.3 20x D17 at mid range q Very efficient method to produce high performance reflectometry at low cost SANS q=0.001-0.5 same as D33 (7mm samples) Well known that SANS can be scaled down without loss of performance Tomography R=10 microns-1 mm best in world flux/resolution Dewhurst has pointed out that SANS and Tomography requirements are the same
Reflectometry Option-RAINBOWS prism a L D 1 =5m sample D 2 =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
SANS Option selector sample detector Source 60x60 30x30 Schillinger 15x15 Et. al. FRMII 0.2-5m 5m 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
Tomography Option Source D2 Res m m selector D2 60x60 8cm 1000 S 60x60 1cm 125 5x5 8 cm 80 sample 5x5 1 cm 10 D1=5m Res=(D2/D1)*S Variable wavelength+white option Wish list: M=2 beam total size=200x200 @ 6A & 5m 1. cold neutrons preferred ✔ Good range of resolution 10 microns to 1 mm 2. high intensity ✔ ✔ 3. high collimation (res=10 microns) ✔ Lead box 15 cm thick including roof is required. 4. options for energy selection ✔ 5. polarization options- D33 Keep Neutrograph in reactor low res high flux 6. highest spatial resolution ✔
Large frames for Reflectometry slits X Components before sample tomo option from 10mm-50 micron 200x200 down to prec=10 micron Source 10x70mm Slits Y 70mm-5mm Source Aperture manual changing prec 0.1mm+ collimation box aperture Reflectometry Monitor B4C absorbing baffles Graphite 2x Fast End Sample stack shutter Selector H521 Selector in/out air piston: 5-meters long translation with manual Starts at 60x120 rotation to 6% finishes 200x200 Max. weight 50 kg resolution position He3 filled- no height drive range Translation must cover vacuum 500mm precision sel/out/mono option so 0,1 mm 700 mm range 0.1mm x-translation range precision 500 mm precision 10 microns rotation: 360 deg; 0.005 deg precision gonio ± 3 deg 0.005 Source aperture: deg precision translation range360 deg 0.1 deg 10 positions: 3 for reflectometry Use old sans stack? (1x120, 2x120,3x120) 7 for sans/tomo: (60,50,40,30,20,10,5 diameter) each position take up 70 mm
Components after sample 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 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 Detector Detector He filled tank 0.1mm 200x200 - ~350mm diameter 5.5 m long 4000x4000 pixel rotation -1-5deg precision variable focal 0.005 deg area ccd scintilator Tank translation 500mm precision 0.1 mm Detector translation inside tank range=5m precision 0.1mm
Preliminary Design- Benjamin Giroud ILL22 after ADAM
Depolarization Radiography of thin steel Object He3 Polarised beam Depolarization Transmission Magnetized section 9
Using the SANS instrument D33 for Imaging- Charles Dewhurst Image Source 0.5mmØ D33 Object Magnification ~ x6 → x16 Spatial resolution ~0.9 → 0.5mm SANS Detector: Absorption & Scattering Contrast 64cm x 64cm Wavelength selectivity 2.5 x 5mm resolution
Conclusions APEX, D33 and the Neutrograph have new life breathed into them Benjamin Giroud Duncan Atkins Jaime Segura-Ruiz Charles Dewhurst Thilo Perling Jerome Beaucour
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