Contact
Dr. André Bieberle
a.bieberle
hzdr.de
Phone: +49 351 260 2913
Gamma-ray computed tomography
Motivation
Gamma ray computed tomography is well suited to investigate phase fraction distributions (gas, liquid, solid) in heavy and dense industrial devices and machines, such as axial compressors, pumps, hydro-dynamic couplings, thermal hydraulic facilities, pipelines, reactors, distillation columns and other components of larger process plants. For that we developed and operate a high resolution and transportable gamma ray computed tomography scanner. It contains a collimated radiation source (nuclide: 137Cs, activity: 180 GBq, effective focal spot: 6 mm in diameter) and a radiation detector arc comprising 320 scintillation converts with a pitch of 2 mm. The radiation detector is thermally stabilized to achieve highest quantitative image quality in thermally varying environments. Projections can be obtained every second or with higher sampling frequency of up to 25 kHz. The latter is allows for angle-synchronized time-averaged computed tomography of rapidly rotating structures, such as in pumps or stirred vessels.
Cooperation
- TU Dresden
- TU Eindhoven
- TU Hamburg
- TU Dortmund
- Karlsruher Institute for Technology
- Mahle Behr GmbH
- ASB
- AREVA NP GmbH
- EVONIK Industries AG
- International Atomic Energy Agency, IAEA
References
- A. Bieberle et al.
Modular and Cost-Effective Computed Tomography Design
Sensors 24(2024)8, 2568. [doi:10.3390/s24082568] - A. Bieberle et al.
Advanced process-synchronized computed tomography for the investigation of periodic processes
Review of Scientific Instruments Vol. 89, 073111, 2018. [doi:10.1063/1.5038423] - A. Bieberle et al.
Design of a modular signal processing board (MSPB) for gamma-ray imaging applications
Nuclear Instruments and Methods in Physics Research A, 663 (1), pp. 14 - 21, 2012. [doi:10.1016/j.nima.2011.09.060] - A. Bieberle et al.
Temperature control design for a high resolution gamma-ray tomography detector
Review of Scientific Instruments Vol. 81, 014702, 2010. [doi:10.1063/1.3280184] - U. Hampel et al.
High resolution gamma ray tomography scanner for flow measurement and non-destructive testing applications
Review of Scientific Instruments Vol. 78, 103704, 2007. [doi:10.1063/1.2795648] - A. Bieberle et al.
Data acquisition system for angle synchronized gamma-ray tomography of rapidly rotating objects
Measurement Science and Technology, Vol. 18, pp. 3384-3390, 2007. [doi:10.1088/0957-0233/18/11/018]
