Plasma shape control by pulsed solenoid on laser ion source

A Laser ion source (LIS) provides high current heavy ion beams with a very simple mechanical structure. Plasma is produced by a pulsed laser ablation of a solid state target and ions are extracted by an electric field. However, it was difficult to manipulate the beam parameters of a LIS, since the p...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2015-09, Vol.795 (C), p.151-155
Main Authors: Sekine, M., Ikeda, S., Romanelli, M., Kumaki, M., Fuwa, Y., Kanesue, T., Hayashizaki, N., Lambiase, R., Okamura, M.
Format: Article
Language:English
Subjects:
Heavy ion source
Laser ablation plasma
Laser ion source
PARTICLE ACCELERATORS
Plasma shape control
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Summary:A Laser ion source (LIS) provides high current heavy ion beams with a very simple mechanical structure. Plasma is produced by a pulsed laser ablation of a solid state target and ions are extracted by an electric field. However, it was difficult to manipulate the beam parameters of a LIS, since the plasma condition could only be adjusted by the laser irradiation condition. To enhance flexibility of LIS operation, we employed a pulsed solenoid in the plasma drift section and investigated the effect of the solenoid field on singly charged iron beams. The experimentally obtained current profile was satisfactorily controlled by the pulsed magnetic field. This approach may also be useful to reduce beam emittance of a LIS.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2015.05.030