Full digital dual channel coincidence Doppler broadening system based on FPGA
Aiming at the requirement of nuclear radiation spectrum and positron annihilation coincidence Doppler broadening spectrum measurement, an all digital dual channel coincidence Doppler broadening system based on FPGA is designed. In this system, the analog signal collected by the high purity germanium...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
National Computer System Engineering Research Institute of China
2020-03-01
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| Series: | Dianzi Jishu Yingyong |
| Subjects: | |
| Online Access: | http://www.chinaaet.com/article/3000116898 |
| _version_ | 1818528717846085632 |
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| author | Qian Qiufei Wang Zhu Huang Qijun Zou Fenghua Liao Yuan Zhang Mengxin |
| author_facet | Qian Qiufei Wang Zhu Huang Qijun Zou Fenghua Liao Yuan Zhang Mengxin |
| author_sort | Qian Qiufei |
| collection | DOAJ |
| description | Aiming at the requirement of nuclear radiation spectrum and positron annihilation coincidence Doppler broadening spectrum measurement, an all digital dual channel coincidence Doppler broadening system based on FPGA is designed. In this system, the analog signal collected by the high purity germanium detector is converted into digital signal by the front-end of 16 bit analog-to-digital conversion chip AD9269-80. The digital signal enters the FPGA chip at the back-end of the system for digital processing. FPGA realizes the processing of nuclear pulse signal through moving average window, ping-pong operation, custom IP core, etc., including waveform noise reduction, trapezoid filtering, baseline recovery, stack recognition, threshold judgment, data cache, etc., so as to obtain the amplitude information and time information of nuclear pulse. Then, the communication between the network port module and the upper computer is carried out, and the amplitude and time information are transmitted by UDP protocol to obtain the energy spectrum of the nuclear signal. The system uses two channels to measure the broadening spectrum of positron coincidence Doppler and obtains two-dimensional coincidence spectrum. |
| first_indexed | 2024-12-11T06:53:38Z |
| format | Article |
| id | doaj.art-bcbb1438a84942c29cc24be3c68e62fb |
| institution | Directory Open Access Journal |
| issn | 0258-7998 |
| language | zho |
| last_indexed | 2024-12-11T06:53:38Z |
| publishDate | 2020-03-01 |
| publisher | National Computer System Engineering Research Institute of China |
| record_format | Article |
| series | Dianzi Jishu Yingyong |
| spelling | doaj.art-bcbb1438a84942c29cc24be3c68e62fb2022-12-22T01:16:50ZzhoNational Computer System Engineering Research Institute of ChinaDianzi Jishu Yingyong0258-79982020-03-014639710010.16157/j.issn.0258-7998.1913393000116898Full digital dual channel coincidence Doppler broadening system based on FPGAQian Qiufei0Wang Zhu1Huang Qijun2Zou Fenghua3Liao Yuan4Zhang Mengxin5School of Physics and Technology，Wuhan University，Wuhan 430072，ChinaSchool of Physics and Technology，Wuhan University，Wuhan 430072，ChinaSchool of Physics and Technology，Wuhan University，Wuhan 430072，ChinaSchool of Physics and Technology，Wuhan University，Wuhan 430072，ChinaSchool of Physics and Technology，Wuhan University，Wuhan 430072，ChinaSchool of Physics and Technology，Wuhan University，Wuhan 430072，ChinaAiming at the requirement of nuclear radiation spectrum and positron annihilation coincidence Doppler broadening spectrum measurement, an all digital dual channel coincidence Doppler broadening system based on FPGA is designed. In this system, the analog signal collected by the high purity germanium detector is converted into digital signal by the front-end of 16 bit analog-to-digital conversion chip AD9269-80. The digital signal enters the FPGA chip at the back-end of the system for digital processing. FPGA realizes the processing of nuclear pulse signal through moving average window, ping-pong operation, custom IP core, etc., including waveform noise reduction, trapezoid filtering, baseline recovery, stack recognition, threshold judgment, data cache, etc., so as to obtain the amplitude information and time information of nuclear pulse. Then, the communication between the network port module and the upper computer is carried out, and the amplitude and time information are transmitted by UDP protocol to obtain the energy spectrum of the nuclear signal. The system uses two channels to measure the broadening spectrum of positron coincidence Doppler and obtains two-dimensional coincidence spectrum.http://www.chinaaet.com/article/3000116898positron annihilation radiation doppler broadeningfpgadual channeltrapezoid filtering |
| spellingShingle | Qian Qiufei Wang Zhu Huang Qijun Zou Fenghua Liao Yuan Zhang Mengxin Full digital dual channel coincidence Doppler broadening system based on FPGA Dianzi Jishu Yingyong positron annihilation radiation doppler broadening fpga dual channel trapezoid filtering |
| title | Full digital dual channel coincidence Doppler broadening system based on FPGA |
| title_full | Full digital dual channel coincidence Doppler broadening system based on FPGA |
| title_fullStr | Full digital dual channel coincidence Doppler broadening system based on FPGA |
| title_full_unstemmed | Full digital dual channel coincidence Doppler broadening system based on FPGA |
| title_short | Full digital dual channel coincidence Doppler broadening system based on FPGA |
| title_sort | full digital dual channel coincidence doppler broadening system based on fpga |
| topic | positron annihilation radiation doppler broadening fpga dual channel trapezoid filtering |
| url | http://www.chinaaet.com/article/3000116898 |
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