There is proposed a new upper divertor for the ASDEX Upgrade (AUG) tokamak experiment [1]. It is planned to be equipped with internal coils for investigation of advanced magnetic configurations like e.g. „snowflake“ [2]. Due to the close vicinity of the coils to the plasma, high induced and very stiff voltages are expected during disruption events, as shown in [3,4],. This voltage is a high risk for either damaging the connected power supplies and/or for turning into high currents causing damage to the tokamak by Lorentz forces. The proposed device named “ripping crowbar” detects and overtakes the full high voltage of up to 5 kV during a plasma disruption at full load current of up to 3 kA to protect the connected power supply which can deal with voltage not higher than 340 V absolute value. The concept will be given and discussed. Experiments were started at much lower current and voltage by use of commercially available hardware. This is a starting point to enhance the working regime in a time-saving way, because there exist no commercially available solution for the target values. The only known field with comparable power stage solutions can be found in the field of High Voltage Direct Current (HVDC) circuit breakers [5]. The final solution should be scalable in voltage, current and power to adapt it to other applications in and outside the field of fusion technology. Part of the development are the Insulated Gate Bipolar Transistor (IGBT) based powerstage, the drivers, the measurement unit to detect disruptions and the triggering unit. At the end, most important will be reliability of this safety relevant device to protect multi-million investments into power supply and new divertor.

建议为A SDEX U p g使用新的上部分流器rade（AUG）托卡马克实验[1]。计划配备内部线圈，以研究高级磁性配置，例如“雪花” [2]。如[3,4]所示，由于线圈与等离子体之间的距离非常近，因此在中断事件期间会产生很高的感应电压和非常坚硬的电压。该电压可能会损坏所连接的电源和/或变成大电流，从而在洛伦兹力的作用下损坏托卡马克，因此具有很高的风险。拟议中的名为“撕裂撬棍”的设备可在等离子中断期间在高达3 kA的满载电流下检测并超过5 kV的全高电压，以保护所连接的电源，该电源可以处理绝对电压不超过340 V的电压价值。将给出并讨论该概念。通过使用市售的硬件，在低得多的电流和电压下开始了实验。这是以节省时间的方式增强工作机制的起点，因为没有针对目标值的商用解决方案。具有可比功率级解决方案的唯一已知领域可以在以下领域找到：ħ IGH V oltage d I整流器Ç urrent（HVDC）断路器[5]。最终的解决方案应该在电压，电流和功率上具有可扩展性，以使其适应融合技术领域内外的其他应用。发展的一部分是我nsulated ģ吃乙ipolar Ť ransistor（IGBT）基于powerstage，驱动器，测量单元，用于检测中断和触发单元。最后，最重要的是该安全相关设备的可靠性，以保护数百万美元的电源和新分流器投资。