ECRIS2012 - List of Authors (Spaedtke, P.)

Paper

Title

Page

Ion Beam Extraction from Magnetized Plasma

106

P. Spädtke, R. Lang, J. Mäder, F. Maimone, J. Roßbach, K. Tinschert
GSI, Darmstadt, Germany

With increasing the total extracted current for any ion source, the optimisation of the extraction system becomes more important, because of the space charge effect. Several attempts have been made in the past to simulate the extraction from an Electron Cyclotron Resonance Ion Source (ECRIS) in a correct way. Most of these attempts failed, because they were not able to reproduce the experimental results. The best model up to now is given by the following procedure: tracing the magnetic field lines through the extraction aperture, looking where these field lines are coming from; using these coordinates of the magnetic field line as starting points for ions to be extracted; the initial current of each trajectory is determined by theoretical assumptions about the plasma or by a plasma simulation; Child's law is applicable locally only in direction of the magnetic field, if no emission limited flow is present.

Slides WEYO03 [16.955 MB]

WEZO03

Recent Results of PHOENIX V2 and New Prospects with PHOENIX V3

117

T. Thuillier, J. Angot, T. Lamy, M. Marie-Jeanne
LPSC, Grenoble Cedex, France
C. Barue, C. Canet, M. Dupuis, P. Lehérissier, F. Lemagnen, L. Maunoury, O. Osmond
GANIL, Caen, France
C. Peaucelle
IN2P3 IPNL, Villeurbanne, France
P. Spädtke
GSI, Darmstadt, Germany

Funding: This work is partially funded by the European Commission under the 7th Framework Programme Grant Agreement 283745 (CRISP)
The 18 GHz PHOENIX V2 ECRIS is running since 2010 on the heavy ions low energy beam transport line (LEBT) of SPIRAL2 installed at LPSC Grenoble. PHOENIX V2 will be the starting ion source of SPIRAL 2 at GANIL. The status and future developments of this source are presented in this paper. Recent studies with Oxygen and Argon beams at 60 kV have demonstrated reliable operation at 1.3 emA of O⁶⁺ and 200 eμA of Ar¹²⁺. Metallic ion beam production has been studied with the Large Capacity Oven developed by GANIL and 20 eμA of Ni¹⁹⁺ have been obtained. In order to improve further the beam intensities for Spiral2, an economical upgrade of the source named PHOENIX V3 has been recently decided by the project management. The goal is to double the plasma chamber volume from 0.6 to 1.2 liter by increasing the chamber wall radius, keeping the whole magnetic confinement intensity unchanged. The PHOENIX V3 magnetic design will be presented along with a status of the project.

Slides WEZO03 [8.818 MB]

Paper	Title	Page
WEYO03	Ion Beam Extraction from Magnetized Plasma	106
	P. Spädtke, R. Lang, J. Mäder, F. Maimone, J. Roßbach, K. Tinschert GSI, Darmstadt, Germany
	With increasing the total extracted current for any ion source, the optimisation of the extraction system becomes more important, because of the space charge effect. Several attempts have been made in the past to simulate the extraction from an Electron Cyclotron Resonance Ion Source (ECRIS) in a correct way. Most of these attempts failed, because they were not able to reproduce the experimental results. The best model up to now is given by the following procedure: tracing the magnetic field lines through the extraction aperture, looking where these field lines are coming from; using these coordinates of the magnetic field line as starting points for ions to be extracted; the initial current of each trajectory is determined by theoretical assumptions about the plasma or by a plasma simulation; Child's law is applicable locally only in direction of the magnetic field, if no emission limited flow is present.
	Slides WEYO03 [16.955 MB]

WEZO03	Recent Results of PHOENIX V2 and New Prospects with PHOENIX V3	117
	T. Thuillier, J. Angot, T. Lamy, M. Marie-Jeanne LPSC, Grenoble Cedex, France C. Barue, C. Canet, M. Dupuis, P. Lehérissier, F. Lemagnen, L. Maunoury, O. Osmond GANIL, Caen, France C. Peaucelle IN2P3 IPNL, Villeurbanne, France P. Spädtke GSI, Darmstadt, Germany
	Funding: This work is partially funded by the European Commission under the 7th Framework Programme Grant Agreement 283745 (CRISP) The 18 GHz PHOENIX V2 ECRIS is running since 2010 on the heavy ions low energy beam transport line (LEBT) of SPIRAL2 installed at LPSC Grenoble. PHOENIX V2 will be the starting ion source of SPIRAL 2 at GANIL. The status and future developments of this source are presented in this paper. Recent studies with Oxygen and Argon beams at 60 kV have demonstrated reliable operation at 1.3 emA of O⁶⁺ and 200 eμA of Ar¹²⁺. Metallic ion beam production has been studied with the Large Capacity Oven developed by GANIL and 20 eμA of Ni¹⁹⁺ have been obtained. In order to improve further the beam intensities for Spiral2, an economical upgrade of the source named PHOENIX V3 has been recently decided by the project management. The goal is to double the plasma chamber volume from 0.6 to 1.2 liter by increasing the chamber wall radius, keeping the whole magnetic confinement intensity unchanged. The PHOENIX V3 magnetic design will be presented along with a status of the project.
	Slides WEZO03 [8.818 MB]