Proof-of-principle of the ion deflectometry for B-field measurements in Z-pinch plasmas

We have successfully tested the feasibility of the ion deflectometry in deuterium gas-puff MA Z-pinch experiments on GIT-12. In a unique configuration, we employ ion beams, accelerated during a Z-pinch current disruption, for ion imaging technique as a diagnostic tool for B-field measurements in Z-pinch plasma. Pinhole-camera detectors obtain experimental images of the deflected ion beams. Simulations of ion trajectories deflected in B-fields are used to analyze experimental data and show capabilities of this diagnostic method. For the first time, we can study magnetic fields on-axis of the Z-pinch and to estimate a Z-pinch current.

This research has been supported in part by the research program under Grants: GACR 19-02545S, MEYS LTAUSA17084, LTT17015, 8JPL19014, CZ.02.1.01 0.0 0.0 16 019 0000778 and CTU SGS19 167 OHK3 3T 13.