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Monochromatic short pulse laser produced ion beam using a compact passive magnetic device
S N Chen1, M Gauthier1, D P Higginson1
1LULI, École Polytechnique, CNRS, CEA, UPMC, 91128 Palaiseau, France.
The Review of Scientific Instruments
|May 3, 2014
Summary
A compact chicane device selects specific energy intervals from broadband laser-accelerated proton beams. This innovation provides a reproducible, high-current, short-duration particle source for specialized applications.
Area of Science:
- Physics
- Particle Acceleration
- Laser-Plasma Interactions
Background:
- High-intensity lasers generate proton and ion beams with unique properties like high charge and short duration.
- These laser-accelerated beams typically possess a broadband energy spectrum, limiting their use in experiments requiring monoenergetic beams.
Purpose of the Study:
- To develop a compact device for selecting specific energy intervals from broadband laser-produced proton beams.
- To adapt conventional chicane devices for efficient energy selection in a small form factor.
Main Methods:
- Utilized a compact chicane device (10 cm × 20 cm) employing magnetic fields.
- Bent the trajectory of laser-produced proton beams through two slits to define minimum and maximum energy selection.
Main Results:
- Successfully demonstrated the selection of a specific energy interval from a broadband proton beam spectrum.
- Achieved a reproducible output spectrum from short pulse laser-produced charged particle beams.
Conclusions:
- The developed compact chicane device enables energy selection for laser-accelerated proton beams.
- This technology provides a high-current, short-duration particle source with a reproducible spectrum for dedicated applications.
