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Current seminar
- středa (Wednesday) 17. 4. 2024 11:00
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Zdeněk Matěj (Katedra počítačových systémů a komunikací, Fakulta informatiky):
Digital two-parametric spectrometric system for characterization of mixed
neutron-gamma field in experimental devices
Abstrakt:
This presentation discusses a novel digital spectrometric system and its application in measuring neutron and gamma mixed fields across various experimental reactors (LR-0, LVR-15, VR-1), cyclotrons, and neutron generators. Traditionally, these measurements employed an analog system using output signals from a scintillation stilbene detector. Despite its widespread use, the analog system had significant drawbacks including its size, heavy weight, and a limitation of processing approximately 1000 impulses per second. This rate limitation extended experimental durations to tens of hours, particularly problematic in high gamma radiation environments, such as near activated fuel, where conducting experiments became nearly untenable.The newly developed digital spectrometric system addresses these issues by processing detector outputs at a rate at least ten times higher, thereby drastically reducing experiment times and enhancing measurement feasibility in high radiation backgrounds. Key to this system is high-speed digitizers offering a resolution of 12 bits and a sampling rate of 500 MS/s (1 GS/s). Data digitization is followed by FPGA processing, allowing for both immediate online analysis using rapid dual-parameter evaluation algorithms and detailed offline processing utilizing charge comparison methods.
See also seminars planned for the current semester and previous seminars.
News
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Microscopy
is our new study program, currently in Czech. The English will come later.
- Spring 2024: Seminars will be in lecture hall F1.
- 19. 2. 2024: Start of the spring semester!, see the education page for available texts (in Czech).
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QM4ST
(Quantum Materials for Applications in Sustainable Technologies)
is a new project we run together with colaborating groups at ZČU Plzeň, UK and
VUT/CEITEC. Project focuses on materials with new properties which can be
described by quantum physics.
- Autumn 2023: Seminars will be in lecture hall F1.
- 18. 9. 2023: Start of the spring semester!, see the education page for available texts (in Czech).
- 23. 5. 2023: Spring meeting of the institute, see the program (in Czech).
- 2023: Ordering of liquid nitrogen uses online formulaire.
- former news...
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