Experimental study of the dependence of beam current on injection magnetic field in 6.4 GHz ECR ion source |
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Authors: | G S Taki P R Sarma D K Chakraborty R K Bhandari P K Ray |
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Institution: | (1) Department of Atomic Energy, Variable Energy Cyclotron Centre, Block-AF, Bidhan Nagar, 700 064 Kolkata, India;(2) Bengal Engineering and Science University, Shibpur, 711 103 Howrah, India |
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Abstract: | The ion current from an electron cyclotron resonance (ECR) heavy ion source depends on the confining axial and radial magnetic
fields. Some efforts were made by earlier workers to investigate magnetic field scaling on the performance of the ECR source.
In order to study the dependence of the ion current on the injection magnetic field in the 6.4 GHz ECR source, we have measured
the current by varying the peak injection field and have inferred that the variation of the current is exponential up to our
maximum design injection field of 7.5 kG. An attempt has been made to understand this exponential nature on the basis of ion
confinement time. |
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Keywords: | Electron cyclotron resonance ion source mirror ratio field scaling ion confinement time ion current |
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