Ultra fast electron beam x-ray tomography and its application to multi phase flow measurement


Ultra fast electron beam x-ray tomography and its application to multi phase flow measurement

Hampel, U.; Fischer, F.

An ultra fast electron beam CT scanner is introduced which has been developed for flow measurement applications. Its basic design comprises an electron gun with beam optics and fast electromagnetic deflection system and an ultra fast X-ray detec-tor based on room-temperature semiconductor converters. As in other tomographic imaging modalities radiographic projections are generated by a moving X-ray source, in this case the focal spot of the focused electron beam on a circular tungsten target, which circulates across the target by virtue of electromagnetic beam deflection. The electron beam parameters are 150 kV acceleration voltage, max. 10 kW beam power, 1 mm focal spot size and 7 kHz maximum beam sweeping frequency. The detectors with 1.5 mm pitch allow a spatial resolution of about 1 mm. Maximum object size is 120 mm and maximum imaging rate is 7000 cross-sectional images per second. The scanner has been employed for multiphase flow measurement studies and may also be used for small animal scanning. In the presentation we will discuss a few applica-tion examples in the fields of flow measurement and small animal diagnostics.

Keywords: ultra fast x-ray tomography; electron beam tomography; multiphase flow

  • Lecture (Conference)
    IEEE Dresden 2008 - Workshop on X-Ray Micro Imaging of Materials, Devices, and Organisms, 22.-24.10.2008, Dresden, Germany
  • Contribution to proceedings
    IEEE Dresden 2008 - Workshop on X-Ray Micro Imaging of Materials, Devices, and Organisms, 22.-24.10.2008, Dresden, Germany
    IEEE NSS/MIC/RTSD Conference Record

Permalink: https://www.hzdr.de/publications/Publ-11758
Publ.-Id: 11758