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The Power Supply System for the J-TEXT poloidal field

Plasma Science and Technology 2009年第1期11卷 100-103页

作者：张明庄革于克训邱胜顺潘垣 Key Lab of Fusion and Advanced Electromagnetic Technology of Ministry of Education College of Electrical and Electronic EngineeringHuazhong University of Science and Technology

Joint-TEXT （J-TEXT） is a medium-sized tokamak constructed at Huazhong University of Science and Technology. At present, the poloidal field power supply consists of three subsystem sets, namely Ohmic heating field power supply, vertical field power supply, and horizontal field power supply. The structure and function of the poloidal field （PF） power supply as well as the updated control system of the power supply is described. The new scheme uses the realtime feedback control method for the poloidal field power supply. The experimental results show that the poloidal field energized by poloidal field power supply meets the J-TEXT operational requirement perfectly.

关键词： J-TEXT poloidal field power supply control

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Upgrading of the Magnetic Confinement Plasma Device KT-5E

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Plasma Science and Technology 2012年第2期14卷 94-96页

作者：何迎花余羿闻一之刘万东李定俞昌旋谢锦林李弘兰涛王昊宇 CAS Key Laboratory of Plasma Physics School of ScienceUniversity of Science and Technology of China

In this article we present ideas of providing appropriate poloidal magnetic field for helimaks to help to generate toroidal magnetic plasma torus. Placing a conductive ring in the center of the cross-section to induce a suitable current, we change the helical magnetic field lines in the helimak discharge into magnetic surface. In this kind of discharge, the plasma density is greatly increased, and the corresponding density fluctuation is significantly decreased, showing a better confinement by magnetic shear. It allows more flexible and efficient experimental investigations on the toroidal magnetic confinement plasmas to be carried on in this kind of device.

关键词： magnetic torus helimak poloidal field shear

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维普期刊数据库

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Current Sharing Temperature Test and Simulation with GANDALF Code for ITER PF2 Conductor Sample

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Plasma Science and Technology 2011年第5期13卷 627-630页

作者：李少磊武玉刘勃翁佩德 Institute of Plasma Physics Chinese Academy of Sciences

Cable-in-conduit conductor （CICC） conductor sample of the PF2 coil for ITER was tested in the SULTAN facility. According to the test results, the CICC conductor sample exhibited a stable performance regarding the current sharing temperature. Under the typical operational conditions of a current of 45 kA, a magnetic field of 4 T and a temperature of 5 K for PF2, the test result for the conductor current sharing temperature is 6.71 K, with a temperature margin of 1.71 K. For a comparison thermal-hydraulic analysis of the PF2 conductor was carried out using GANDALF code in a 1-D model, and the result is consistent with the test one.

关键词： current sharing temperature poloidal field cable-in-conduit conductor NbTistrand GANDALF

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Terrestrial ground temperature variations in relation to solar magnetic variability,including the present Schwabe cycle

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Natural Science 2013年第10期5卷 1112-1120页

作者： C.de Jager H.Nieuwenhuijzen Royal Netherlands Institute for Sea Research Formerly Astronomical Institute and SRON Laboratory for Space ResearchSorbon-nelaan 2UtrechtThe Netherlands SRON Laboratory for Space Research Sorbonnelaan 2UtrechtThe Netherlands

We study the influence of solar activity on climate by investigating the relation between the long-term components of the total magnetic fluxes of both the equatorial and polar fields of the sun and the average terrestrial ground temperature. This is done for the period 1610 (beginning of systematic sunspot observations) till present with an extrapolation to 2015. It is found that from 1610 till about the first half of the 20th century the variation of the long-term average terrestrial ground temperatures is chiefly due to the variation of solar activity, with seemingly random, non-solar residuals. Around 2007, after the Grand Maximum of the 20th century, solar activity, after having gone through a remarkable transition period (~2005 to ~2010), entered into another Grand Episode. That Episode started with the present solar cycle, in shape comparable to the equally weak Schwabe cycle #14. The transition period, in combination with the present low Schwabe cycle causes that the solar contribution to the total terrestrial temperature variation is small during the on-going decade. It results in a slowing down of the rise of temperature after ~2005.

关键词： Solar Activity Climate Dynamo Toroidal field poloidal field

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