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Nuclear Instruments and Methods in Physics Research Research: Accelerators, Spectrometers, Detectors and Associated Equipment 518 (2004) 712-720
Transport and cooling of singly-charged noble gas ion beams
G. Ban1, G. Darius1, D. Durand1, X. Fléchard1, M. Herbane1, M. Labalme1, E. Liénard1, F. Mauger1, O. Naviliat-Cuncic1, C. Guénaut2, C. Bachelet2, P. Delahaye, A. Kellerbauer, L. Maunoury, J.Y. Pacquet3

The transport and cooling of noble gas singly-charged ion beams by means of a Radio Frequency Quadrupole Cooler Buncher (RFQCB) have been studied at the LIMBE low energy beam line of the GANIL facility. Ions as light as $^{4}He^+$ have been cooled and stored before their extraction in bunches using $H_2$ as buffer gas. Bunches characteristics have been studied as a function of the parameters of the device. Sizeable transmissions of up to 10 $% $ have been obtained. A detailed study of the lifetime of ions inside the buncher has been performed giving an estimate of the charge exchange cross-section. Results of a microscopic Monte-Carlo transport code show reasonable agreement with experimental data.
1 :  LPCC - Laboratoire de Physique Corpusculaire de Caen
2 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
3 :  GANIL - Grand Accélérateur National d'Ions Lourds
Interactions fondamentales
Physique/Physique Nucléaire Expérimentale

Physique/Physique/Instrumentations et Détecteurs
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