Publications Repository - Helmholtz-Zentrum Dresden-Rossendorf
2 PublicationsHigh-resolution gamma ray detector for process tomography
Hampel, U.; Bieberle, A.; Schleicher, E.; Kronenberg, J.
Abstract
We developed a high-resolution gamma ray detection system and associated fast read-out electronics to image rapidly rotating multi-phase distributions in stirred chemical reactors and hydrodynamic machines. The detector arc is made of 320 small scintillation detector elements comprising LYSO scintillation crystals with an active area of 2 mm x 8 mm coupled to large area avalanche photodiodes. Pulse processing electronics is made of charge sensitive pre-amplifier, pulse shaper, gain adjustable amplifier, energy discrimination stage, and binary pulse counters. The counter stage is implemented in FPGA architecture. For fast measurements on rotating objects a fast read-out scheme with 6 bit counter depth and 40 µs read-out interval has been implemented. This enables acquisition of 500 full radiographic projections of objects rotating at 3000 rpm.
Keywords: Gamma ray tomography
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Contribution to proceedings
IEEE Sensors 2006, 22.-26.10.2006, Daegu, Korea
Proceedings of IEEE Sensors 2006 -
Invited lecture (Conferences)
IEEE Sensors 2006, 22.-26.10.2006, Daegu, Korea
Permalink: https://www.hzdr.de/publications/Publ-8877