Electron cyclotron resonance ion trap, a multicharged ion breeder/buncher

N. Chauvin (1) , J.F. Bruandet (1) , J.C. Curdy (1) , R. Geller (1) , T. Lamy (1) , P. Sortais (1)

1 LPSC - Laboratoire de Physique Subatomique et de Cosmologie

The basic mode of operation of an electron cyclotron resonance ion source is recalled, particularly when using such a device as an ion charge breeder for the production of radioactive ion beams suitable for acceleration (1+→n+conversion). A new mode of operation, Electron Cyclotron Resonance Ion Trap (ECRIT), permitting to trap and bunch the n+ ion beams is demonstrated. The principle of the ECRIT mode is explained. The charge breeder/buncher system is experimentally verified by the injection of a 400 nA Rb1+ ion beam leading to a 11.5 μA peak current of the Rb15+ ion beam extracted during the first ms. The temporal evolution of the cumulated particle transformation efficiency is measured in the case of Rb15+ and shows a 2.2% efficiency during the first 20 ms of the ECRIT extraction. The interest of the ECRIT mode is finally shown when used for the production of high-energy radioactive ion beams. (Elsevier)

Domaines: Instrumentations et Détecteurs [physics.ins-det]

N. Chauvin, J.F. Bruandet, J.C. Curdy, R. Geller, T. Lamy, et al.. Electron cyclotron resonance ion trap, a multicharged ion breeder/buncher. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1998, 419, pp.185-188. ⟨10.1016/S0168-9002(98)01131-0⟩. ⟨in2p3-00000167⟩