Magnetic field measurements using the orthogonal transient internal probe

Summary form only given, as follows. The transient internal probe (TIP) diagnostic is designed to measure the internal magnetic field profile of hot plasmas. A small magneto-optic probe is illuminated from the front with 514.5 nm laser light while being fired through the plasma at velocities in excess of 2 km/s. Magnetic field profiles are obtained by measuring the Faraday rotated laser light reflected from the probe. First generation TIP probes have the ability to measure only the axial component of the magnetic field. The orthogonal TIP probe, however, has the capability of measuring fields which are perpendicular to the direction of probe travel. Orthogonal measurement capability can provide a full radial scan of the poloidal field profile and will serve as a technology base for for future multi-dimensional TIP probes. Magnetic field resolution is 20 G, spatial resolution is 5 mm, and the system frequency response is 10 MHz. Measurements using the orthogonal TIP probe will be presented.