Assessment of the structural integrity of a prototypical instrumented IFMIF high flux test module rig by fully 3D X-ray microtomography

X-ray micro-tomography studies on carbon based composite materials for porosity network characterization

“…While the maximum resolution of 2.5 m/voxel, on a relatively large sample (up to 5 mm × 5 mm × 5 mm), is a remarkable performance, the image noise might be a perturbation factor for the accurate porosity factor evaluation. In order to reduce the image noise two steps were considered: (1) reduction of reconstruction artefacts like "ring artefacts" [8] and "beam hardening artefacts" [9,10] and (2) upgrade the irradiation head of our X-ray tube with a high power diamond target for improved photon statistics. The diamond target ( Fig.…”

Assessment of X-ray tomography for irradiated IFMIF/HFTM RIG

“…A number of X-ray tomographic measurements of the HFTM rig were performed and representative results were reported previously [5]. We have demonstrated that for the HFTM rig prototype the geometry resolution is about 30 m for maximum characteristic dimension of 50 mm.…”

“…For the evaluation of the influence of the gamma radioactivity of irradiated HFTM capsule on the reconstruction in X-ray transmission tomography we used both experimental and numerically simulated data: (i) X-ray radiographies I R were measured [5] (ii) auto-radiographies were calculated using Monte Carlo simulations of gamma ray emission, transport and detection. The main parameters describing the tomographic experiment and the Monte Carlo simulation setup are listed in Table 1.…”

X-ray Micro-Tomography as a New and Powerful Tool for Characterization of MgB2 Superconductor

“…It is caused by the polychromatic structure of the energy spectrum of the X-ray generators. Several experimental techniques have been reported for beam-hardening correction [13][14][15]. However, the optimization of the tomographic measurement by experimental selection of a large set of parameters is a very laborious procedure and the result is not always guaranteed.…”

“…However, the optimization of the tomographic measurement by experimental selection of a large set of parameters is a very laborious procedure and the result is not always guaranteed. Therefore, in our approach [15], a numerical simulation procedure-time-independent multimaterial and multidimensional-coupled electron/photon Monte Carlo transport -was developed. Any important element, such as: target material, pre and post-filters and X-ray energy spectra have been studied.…”