Design and Construction of Multichannel Analyzer Using ADC Sound Card for Gamma Spectroscopy

Ebrahimzadeh, Reza | 2020

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 54119 (46)
  4. University: Sharif University of Technology
  5. Department: Energy Engineering
  6. Advisor(s): Hosseini, Abulfazl
  7. Abstract:
  8. One of the applications of signal digitization is its use in nuclear spectroscopy and in particular gamma ray spectroscopy. Parameters such as pulse amplitude and formation, pulse shrinkage correction or reduction, and pulse sampling are performed by the amplifier circuit and MCA. Such algorithms have advantages such as real-time pulse height analysis, high flexibility and significant cost reduction.Therefore, in this project, an attempt has been made to design a pulse analyzer system using electronic circuits and a computer ADC sound card. Optimal system will detect, amplify and shape the detector input signal, reduce the effect of pulse accumulation, count the number of pulses, and so on.The circuits used in this study are passive CR-RC filters and active salon-K filters. A computer sound card is used to convert analog to digital signals and signal processing, which performs the tasks of a multi-channel analyzer well. The data resolution is 10 bits (depending on the available sound card), and the operating frequency of the system is in the range of 200 to 400 kHz. First, the pulse forming and amplification circuit was designed according to the parameters required by the system and the circuit conversion function was obtained. The designed circuit was tested in Orcad software. Finally, the PCB circuit was designed and the circuit was formed and reinforced. The developed spectroscopy system was compared with similar samples and the results were reported
  9. Keywords:
  10. Printed Circuit Board ; Analog to Digital Converter ; Pulse Shaping ; Pulse Height Distribution ; CR-RC Passive Filters ; Multichannel Analyzer ; Active Hall-Key Filter

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