为 SPARC 中子照相机设计研究实时钻石光谱仪的电子器件和数据采集。

IF 1.3 4区 工程技术 Q3 INSTRUMENTS & INSTRUMENTATION
M Petruzzo, A Celora, G Croci, E Gallo, G Gorini, G Grosso, M Nocente, M Parisi, O Putignano, P Raj, D Rigamonti, M Rebai, M Reinke, F Scioscioli, M Tardocchi, L Tedoldi
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引用次数: 0

摘要

本文介绍了一种紧凑型 2 × 2 钻石矩阵的设计,该矩阵具有独立和冗余像素,专为 SPARC 托卡马克的光谱中子照相机而优化。这种矩阵克服了单个金刚石传感器尺寸对动态范围造成的限制,同时保持了能谱分析能力,标志着托卡马克中子诊断技术的重大进步。基于 InGaP 技术晶体管射频放大器的电荷前置放大器已经研制成功,该放大器可提供高达 2 GHz 的带宽,并具有很强的抗辐射能力。第一个单通道设备已经过测试,证明可以提供 20-25 毫微秒的快速信号显影时间,这是减轻堆积效应的必要条件,同时还能提供精确的能量测量。由于金刚石/金属界面的电荷捕获可能导致金刚石传感器受到极化效应的影响,因此周期性的偏置反转可以保证最佳性能。为此,我们开发了一种可逆高压电源。基于可编程门阵列的数据采集设备和实时处理算法的不断发展,进一步增强了中子照相机的功能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Design studies on electronics and data acquisition of a real time diamond spectrometer for the SPARC neutron camera.

The design of a compact 2 × 2 diamond matrix with independent and redundant pixels optimized for the spectrometric neutron camera of the SPARC tokamak is presented in this article. Such a matrix overcomes the constraints in dynamic range posed by the size of a single diamond sensor while keeping the ability to perform energy spectral analysis, marking a significant advancement in tokamak neutron diagnostics. A charge pre-amplifier based on radio frequency amplifiers based on InGaP technology transistors, offering up to 2 GHz bandwidth with high robustness against radiation, has been developed. A first single-channel device has been tested and proven to provide a fast signal development time of 20-25 ns, necessary to mitigate pileup effects while offering precise energy measurements. As the diamond sensors may suffer from polarization effects due to the trapping of charges at the diamond/metal interface, a periodical bias inversion can guarantee optimal performance. To facilitate that, a reversible high voltage power supply has been developed. The ongoing development of data acquisition equipment and real-time processing algorithms based on programmable gate arrays further enhances the neutron camera's capabilities.

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来源期刊
Review of Scientific Instruments
Review of Scientific Instruments 工程技术-物理:应用
CiteScore
3.00
自引率
12.50%
发文量
758
审稿时长
2.6 months
期刊介绍: Review of Scientific Instruments, is committed to the publication of advances in scientific instruments, apparatuses, and techniques. RSI seeks to meet the needs of engineers and scientists in physics, chemistry, and the life sciences.
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