Design and implementation of plasma electron density measurements based on FPGA with all-phase FFT for tokamak devices
文献类型：期刊论文
| 作者 | Shu, Shuangbao2; Lai, Jin2; Chen, Zhiqiang2; Wang, Yong1 ; Zhang, Yuzhong2; Tao, Xiaojie2; Lang, Xianli2; Chen, JingJing2
|
| 刊名 | REVIEW OF SCIENTIFIC INSTRUMENTS
 |
| 出版日期 | 2021-09-01 |
| 卷号 | 92 |
| ISSN号 | 0034-6748 |
| DOI | 10.1063/5.0060372 |
| 通讯作者 | Zhang, Yuzhong() |
| 英文摘要 | Plasma electron density is one of the most fundamental parameters when studying tokamak plasma physics, which is widely used in plasma control systems and plasma physics analyses. A hydrogen cyanide laser interferometer is generally applied to measure the plasma electron density in many tokamak devices. Therein, the plasma electron density is calculated by measuring the phase difference between the reference signal and the detector signal. This work provides a new way to realize real-time measurements of the plasma electron density with a phase comparator and processing system based on a field-programmable gate array chip. The system integrates a signal processing module, an all-phase fast Fourier transform (ap-FFT) module realized via matrix operations and phase comparisons, and a network communication module all in one board. This work concludes that the ap-FFT is robust and accurate for phase calculations compared with a windowing FFT. A data-reuse method and a phase shift method are proposed to improve the time resolution and phase range. The phase error is less than 0.1?degrees and the time resolution is 0.025 ms, which is better than hardware methods and traditional software methods. This system is highly flexible with reduced design costs to meet the requirements of a tokamak, which can provide a valuable reference for other tokamak and phase difference comparisons.& nbsp;Published under an exclusive license by AIP Publishing. |
| WOS关键词 | REAL-TIME |
| 资助项目 | Fundamental Research Funds for the Central Universities[JZ2019HGTB0082] ; National Magnetic Confinement Fusion Science Program of China[2015GB102004] |
| WOS研究方向 | Instruments & Instrumentation ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000724254200001 |
| 出版者 | AIP Publishing |
| 资助机构 | Fundamental Research Funds for the Central Universities ; National Magnetic Confinement Fusion Science Program of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/126468]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Zhang, Yuzhong |
| 作者单位 | 1.Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China 2.Hefei Univ Technol, Sch Instrument Sci & Optoelect Engn, Anhui Prov Key Lab Measuring Theory & Precis Inst, Hefei 230009, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shu, Shuangbao,Lai, Jin,Chen, Zhiqiang,et al. Design and implementation of plasma electron density measurements based on FPGA with all-phase FFT for tokamak devices[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,2021,92. |
| APA | Shu, Shuangbao.,Lai, Jin.,Chen, Zhiqiang.,Wang, Yong.,Zhang, Yuzhong.,...&Chen, JingJing.(2021).Design and implementation of plasma electron density measurements based on FPGA with all-phase FFT for tokamak devices.REVIEW OF SCIENTIFIC INSTRUMENTS,92. |
| MLA | Shu, Shuangbao,et al."Design and implementation of plasma electron density measurements based on FPGA with all-phase FFT for tokamak devices".REVIEW OF SCIENTIFIC INSTRUMENTS 92(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。