Millimeter Wave Power Monitoring in EAST ECRH System

Xu, Wenhai; Xu, Handong; Liu, Fukun; Tang, Yunying; Wu, Zege; Wang, Xiaojie; Wang, Jian; Feng, Jingcheng

doi:10.1109/access.2016.2611618

Cited by 13 publications

(5 citation statements)

References 7 publications

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“…The RF power measurement of the gyrotron [2] is one of the key issues in the operation of electron cyclotron resonance heating system. There are two methods for measuring gyrotron power, namely the calorimetric method [3] and the detector-based method for real-time power monitoring [4]. For the detector-based method, the power monitor bends are used to leak out a little incident RF power and reflected RF power to the detectors, which will transform the wave power into voltage signal according to the sensitivity curve of the detector.…”

Section: Introductionmentioning

confidence: 99%

Millimeter-wave detector for gyrotron power monitoring

Liu

et al. 2020

AIP Conference Proceedings

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The real-time power monitoring of gyrotron is one of the key issues in the operation of electron cyclotron resonance heating system. The detector can be used for real-time power monitoring. We analyzed the principle of diode detection and designed a D-band wideband detector based on Schottky diode in this paper. The detector includes a waveguide-to-microstrip transition, a matching circuit, a diode, and a low pass filter. A novel waveguide-to-microstrip transition was developed based on probe coupling. A wideband lossy matching circuit was developed based on tapered-line and series matching resistor. The simulation results show that when the input power is -30dBm at 140 GHz, the detection sensitivity is about 1600V/W.

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Section: Introductionmentioning

confidence: 99%

Millimeter-wave detector for gyrotron power monitoring

Liu

et al. 2020

AIP Conference Proceedings

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“…Except the dummy load and the collector, we measured the power of the other cooling circuits, such as Main Window, MOU etc. [15] The test results for #1 Gycom gyroton are shown in Table 3, and the probable calorimetric measurement error, water flow, and pressure drop for each cooling circuit are shown in Table 4. The power consumption is the sum of the cathode power and the anode power which are the product of voltage and current.…”

Section: Test Resultsmentioning

confidence: 99%

“…With the exception of the dummy load and the collector, we measured the power of the other cooling circuits, such as the main window, MOU, etc [15]. The test results for the #1 Gycom gyroton are shown in table 3, and the probable calorimetric measurement error, water flow, and pressure drop for each cooling circuit are shown in table 4.…”

Section: Test Resultsmentioning

confidence: 99%

Calorimetric power measurements in the EAST ECRH system

Liu

et al. 2017

Plasma Sci. Technol.

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In this paper, the calorimetric power measurement method for electron cyclotron resonance heating system on EAST are presented. This method requires measurement of the water flow through the cooling circuits and the input and output water temperatures in each cooling circuit. Usually, the inlet water temperature is controlled to be stable to get more accurate results. The influence of the inlet water temperature change on the measurement results is analyzed for the first time in this paper. A novel temperature calibration method is proposed also. This kind of calibration method is accurate and effective, and can be easily implemented.

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“…The Experimental Advanced Superconducting Tokamak (EAST), an all-superconducting non-circular cross-section tokamak nuclear fusion experimental device built by the Institute of Plasma Physics, Chinese Academy of Sciences, is the world's first fully superconducting non-circular cross-section Tokamak nuclear fusion experiment device successfully operated [1] . To achieve fusion ignition, the plasma needs to be heated to a sufficient temperature, and ohmic heating is the main heating method [2] . In addition, various other auxiliary heating means are required, such as electron-cyclotron resonance heating (ECRH) is one of them.…”

Section: Introductionmentioning

confidence: 99%

Design of real-time power control system for gyrotron

Yin

Xu²,

Xu³

et al. 2022

6th International Workshop on Advanced Algorithms and Control Engineering (IWAACE 2022)

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For the purpose of meeting the further requirements of East operation experiment for gyrotron power, a set of gyrotron power real-time control system is designed. Through mode switching, the system can realize two real-time control modes of gyrotron power: ECRH local control and EAST center console remote control. The system uses NI CompactRIO and its components as the lower computer hardware platform and LabVIEW as the programming language. The test results show that the control system performances stably and accurately, meeting the requirements of EAST operation experiment for real-time control of gyrotron power. It has important application value for the further research of EAST operation experiment and popularization value for the development of similar control systems.

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Millimeter Wave Power Monitoring in EAST ECRH System

Cited by 13 publications

References 7 publications

Millimeter-wave detector for gyrotron power monitoring

Millimeter-wave detector for gyrotron power monitoring

Calorimetric power measurements in the EAST ECRH system

Design of real-time power control system for gyrotron

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