ECRIS2010 - List of Authors (Lakshmy, P.S.)

Paper

Title

Page

3D Simulation Studies and Optimization of Magnetic Holes of HTS-ECRIS for Improving the Extraction Efficiency and Intensities of Highly Charged Ions

27

G. Rodrigues, R.N. Dutt, D. Kanjilal, P.S. Lakshmy, Y. Mathur, U.K. Rao, A. Roy
IUAC, New Delhi, India
R. Baskaran
IGCAR, Channai, India

3D simulation studies using RADIA code have been performed to optimise the magnetic holes in high temperature superconducting electron cyclotron resonance (HTS-ECRIS) ion source for improving the extraction efficiency and intensities of highly charged ions. The magnetic field improvements using simple techniques like optimisation of iron regions is found to be economical. The extraction efficiency can be increased three-fold in the case of a hexapole magnet depending on the level of the uniformity of the fields in the high and low regions. This technique further minimises localized heating of the plasma chamber walls which can improve the vacuum conditions in an ECR ion source. For superconducting sources where the x-ray heat load poses severe problems during operation, such a reduction of heating load is of great significance. The typical triangular pattern of the plasma impact observed on the plasma electrode of HTS ECRIS at various tuning conditions are reproduced by the simulations. Details of the simulations and experimental results will be presented.

Slides MOCOCK02 [2.925 MB]

Paper	Title	Page
MOCOCK02	3D Simulation Studies and Optimization of Magnetic Holes of HTS-ECRIS for Improving the Extraction Efficiency and Intensities of Highly Charged Ions	27
	G. Rodrigues, R.N. Dutt, D. Kanjilal, P.S. Lakshmy, Y. Mathur, U.K. Rao, A. Roy IUAC, New Delhi, India R. Baskaran IGCAR, Channai, India
	3D simulation studies using RADIA code have been performed to optimise the magnetic holes in high temperature superconducting electron cyclotron resonance (HTS-ECRIS) ion source for improving the extraction efficiency and intensities of highly charged ions. The magnetic field improvements using simple techniques like optimisation of iron regions is found to be economical. The extraction efficiency can be increased three-fold in the case of a hexapole magnet depending on the level of the uniformity of the fields in the high and low regions. This technique further minimises localized heating of the plasma chamber walls which can improve the vacuum conditions in an ECR ion source. For superconducting sources where the x-ray heat load poses severe problems during operation, such a reduction of heating load is of great significance. The typical triangular pattern of the plasma impact observed on the plasma electrode of HTS ECRIS at various tuning conditions are reproduced by the simulations. Details of the simulations and experimental results will be presented.
	Slides MOCOCK02 [2.925 MB]