Roadmap for the design of a superconducting electron cyclotron resonance ion source for Spiral2

Abstract

A review of today achieved A∕Q = 3 heavy ions beams is proposed. The daily operation A∕Q = 3 ion beam intensities expected at Spiral2 are at the limit or above best record 3rd generation electron cyclotron resonance ion source (ECRIS) intensities. The necessity to build a new fully superconducting to fulfill these requirements is outlined. A discussion on the volume of the future source is proposed and the minimum value of 12 liters is derived. An analysis of the x-ray absorption superconducting ECRIS is presented based on VENUS experimental data and geometry. This study underlines the necessity to include a complete x-ray study at the time of source conception. The specifications foreseen for the new ECRIS are presented, followed with the roadmap for the design.

Superconducting ECR ion source: From 24-28 GHz SECRAL to 45 GHz fourth generation ECR

“…Many of the under-construction and next generation heavy ion accelerators require very intense highly charged heavy ion beams, for example, 15 emA of pulsed 238 U 28+ beam for FAIR, 1 13 pµA of CW (continuous wave) 238 U 34+ /U 33+ for FRIB, 2 and 1 emA of CW 36 Ar 12+ for SPIRAL2. 3 HIAF, 4 a next generation High Intensity heavy ion Accelerator Facility (HIAF) to be built by IMP, requires the ion source to be able to deliver 50 pµA of pulsed 238 U 35+ and 30 pµA of CW 238 U 35+ beams, even higher charge state such as 238 U 45+ , in order to get a higher energy gain and make the accelerator more compact with lower cost. However, these beam intensities with a good long-term stability required by those accelerator facilities have not yet been achieved by any existing ion sources.…”