A movable symmetric chamber liner in a plasma reaction chamber, for protecting the plasma reaction chamber, enhancing the plasma density and uniformity, and reducing process gas consumption, comprising a cylindrical wall, a bottom wall with a plurality of openings, a raised inner rim with an embedded heater, heater contacts, and RF ground return contacts. The chamber liner is moved by actuators between an upper position at which substrates can be transferred into and out of the chamber, and a lower position at which substrate are processed in the chamber. The actuators also provide electrical connection to the heater and RF ground return contacts.