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用于高温和中子辐射环境的陶瓷-铬霍尔传感器。

Ceramic-Chromium Hall Sensors for Environments with High Temperatures and Neutron Radiation.

作者信息

Entler Slavomir, Soban Zbynek, Duran Ivan, Kovarik Karel, Vyborny Karel, Sebek Josef, Tazlaru Stana, Strelecek Jan, Sladek Petr

机构信息

Institute of Plasma Physics of CAS, Za Slovankou 3, 182 00 Prague, Czech Republic.

Institute of Physics of CAS, Cukrovarnicka 10/112, 162 00 Prague 6, Czech Republic.

出版信息

Sensors (Basel). 2021 Jan 21;21(3):721. doi: 10.3390/s21030721.

DOI:10.3390/s21030721
PMID:33494501
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7865485/
Abstract

Ceramic-chromium Hall sensors represent a temperature and radiation resistant alternative to Hall sensors based on semiconductors. Demand for these sensors is presently motivated by the ITER and DEMO nuclear fusion projects. The developed ceramic-chromium Hall sensors were tested up to a temperature of 550 °C and a magnetic field of 14 T. The magnitude of the sensitivity of the tested sensor was 6.2 mV/A/T at 20 °C and 4.6 mV/A/T at 500 °C. The sensitivity was observed to be weakly dependent on a temperature above 240 °C with an average temperature coefficient of 0.014%/°C and independent of the magnetic field with a relative average deviation below the measurement accuracy of 0.086%. A simulation of a neutron-induced transmutation was performed to assess changes in the composition of the chromium. After 5.2 operational years of the DEMO fusion reactor, the transmuted fraction of the chromium sensitive layer was found to be 0.27% at the most exposed sensor location behind the divertor cassette with a neutron fluence of 6.08 × 10 n/m. The ceramic-chromium Hall sensors show the potential to be suitable magnetic sensors for environments with high temperatures and strong neutron radiation.

摘要

陶瓷 - 铬霍尔传感器是基于半导体的霍尔传感器的一种耐高温和抗辐射的替代品。目前，国际热核聚变实验堆（ITER）和演示核聚变项目推动了对这些传感器的需求。所开发的陶瓷 - 铬霍尔传感器在高达550°C的温度和14T的磁场下进行了测试。测试传感器在20°C时的灵敏度大小为6.2mV/A/T，在500°C时为4.6mV/A/T。观察到灵敏度在240°C以上对温度的依赖性较弱，平均温度系数为0.014%/°C，并且与磁场无关，相对平均偏差低于测量精度的0.086%。进行了中子诱发嬗变的模拟，以评估铬成分的变化。在演示核聚变反应堆运行5.2年后，在偏滤器盒后面最暴露的传感器位置，铬敏感层的嬗变分数在中子注量为6.08×10 n/m时最高为0.27%。陶瓷 - 铬霍尔传感器显示出有潜力成为适用于高温和强中子辐射环境的磁传感器。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/8f4d05cd469b/sensors-21-00721-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/43264359e150/sensors-21-00721-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/c28b2f67f28a/sensors-21-00721-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/cd486314fea7/sensors-21-00721-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/6c0e54adb228/sensors-21-00721-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/7cc664a6c157/sensors-21-00721-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/b0702d6ce4d1/sensors-21-00721-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/90b6ba8a962b/sensors-21-00721-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/1e0f89c19eb6/sensors-21-00721-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/ad893e2b0090/sensors-21-00721-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/8f4d05cd469b/sensors-21-00721-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/43264359e150/sensors-21-00721-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/c28b2f67f28a/sensors-21-00721-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/cd486314fea7/sensors-21-00721-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/6c0e54adb228/sensors-21-00721-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/7cc664a6c157/sensors-21-00721-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/b0702d6ce4d1/sensors-21-00721-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/90b6ba8a962b/sensors-21-00721-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/1e0f89c19eb6/sensors-21-00721-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/ad893e2b0090/sensors-21-00721-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/e103/7865485/8f4d05cd469b/sensors-21-00721-g010.jpg

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本文引用的文献

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WIEN2k: An APW+lo program for calculating the properties of solids.WIEN2k：一个用于计算固体性质的全势缀加平面波加局域轨道（APW+lo）程序。
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High magnetic field test of the ITER outer vessel steady-state magnetic field Hall sensors at ITER relevant temperature.ITER外真空容器稳态磁场霍尔传感器在ITER相关温度下的高磁场测试。
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