The Basis for Design and Manufacture of a DSP-Based Coincidence Spectrometer
- 1 Nuclear Research Institute, Dalat, Vietnam
- 2 Nuclear Research Institute, Dalat, Vietnam; 2Nuclear Training Center, Hanoi, Vietnam.
- 3 Nuclear Research Institute, Dalat, Vietnam; 2Nuclear Training Center, Hanoi, Vietnam
- 4 Nuclear Research Institute, Dalat, Vietnam
- 5 Nuclear Research Institute, Dalat, Vietnam
- 6 Nuclear Training Center, Hanoi, Vietnam
Abstract
The coincidence technique and the coincidence spectroscopy have been developed and applied for over 40 years. Most of popular coincidence measurement systems were based on analog electronics techniques such as time to amplitude conversion (TAC) or logic selecting coincidence unit. The above-mentioned systems are relatively cumbersome and complicated to use. With the strong growth of digital electronics techniques and computational science, the coincidence measurement systems will be constructed simpler but more efficient with the sake of application. This article presents the design principle and signal processing of a simple two-channel coincidence system by a technique of digital signal processing (DSP) using Field Programmable Gate Arrays (FPGA) devices at Nuclear Research Institute (NRI), Dalat.
- V. T. Jordanov and G. F. Knoll, “Digital Synthesis of Pulse Shape in Real Time for High Resolution Radiation Spectroscopy,” Nuclear Instruments and Methods in Physics Research Section A, Vol. 345, No. 2, 1994, pp. 337-345.
- M. Lauer, “Digital Signal Processing for Segmented HPGe Detectors Preprocessing Algorithms and Pulse Shape Analysis,” Doctor of Science Thesis, University of Heidelberg, Heidelberg, 2004.
- W. R. Leo, “Techniques for Nuclear and Particle Physics Experiments,” Springer-Verlag, Berlin, Heidelberg, 1987.
- Valentin T. Jordanov and Glen F. Knoll, “Digital Techniques for Real-Time Pulse Shaping in Radiation Measurements,” Nuclear Instruments and Methods in Physics Research Section A, Vol. 353, No. 1-3, 1994, pp. 261-264.
- http://www.fastcomtec.com/products/multiparameter-multichannel-analyzers/mpa-3rtc.html
- A. Kimura, Y. Toh, M. Koizumi, A. Osa, M. Oshima, J. Goto and M. Igashira, “Development of a Data Acquisition System for a Multiple Gamma-Ray Detection Method,” AIP Conference Proceedings, Vol. 769, Melville, New York, 2005.
- A. M. Hoogenboom, “A New Method in Gamma-Ray Spectroscopy: A Two Crystal Scintillation Spectrometer with Improved Resolution,” Nuclear Instruments, Vol. 3, No. 2, 1958, pp. 57-68. doi:10.1016/0369-643X(58)90092-6
- A. Pullia, “Quasi-Optimum Gamma and X-Ray Spectroscopy Based on Real-Time Digital Techniques,” Nuclear Instruments and Methods in Physics Research A, Vol. 439, No. 2-3, 2000, pp. 378-384. doi:10.1016/S0168-9002(99)00897-9