Skip to Main content Skip to Navigation
Journal articles

Experimental study of a high intensity radio-frequency cooler

Abstract : Within the framework of the DESIR/SPIRAL-2 project, a radio-frequency quadrupole cooler named SHIRaC has been studied. SHIRaC is a key device of SPIRAL-2, designed to enhance the beam quality required by DESIR. The preliminary study and development of this device has been carried out at Laboratoire de Physique Corpusculaire de CAEN (LPC Caen), France. The goal of this paper is to present the experimental studies conducted on a SHIRaC prototype. The main peculiarity of this cooler is its efficient handling and cooling of ion beams with currents going up as high as 1  μA which has never before been achieved in any of the previous coolers. Much effort has been made lately into these studies for development of appropriate optics, vacuum and rf systems which allow cooling of beams of large emittance (∼80π  mm mrad) and high current. The dependencies of SHIRaC’s transmission and the cooled beam parameters in terms of geometrical transverse emittance and the longitudinal energy spread have also been discussed. Investigation of beam purity at optimum cooling condition has also been done. Results from the experiments indicate that an emittance reduction of less than 2.5π  mm mrad and a longitudinal energy spread reduction of less than 4 eV are obtained with more than 70% of ion transmission. The emittance is at expected values whereas the energy spread is not.
Document type :
Journal articles
Complete list of metadata
Contributor : Sandrine Guesnon Connect in order to contact the contributor
Submitted on : Friday, July 17, 2015 - 10:44:31 AM
Last modification on : Tuesday, October 19, 2021 - 11:33:55 PM

Links full text



R. Boussaïd, G. Ban, J.F. Cam. Experimental study of a high intensity radio-frequency cooler. Physical Review Special Topics - Accelerators and Beams, 2015, 18 (7), pp.072802. ⟨10.1103/PhysRevSTAB.18.072802⟩. ⟨in2p3-01177776⟩



Les métriques sont temporairement indisponibles