Recent progress in magnetic measurement

This article presents recent progress in magnetic measurements of magnetic confinement systems. ''Signal drift'' in the integrator for magnetic measurements is one of the major problems for plasma control and the estimation of equilibrium parameters in long-pulse operation. In addition, the durability of sensors such as a magnetic probe, a flux loop, etc., under fusion neutron irradiation environments is also important. The present status of the developments of a long-pulse integrator and a new magnetic sensor are reported. (author)