Measurement of plasma parameters of an ion source for EAST-NBI using water-cooled Langmuir probe

As the langmuir probe is a famous diagnosis tool for plasmas, the langmuir probe with cooling water is developed for an EAST-NBI high current ion source. Using the sawtooth wave sweeping power, the electron temperature and density are measured for the first time, and the plasma uniformity is analyzed with three langmuir probes. They are very useful to study the characteristics of high current ion sources.