ECRIS2010 - List of Authors (Pierret, C.)

Paper

Title

Page

Multigan®: a New Multicharged Ion Source Based on Axisymetric Magnetic Structure

37

L. Maunoury, P. Delahaye, M. Dubois, P. Jardin, P. Lehérissier, M. Michel, J.Y. Pacquet
GANIL, Caen, France
S. Biri
ATOMKI, Debrecen, Hungary
X. Donzel, G. Gaubert, R. Leroy, A.C.C. Villari
PANTECHNIK, BAYEUX, France
C. Pierret
CIMAP, Caen, France

Standard ECR ion sources have radial magnetic field created by a multi-pole, e.g. hexapole or higher order, which fills all space in the center of the source structure. Based on the Monogan® ECRIS [1] concept, a new multicharged ECR ions source has been designed with a large opening space in the center of the source structure. This particular design allows, in a first approach, direct radial contact with the ECR plasma, allowing positioning of probes and targets for radioactive beam production very close to the plasma region. Secondly, the absence of a multi-pole allows considering extremely high magnetic fields with significantly smaller structural constraints. This source is combining the advantages of the axisymetric magnetic feature of Monogan® with higher frequencies. This paper will describe the magnetic structure calculation as well as the mechanical design and stresses of a full permanent magnet ion source using this concept. This source will be the first prototype of such an ECR ion source. Finally, using TrapCad code [2], an estimation of the electronic energy distribution has been calculated and thus, the performance of the source has been deduced. The beam formation and extraction were also roughly calculated taking into account magnetic and electric fields.
[1] P. Jardin et al., Review of Scientific Instruments, 73, 789 (2002).
[2] L. Maunoury et al., Plasma Sources Science and Technology , 18, 015019 (2009).

Slides MOCOCK05 [5.532 MB]

Paper	Title	Page
MOCOCK05	Multigan®: a New Multicharged Ion Source Based on Axisymetric Magnetic Structure	37
	L. Maunoury, P. Delahaye, M. Dubois, P. Jardin, P. Lehérissier, M. Michel, J.Y. Pacquet GANIL, Caen, France S. Biri ATOMKI, Debrecen, Hungary X. Donzel, G. Gaubert, R. Leroy, A.C.C. Villari PANTECHNIK, BAYEUX, France C. Pierret CIMAP, Caen, France
	Standard ECR ion sources have radial magnetic field created by a multi-pole, e.g. hexapole or higher order, which fills all space in the center of the source structure. Based on the Monogan® ECRIS [1] concept, a new multicharged ECR ions source has been designed with a large opening space in the center of the source structure. This particular design allows, in a first approach, direct radial contact with the ECR plasma, allowing positioning of probes and targets for radioactive beam production very close to the plasma region. Secondly, the absence of a multi-pole allows considering extremely high magnetic fields with significantly smaller structural constraints. This source is combining the advantages of the axisymetric magnetic feature of Monogan® with higher frequencies. This paper will describe the magnetic structure calculation as well as the mechanical design and stresses of a full permanent magnet ion source using this concept. This source will be the first prototype of such an ECR ion source. Finally, using TrapCad code [2], an estimation of the electronic energy distribution has been calculated and thus, the performance of the source has been deduced. The beam formation and extraction were also roughly calculated taking into account magnetic and electric fields. [1] P. Jardin et al., Review of Scientific Instruments, 73, 789 (2002). [2] L. Maunoury et al., Plasma Sources Science and Technology , 18, 015019 (2009).
	Slides MOCOCK05 [5.532 MB]