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Title: DSP Algorithms for Fission Fragment and Prompt Fission Neutron Spectroscopy

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 aremore » tested by comparing the numerical simulation of the data analysis of the {sup 252}Cf(SF) reaction with data available from literature.« less
Authors:
 [1] ;  [2] ;  [3] ;  [4] ; ; ;  [5]
  1. Moscow State Institute of Radioengineering, Electronics and Automation 78, Vernadski Avenue, 119454 Moscow (Russian Federation)
  2. (Russian Federation)
  3. Joint Institute for Nuclear Research, Joliot Curie 6, Dubna, Moscow region (Russian Federation)
  4. (Belgium)
  5. European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, 2440 Geel (Belgium)
Publication Date:
OSTI Identifier:
21325580
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1186; Journal Issue: 1; Conference: 1. international conference on applications of mathematics in technical and natural sciences, Sozopol (Bulgaria), 22-27 Jun 2009; Other Information: DOI: 10.1063/1.3265358; (c) 2009 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
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