Abstract The ADITYA tokamak device is used to produce circular plasma for few hundreds of milli-seconds. The edge physics study in this device led to significant contributions. The up-gradation of this device (ADITYA-U) is focused to address issues relevant to heat removal capability at the plasma edge. This requires to construct plasma equilibrium with divertor configuration. In this regard, additional pair of coils at the inboard and outboard are introduced to construct plasma equilibrium. The inboard pair mainly creates the divertor configuration while the outboard pair provides flexibility in increasing the size of the plasma. This study has shown that plasma equilibrium with double and single null configurations can be produced for plasma current up to 100 kA and with plasma poloidal beta of 0.3. The operational space in these plasma parameters is limited by the requirement on gap of 3 cm between null point and the vacuum vessel as well as limited due to maximum allowable current of 150 kA in divertor coil.

中文翻译：

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Aditya 升级 – 平衡研究

摘要 ADITYA 托卡马克装置用于产生数百毫秒的圆形等离子体。该设备的边缘物理研究做出了重大贡献。该设备 (ADITYA-U) 的升级重点是解决与等离子体边缘散热能力相关的问题。这需要通过偏滤器配置来构建等离子体平衡。在这方面，在内侧和外侧引入了额外的一对线圈来构建等离子体平衡。内侧对主要创建偏滤器配置，而外侧对则提供增加等离子体尺寸的灵活性。这项研究表明，当等离子体电流高达 100 kA 且等离子体极向 β 为 0.3 时，可以产生双零配置和单零配置的等离子体平衡。这些等离子体参数的操作空间受到零点和真空容器之间 3 cm 间隙要求的限制，并且由于偏滤器线圈中最大允许电流 150 kA 的限制。