How tungsten alloy CT target work with radiation

There are a few other notable approaches to fast tomography using x-rays or gamma rays. Since all of the above-mentioned approaches have numerous drawbacks and limitations regarding multiphase flow tomography, it was decided to design and build up a dedicated electron beam x-ray CT scanner for this application. The decision for an electron beam type CT and against a CT with stationary gated sources was due to several reasons. First, electron beam technology provides excellent versatility since the electron beam can be almost arbitrarily steered and shaped as needed. In the simplest case the electron beam will be swept along a semicircular target as in medical electron beam CT to generate projection data from a single plane. Moreover, subsequent sweeping on different circular paths on the target enables multi-slice CT as well as velocity measurement for two-phase flows. Additional beam optics can be provided to shape the focal spot as required and to adjust the beam focus when scanning at different axial positions (planes). Only one beam power supply is required. Another strong argument is the straightforward upgrade capability towards higher x-ray energy by introduction of high-energy electron beam generators or superconducting accelerators. Therefore, tungsten alloy material will have advantage in this case.