15-20 October 2017
CERN
Europe/Zurich timezone

Effect of the Plasma Chamber Radius on the High Charge State Production in an ECR Ion Source

16 Oct 2017, 16:30
2h 30m
CERN

CERN

Centre international de Conférence Genève (CICG). http://www.cicg.ch/
Poster presentation Production of highly charged ion beams Poster Session 1

Speaker

Thomas Thuillier

Description

The version 2 and 3 of the 18 GHz PHOENIX ECR ion source have been developed in the framework of the SPIRAL2 project. The former V2 design focused on maximizing the radial magnetic confinement at the plasma chamber wall, resulting in a compact chamber volume of 0.6 liter with a diameter of 62 mm. The new V3 design focused on a larger diameter of 89 mm (chamber volume 1.4 liter) keeping the radial field intensity as high as possible and enhanced pumping features. The two versions having nearly the same axial mirror structure and the same radial magnetic field intensity at wall, it is of interest to compare their performance as a function of the plasma chamber radius. Preliminary experiments have shown an improvement of high charge state production of Argon up to 120% in the V3 source with respect to the V2, delivering 120 µA of Ar$^{14+}$ beam for instance. The V3 results will be presented, compared with the V2 and possible physics explanation for such an effect reviewed.

Primary authors

Thomas Thuillier Laurent Maunoury (Grand Accélérateur National d’Ions Lourds (GANIL))

Co-authors

Christophe Barue (Grand Accélérateur National d’Ions Lourds (GANIL)) Julien ANGOT (CNRS - IN2P3) Mr Laurent BONNY (LPSC-UGA) Mr Jean-Luc Flambard (GANIL) Thierry Lamy (LPSC Laboratoire de Physique Subatomique et de Cosmologie (LPSC)) Mr Patrick sole (CNRS) Mr Alexandre leduc (CNRS) Mr Josua JACOB (CNRS - IN2P3)

Presentation materials

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