In this article, we present the results of the laser ion source
(LIS) for heavy ion high charge state Institute of Theoretical
and Experimental Physics terawatt accumulator facility. This
LIS is a duty ion source of C+4 for the injector.
The main parameters of CO2 laser, vacuum target chamber,
ion beam high voltage extraction system, and low energy beam
transport line are shown. The stability of the LIS operation
is discussed and measured ion beam parameters (ion current,
pulse duration, emittance) for different charge states are
presented. After the upgrading of the laser cavity, high voltage
capacitors, and spark gaps and the installation of a new catalyst
regenerator system, the CO2 laser became much more
stable and allows long term operation. LIS works about 1 ×
106 shots without intervention.