Plasma potential measurements on text‐upgrade with a 2 MeV heavy ion beam probe (abstract)a)

The plasma potential is measured in TEXT‐upgrade tokamak by injection and detection of high energy heavy ions (thallium and cesium with a single charge) using a 2 MeV accelerator and a parallel plate energy analyzer. The change in beam energy, as it crosses the plasma, gives the local plasma potential at the measurement volume. Recent results of high energy beam operations are presented.