Laser ion source of multicharged ions for ITEP accumulator facility

Abstract

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.