Performance of the magnetic sensor and the integrator for the KSTAR magnetic diagnostics

Magnetic sensors and the integrator for the magnetic field measurement have been developed for the engineering design of the KSTAR magnetic diagnostics (MDs). The frequency characteristics of a magnetic sensor (for magnetic fluctuation measurement) is investigated from the measurement of the response function of the sensor and the analysis of the equivalent electronic circuit in the frequency range of 10 kHz -15 MHz. An analog integrator, which automatically compensates a drift, is fabricated and its performance test (connected with a magnetic sensor) is carried out under a rf environment. The experimental results from the performance test of the sensor and the analog integrator are presented. (C) 2004 American Institute of Physics.