In a double plasma device a plasma is created by thermionic discharges. A multi-cusp field, generated by permanent magnets mounted at the vessel boundary, lead to a relatively high plasma density together with a magnetic-field-free region in the plasma center. This allows to nicely investigate basic wave phenomena like ion acoustic waves and the transition of these waves into the non-linear regime.
Due to being part of a practical course, the experiment is regularly used by students. Depending on the availability, use by other parties is in general possible.