A low eddy current cryogen circuit for superconducting magnets including at least a first cooling coil made of an electrically conducting material and having at least one electrical isolator incorporated in the first cooling coil. The electric connector terminal has two arms and a connecting portion connected the two arms. The MEMS substrate includes a first semiconductor layer connected to a second semiconductor layer with a dielectric layer in between. When the CPU is rebooted, after a software update or crash, it operates in a special reload mode and is able to recover any system state information not available in the network device from the metadata module. Compared with the pure 1,2-alkanediols, the mixtures have a synergistically intensified action. The locking mechanism includes a spring with an arresting arm and a retaining arm configured to be mated with respective walls of the column, and biased by a bulge on the column.