Preliminary Design of O-mode Radiometer for ITER ECE Diagnostic
| العنوان: | Preliminary Design of O-mode Radiometer for ITER ECE Diagnostic |
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| المؤلفون: | Victor Udintsev, S. Danani, H.K.B. Pandya, Ravinder Kumar, Vinay Kumar, Max E Austin |
| المصدر: | Journal of Physics: Conference Series. 823:012034 |
| بيانات النشر: | IOP Publishing, 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Physics, History, Noise temperature, Radiometer, Frequency band, business.industry, Plasma parameters, Cyclotron, Bandwidth (signal processing), Temperature measurement, Computer Science Applications, Education, law.invention, Optics, law, Diplexer, business |
| الوصف: | The ITER Electron Cyclotron Emission (ECE) diagnostic system will provide information about plasma electron temperature and its fluctuations and other important plasma parameters which are required for plasma control and physics studies. The temperature profile measurement in the first harmonic ECE frequency range from 122-230 GHz (for BT = 5.3 T) is obtained by using an O-mode heterodyne radiometer. It is difficult to cover this wide frequency band by one radiometer, due to technological challenges in achieving wide bandwidth for the mixers. So, the present radiometer design has been optimized by considering four receivers, each of bandwidth ~ 30 GHz which can provide reliable temperature measurements. The splitting of frequency band into four receiver bands is efficiently achieved by considering a combination of quasi-optical and waveguide diplexers, optimizing power loss and cross-talk between the channels. The target spatial resolution of a/30, where "a" is the minor radius of the plasma cross section, is achieved by choosing Radiometer IF filter bandwidth of 1-2 GHz. Further, the radiometer is designed to achieve noise temperature < 10 eV. In this paper, the preliminary design and performance of O-mode Radiometer has been discussed. |
| تدمد: | 1742-6596 1742-6588 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::0327e18a47e4c1f8f8ddf90386376aae https://doi.org/10.1088/1742-6596/823/1/012034 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........0327e18a47e4c1f8f8ddf90386376aae |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 17426596 17426588 |
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