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| projects:neutron [2026/05/25 14:33] – [Participants] zdenek | projects:neutron [2026/10/26 15:51] (current) – external edit 127.0.0.1 | ||
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| Future development will focus on extending FPGA firmware functionality, | Future development will focus on extending FPGA firmware functionality, | ||
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| **Spectral-imaging detection of neutrons in wide range with Timepix detectors**\\ | **Spectral-imaging detection of neutrons in wide range with Timepix detectors**\\ | ||
| In addition to X rays and charged particles, both light (electrons, muons) and heavy (protons, ions), the spectral-sensitive imaging detectors Timepix are used also to detect and register neutrons in wide range of energy (cold, thermal, slow, fast) and fluxes. For this purpose, various configurations of the Timepix ASIC chip-sensor assemblies can be suitably exploited including the use of neutron converter masks. A general limitation is the low detection efficiency overall (1-0.1%). Advantages include the intrinsic noiseless photon-counting response, high-spatial resolution, per-pixel spectrometry and fast timing (ns level), tracking-directional response of Timepix resulting in very high discrimination against background including electrons and gamma rays. Enhanced resolving power of particle-type discrimination in complex and mixed-radiation fields is provided from high-resolution processing of the pixelated tracks and detector response lookup tables derived from extensive experimental calibrations performed at accelerator particle beams and well-defined radiation sources. An overview will be given of the imaging and spectral-tracking techniques developed with Timepix, Timepix2 and Timepix3 chips bump-bonded with different semiconductor sensors (Si, SiC, GaAs, CdTe) including thermal and fast neutron converter masks. Results will be shown from experimental data acquired in various radiation fields including well-defined/ | In addition to X rays and charged particles, both light (electrons, muons) and heavy (protons, ions), the spectral-sensitive imaging detectors Timepix are used also to detect and register neutrons in wide range of energy (cold, thermal, slow, fast) and fluxes. For this purpose, various configurations of the Timepix ASIC chip-sensor assemblies can be suitably exploited including the use of neutron converter masks. A general limitation is the low detection efficiency overall (1-0.1%). Advantages include the intrinsic noiseless photon-counting response, high-spatial resolution, per-pixel spectrometry and fast timing (ns level), tracking-directional response of Timepix resulting in very high discrimination against background including electrons and gamma rays. Enhanced resolving power of particle-type discrimination in complex and mixed-radiation fields is provided from high-resolution processing of the pixelated tracks and detector response lookup tables derived from extensive experimental calibrations performed at accelerator particle beams and well-defined radiation sources. An overview will be given of the imaging and spectral-tracking techniques developed with Timepix, Timepix2 and Timepix3 chips bump-bonded with different semiconductor sensors (Si, SiC, GaAs, CdTe) including thermal and fast neutron converter masks. Results will be shown from experimental data acquired in various radiation fields including well-defined/ | ||
Last modified: 2026/10/26 15:51
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