Transport of injected impurities in Heliotron E

Impurities have been injected into Heliotron E using the laser blow-off technique in order to study the transport properties of currentless plasmas. Heliotron E is a non-axisymmetric 1=2 toroidal device with strong magnetic shear and a large rotational transform. For currentless plasmas, there are two basic operating modes: ECH produced plasmas formed by injecting up to 350 kW of power at 53.2 CHz into hydrogen and deuterium gases at a helical magnetic field of 1.9 T, and neutral beam heated plasmas created by injecting up to 2.2 NW of beam power into ECH discharges at helical fields of .94 and 1.9 T. The impurity emissions from injected silicon, titanium and iron were observed with two visible spectrometers, a 2.2m grazing incidence monochromator, a flat crystal Bragg spectrometer, an x-ray diode array, and two bolometer arrays. Parameter studies of impurity transport were performed by varying the electron density, the working gas, the input ECH and NBI powers, and the helical field during impurity injection