DSP Algorithms for Fission Fragment and Prompt Fission Neutron Spectroscopy

Journal Article · Thu Oct 29 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3265358· OSTI ID:21325580

Zeynalova, O ^[1]; Zeynalov, Sh ^[2]; Hambsch, F -J; Oberstedt, S; Fabry, I ^[3]

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1. Moscow State Institute of Radioengineering, Electronics and Automation 78, Vernadski Avenue, 119454 Moscow (Russian Federation)
2. Joint Institute for Nuclear Research, Joliot Curie 6, Dubna, Moscow region (Russian Federation)
3. European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, 2440 Geel (Belgium)

Digital signal processing (DSP) algorithms are in high demand for modern nuclear fission investigation due to importance of increase the accuracy of fissile nuclear data for new generation of nuclear power stations. DSP algorithms for fission fragment (FF) and prompt fission neutron (PFN) spectroscopy are described in the present work. The twin Frisch-grid ionization chamber (GTIC) is used to measure the kinetic energy-, mass- and angular distributions of the FF in the {sup 252}Cf(SF) reaction. Along with the neutron time-of-flight (TOF) measurement the correlation between neutron emission and FF mass and energy is investigated. The TOF is measured between common cathode of the GTIC and the neutron detector (ND) pulses. Waveform digitizers (WFD) having 12 bit amplitude resolution and 100 MHz sampling frequency are used for the detector pulse sampling. DSP algorithms are developed as recursive procedures to perform the signal processing, similar to those available in various nuclear electronics modules, such as constant fraction discriminator (CFD), pulse shape discriminator (PSD), peak-sensitive analogue-to-digital converter (pADC) and pulse shaping amplifier (PSA). To measure the angle between FF and the cathode plane normal to the GTIC a new algorithm is developed having advantage over the traditional analogue pulse processing schemes. Algorithms are tested by comparing the numerical simulation of the data analysis of the {sup 252}Cf(SF) reaction with data available from literature.

• OSTI ID: 21325580
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1186; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ALGORITHMS
AMPLIFIERS
ANALOG-TO-DIGITAL CONVERTERS
ANGULAR DISTRIBUTION
CALIFORNIUM 252
COMPUTERIZED SIMULATION
CORRELATIONS
DATA ANALYSIS
DATA PROCESSING
FISSION FRAGMENTS
FISSION NEUTRONS
IONIZATION CHAMBERS
NEUTRON DETECTORS
NEUTRON EMISSION
PULSES
RESOLUTION
SPONTANEOUS FISSION
TIME-OF-FLIGHT METHOD
WAVE PROPAGATION