Masaryk University, MIT, IAEA, TU Dresden, Research Centre Řež, Brno University of Technology, Czech Academy of Science, University of Defence, VF Nuclear

09:00 - Breakfast & coffe + wellcome milk
09:30 - Faculty of Informatics - invitation - prof. Barnat dean of Faculty of Informatics Masaryk University
9:45 - prof. Cechak - CTU
- assoc. prof. Kostal - CVR
- prof. Forget - MIT
- dr. Capote - IAEA
- dr. Viebach - TU Dresden - Upgrade of the TUD neXmess data acquisition system
- prof. Trunec - UNOB
- Alain Ferragut - R&D Bertin Instruments - nFacet, a portable directionnal gamma/neutron spectrometer
- Arne Wagner, Bertin GmbH - ERMS and Scintitracer SiPM probe
- dr. Jancar - Bertin VF Nucelar - PMT glass window sensitivity to gamma-rays(PMT)
- Culen (NGA-03/NGA-04)
- Granja - Spectral-imaging detection of neutrons in wide range with Timepix detectors
11:00 - posters - coffe break

12:00 - lunch
13:00 - panel discussion (Capote, Forget, Kostal)

• AmBe and it use in activation cross section validation
• What direction should further experiments take
• Simulation tools of the future

- Vecerak - Bertin VF Nucelar - Bertin Nuclear R&D: Collaboration with Academic Partners

18:00-23:30 - social event - Fleda

Tomáš Kulhánek - University of West Bohemia, Faculty of Electrical Engineering
Modular Digitization Platform for High-Speed Acquisition of Analog Signals in the Tens of GS/s Range
A modular high-speed digitization platform has been developed for precise acquisition of ultra-fast analog signals from modern particle detectors. The system is intended for applications in high-energy physics and time-of-flight measurements, where high temporal resolution and reliable operation at high event rates are required. The platform is based on state-of-the-art high-speed analog-to-digital converters and FPGA-based data processing. It supports sampling rates in the tens of GS/s range and enables further performance enhancement through interleaved sampling of synchronized modules, allowing scalable channel configurations and improved temporal resolution while maintaining system modularity. High-speed data transfer is implemented using modern serial interfaces, enabling integration into distributed data acquisition systems. The functionality of the system was verified on a prototype using both controlled sine-wave test signals and real signals from a fast photomultiplier tube. The results demonstrate reliable digitization of nanosecond-scale pulses and confirm the capability of the platform to capture high-rate events, including the observation of signal pile-up effects. Future development will focus on extending FPGA firmware functionality, implementing advanced on-board signal processing, and integrating additional analog front-end circuitry to further expand the applicability of the platform in high-precision timing and detector readout applications.

Doc. Ing. Carlos Granja, PhD. - VSB-Tech. Univ. Ostrava
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/reference calibrating fields (accelerator and radionuclide based) as well as mixed-field at proton and ion radiotherapy environments.

Tomáš Czakoj - Research Centre Řež
High-Energy Tail of the ²³⁵U Total Fission Gamma Spectrum
This work presents a systematic measurement of the high-energy tail (E > 10 MeV) of the ²³⁵U fission gamma spectrum using stilbene spectrometry at three reactors. The spectra show a consistent shape above 11 MeV, independent of reactor conditions, confirming the dominance of prompt fission gammas. Comparisons with simulations indicate good agreement with ENDF/B-VIII.0, while other libraries show significant discrepancies.

Martin Schulc - Research Centre Řež
Asteroid deflection possibilities
Asteroid impacts represent a serious threat to Earth, requiring reliable deflection strategies. Nuclear explosions are a potential solution, but accurate modeling of energy deposition in asteroid material depends on precise nuclear data. This work focuses on validating neutron cross sections of silicon and oxygen, key components of chondritic asteroids. Results show significant discrepancies between libraries, particularly in certain neutron energy regions.

• Neutron 2025
• Neutron 2024
• Neutron 2023

matej@muni.cz