Speaker
Description
The Laser Ion Source (LIS) is commonly employed to generate singly charged heavy ion beams. To produce higher charge states, these systems typically rely on additional components such as charge breeders or electron beam ion sources. However, such setups often come with structural limitations that can significantly reduce the total deliverable current, particularly for highly charged ion beams (HCIBs).
Recently, an alternative LIS approach utilizing higher laser power density has been proposed to complement traditional methods, with the goal of enhancing HCIB production and increasing the extracted current.
In this contribution we will discuss some preliminary experiments to evaluate the potential of this approach: in particular, the current and the charge state distributions of niobium (Nb) ion beam are measured under various conditions, including laser energy, power density in the focal spot, solenoid’s magnetic field for plasma expansion prior to RFQ injection, and extraction voltages, following the Direct Plasma Injection Scheme (DPIS).
Despite being a preliminary study, the results — supported by previous investigations on other species — demonstrate the potential for generating several tens of mA peak current, with charge states as high as 12+. Future work will focus on upgrading the laser system and exploring the effect of laser incidence angle to further optimize HCIB production.
Funding Agency
Work supported by Brookhaven Science Associates, LLC under Contract No. DE-SC0012704 with the U.S. Department
| In which format do you inted to submit your paper? | LaTeX |
|---|