The 5.8 T Cryogen-Free Gyrotron Superconducting Magnet System on HL-2A

Xia, Donghui; Huang, M.; Zhou, J.; Zheng, Tieliu; Rao, Jun; Zhuang, G.

doi:10.1088/1009-0630/16/4/20

Cited by 10 publications

(3 citation statements)

References 10 publications

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“…The magnet alignment is also very crucial and needs to be implemented precisely [10]. Without good alignment, there is a great chance that the gyrotron couldn't reach its best working condition, especially when a high-power output is required.…”

Section: Magnet Alignmentmentioning

confidence: 99%

The development of 1 MW ECRH system on J-TEXT

Chen

Xia²,

Zhang³

et al. 2023

EPJ Web Conf.

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A 1 MW electron cyclotron resonance heating system has been designed and developed for J-TEXT tokamak not only to enhance the total heating power but also to provide another possible way to control the plasma parameters. The system is composed of two gyrotrons, both with an output power of 500 kW electron cyclotron wave power. The development progress of the system is elaborated and discussed. The commissioning tests for the gyrotrons were implemented, and each gyrotron realized its standard output successfully. With the assistance of this system, a variety of experiments have been carried out on J-TEXT, mainly related to plasma heating, plasma disruption, plasma start-up, current drive and so on.

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Section: Magnet Alignmentmentioning

confidence: 99%

The development of 1 MW ECRH system on J-TEXT

Chen

Xia²,

Zhang³

et al. 2023

EPJ Web Conf.

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“…Electron cyclotron resonance heating (ECRH) is an important auxiliary heating method for tokamak plasma [1][2][3][4][5][6]. It is beneficial in controlling the magneto hydro dynamic instability and forming a reversed shear configuration [7]. Therefore, the ECRH system is often used as a powerful means to expand the operating range of the tokamak.…”

Section: Introductionmentioning

confidence: 99%

The anode power supply for the ECRH system on the J-TEXT tokamak

夏冬辉

Xia

Team

2017

Plasma Sci. Technol.

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The electron cyclotron resonance heating (ECRH) system with a 60 GHz/200 kW/0.5 s gyrotron donated by the Culham Science Center is being developed on the J-TEXT tokamak for plasma heating, current drive and MHD studies. Simultaneously, an anode power supply (APS) has been rebuilt and tested for the output power control of the gyrotron, of which the input voltage is derived from an 80 kV negative cathode power supply. The control strategy by controlling the grid voltage of the tetrode TH5186 is applied to obtain an accurate anode climbing voltage, of which the output voltage can be obtained from 0-30 kV with respect to the cathode power supply. The characteristics of the APS, including control, protection, modulation, and output waveform, were tested with a 100 kV/60 A negative cathode power supply, a dummy load and the ECRH control system. The results indicate that the APS can meet the requirements of the ECRH system on J-TEXT.

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“…Normally, a SCM should be equipped to provide a desired magnetic field profile for the gyrotron operation [9]. Before matching a SCM with a gyrotron, the alignment status, magnetic field profile and stray field of the SCM should be tested for high efficient operation of the gyrotron and also for safety of other equipments especially electronic equipments around the SCM.…”

Section: Introductionmentioning

confidence: 99%

Commissioning of a 60 GHz Gyrotron Superconducting Magnet System on J-TEXT Tokamak

et al. 2015

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As an attractive auxiliary heating method for J-TEXT, ECRH systems composed of six 200 kW/60 GHz subsystems are under development. The main components of these systems are donated by the Culham Science Center. To rebuild these systems on the site of J-TEXT, a superconducting magnet (SCM) system for the 60 GHz gyrotron has been firstly tested. The SCM consists of two cavity coils, a gun coil and two pairs of trim coils, where the magnetic field is mainly generated by the cavity coils. To confirm the condition of this SCM, firstly vacuum leak detection was done and the resistance variation of the whole coils during cooling was monitored. Then the transverse and axis fields of the SCM were measured with a designed three-dimensional magnetic field measurement device; the measured axis field was compared with the results calculated by the finite element method. Finally, considering the safety of persons and electrical equipments when the SCM is charged, the stray field was detected. The test results indicate that the condition of this SCM is good and can be used for the 60 GHz gyrotron.

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The 5.8 T Cryogen-Free Gyrotron Superconducting Magnet System on HL-2A

Cited by 10 publications

References 10 publications

The development of 1 MW ECRH system on J-TEXT

The development of 1 MW ECRH system on J-TEXT

The anode power supply for the ECRH system on the J-TEXT tokamak

Commissioning of a 60 GHz Gyrotron Superconducting Magnet System on J-TEXT Tokamak

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