A twisted solenoid coil (TOKI-MC) has been designed and fabricated in order to study the mechanical properties of the Large Helical Device (LHD). One of the most important R&D items of the LHD is the mechanical behavior of the helical coils under a large electromagnetic force. The TOKI-MC was wound obliquely on the 3D-machined elliptical bobbin with a maximum torsional rate of 36deg/m at the innermost conductor. The maximum field in the coil is 7.7 T with an operating current of 20 kA, an average current density of 40 A/mm^2, and a stored energy of 11 MJ. The TOKI-MC can simulate the electromagnetic force, conductor torsional rate, magnetic field, operating current, and current density of the LHD superconducting helical coils. The design and test results of the conductor and the design and fabrication of the coil are described
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机译：为了研究大型螺旋装置（LHD）的机械性能，已经设计并制造了扭曲的电磁线圈（TOKI-MC）。 LHD的最重要的研发项目之一是螺旋线圈在较大电磁力作用下的机械性能。将TOKI-MC倾斜缠绕在3D加工的椭圆形绕线管上，最大内导体处的最大扭转率为36deg / m。线圈中的最大磁场为7.7 T，工作电流为20 kA，平均电流密度为40 A / mm ^ 2，存储的能量为11 MJ。 TOKI-MC可以模拟LHD超导螺旋线圈的电磁力，导体扭转率，磁场，工作电流和电流密度。描述了导体的设计和测试结果以及线圈的设计和制造
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