MCT Beamline
Table 1. Basic beamline parameters.
Source | Bending magnet (1.3 T); E (critical) 7.95 keV |
Hutches | Centred at ~15 m, ~24 m & ~31 m |
Energy range | 8 – 40 keV (+ filtered-white & pink) |
Monochromator (DMM) | 3 multilayer stripes: ∆E/E ~ 0.5% & 3% |
Mirror (VBM) | Single-bounce vertical, bendable (concave & convex); 2 stripes |
Beam size | Max. 44 mm (H) x 6.6 mm (V) at 22 m, 64 mm (H) x 9.6 mm (V) at 32 m |
Detectors | CMOS- & CCD-based with scintillators & specialised magnifying optics |
MCT photon-delivery modes:
white beam;
monochromatic beam (8 -> 40 keV with 3% band-pass or 8 → 20 keV with 0.5% band-pass) delivered by double-multilayer monochromator (DMM);
monochromatic beam in conjunction with VBM to increase the beam in vertical direction;
pink beam delivered by vertical-bounce mirror (VBM) to cut off high-end energy.
Imaging detectors :
white-beam detector – for all delivery modes;
mono-beam detector – for X-ray energies ≤ 20 keV.
These detectors are based on pco.edge 5.5 scientific CMOS cameras (2560 pixels (horizontal) x 2160 pixels (vertical) with a native pixel size of 6.5 μm). A variety of scintillators & objective lenses are available depending on user requirements for collection efficiency, spatial resolution & field-of-view. The end result will be limited by the detector FOV & the beam size.
Absorption-contrast & propagation-based phase-contrast imaging modalities will be available using the 3 m long first optical table in hutch B.
A separate, table-mounted shutter will be available if needed, as will two ionisation chambers capable of monitoring beam flux. If dose rate is an issue, for radiation-sensitive samples, a calibrated dosimetry system is available.
Both “step-&-shoot” & “on-the-fly” scan modes for CT data collection are available.
CT data sets are able to be reconstructed at the beamline using the ASCI high-performance computing system with dedicated compute nodes & software specifically developed for this task. More detailed data processing, analysis & visualisation will also be facilitated via remote access to ASCI following the conclusion of the experiment.
It is essential that those planning to submit experiment proposals for use of the MCT beamline, consult beamline staff to discuss the technical details & feasibility, prior to final submission.
Contact:
Table 2. White-beam detector for energy range 8-40 keV (pco.edge 5.5)
Magnification | FOV (mm2) (hor) x (ver) | Effective pixel size (µm) | Image shape (hor) x (ver) |
1X | 16.6 x 4* | 6.5 | 2560 x 2160 |
1.8X | 9.216 x 4* | 3.6 | 2560 x 2160 |
4.5X | 3.7 x 3.1 | 1.434 | 2560 x 2160 |
9X | 1.848 x 1.56 | 0.722 | 2560 x 2160 |
18X | 0.92 x 0.78 | 0.361 | 2560 x 2160 |
*4 mm is limited by the beam size, dark region on the remaining area
Table 3. Monochromatic-beam detector for energy ≤ 20 keV (pco.edge 5.5)
Magnification | FOV (mm2) (hor) x (ver) | Effective pixel size (µm) | Image shape (hor) x (ver) |
1.25X | 13.3 x 4* | 5.2 | 2560 x 2160 |
2X | 8.3 x 4* | 3.25 | 2560 x 2160 |
4X | 4.16 x 3.5 | 1.625 | 2560 x 2160 |
10X | 1.66 x 1.4 | 0.65 | 2560 x 2160 |
20X | 0.83 x 0.70 | 0.325 | 2560 x 2160 |
*4 mm is limited by the beam size, dark region on the remaining area
Table 4. High-speed detector for energy range 8-40 keV (Phantom S710) - now available !
Magnification | FOV (mm2) (hor) x (ver) | Effective pixel size (µm) | Image shape (hor) x (ver) |
---|---|---|---|
2X | 12.8 x 4* | 10 | 1280 x 800 |
5X | 5.12 x 3.2 | 4 | 1280 x 800 |
7.5X | 3.414 x 2.134 | 2.667 | 1280 x 800 |
10X | 2.56 x 1.6 | 2 | 1280 x 800 |
*4 mm is limited by the beam size, dark region on the remaining area
Several example for sample mounting:
Proposal Admin:
Merit proposal deadline can be found in this link Synchrotron proposal
Proposal submission via Australian Synchrotron Portal
Contact us as a group at as-mct@ansto.gov.au