Abstract
A prototype of a new mechanical sensor for steady-state magnetic field has been manufactured and tested which consists of a sensing coil and a load cell. The mechanical force sensor is a new type of magnetic sensor feasible for frequencies smaller than 0.1 Hz and employs the measurement of steady-state electromagnetic force. The sensor has been examined, and the following results were obtained. (1) A signal proportionality to simulated force was obtained in the load cell tests. (2) Reproducible signal drift concerning the temperature was obtained over the range of the International Thermonuclear Experimental Reactor environment. (3) Signal proportionality to the magnetic field was obtained in the steady-state magnetic field measurement tests. (4) The significant increase of load cell linearity error was not observed after irradiation of 7.2×106 Gy. These results indicate that the mechanical sensor will provide the practical feasibility in the long time magnetic field measurement.
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