Analysis of US Preprototype Joint dc Performance

机译：分析美国预塑性联合直流性能

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Evaluation of the US-ITER preprototype joint sample has recently conclued at the MIT Pulse Test Facility. Four approaches were used to evaluate the sample's zero field dc performance: voltage tap measurement, Hall probe and pick-up coil measurement of current density distribution, detailed electromagnetic modeling of the joint's dc resistance and helium flow calorimetry. Because of the joint's complex structure and the use of highly resistive materials, an exact value for the joint's resistance cannot be directly determined from the existing experimental data. The evaluations suggest a probable dc joint resistance in the range 4.5 approx 6.5 n OMEGA and roughly uniform current transfer across the middle 2/3 of the joint. The paper highlights special precautions that are necessary in the placement of voltage taps for future samples of this type to insure proper evaluation of joint resistance.

机译：最近在麻省理工学院脉冲测试设施中达到了US-ITER前丙型型关节样品的评估。使用四种方法来评估样品的零场直流性能：电压抽头测量，霍尔探头和电流密度分布的拾取线圈测量，接头的直流电阻和氦流量热量的详细电磁建模。由于关节的复杂结构和高阻材料的使用，因此不能直接从现有的实验数据中直接确定关节电阻的精确值。评估表明，范围内的可能直流接头电阻在4.5°Ω4.5nω和接头中间2/3中大致均匀均匀的电流转移。本文突出了在将未来样本的电压点击放置所需的特殊预防措施，以确保对关节电阻进行适当的评估。

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《International conference on magnet technology》|1998年||共4页
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P.C.Michael; A.Radovinsky; C.Y.Gung; N.N.Martovetsky;
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Analysis of US Preprototype Joint dc Performance

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