Quench protection device

A quench protection device for a superconducting magnet is disclosed. The apparatus comprises: a superconducting magnet comprising a plurality of magnet segments; a plurality of varistors, wherein each varistor of the plurality of varistors is electrically connected in parallel across a respective magnet section of the plurality of magnet sections; and a heater device electrically connected to the plurality of varistors and configured to apply heat to each of the plurality of magnet sections in response to a change in voltage across any one or more of the plurality of varistors. The invention further discloses a method for protecting the superconducting magnet. 公开了一种用于超导磁体的失超保护装置。该装置包括：超导磁体，其包括多个磁体区段；多个变阻器，其中所述多个变阻器中的每个变阻器并联地电连接在所述多个磁体区段中的相应磁体区段两端；以及加热器装置，其电连接到所述多个变阻器，并且被配置为响应于所述多个变阻器中的任何一个或多个变阻器两端的电压的变化而向所述多个磁体区段中的每一个磁体区段施加热。还公开了一种保护超导磁体的方法。