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Laser start-up system for magnetic mirror fusion.

A M Frank, S R Thomas, B S Denhoy

|February 20, 2010

Summary

A new carbon dioxide (CO2) laser system generates high-power laser pulses for fusion energy research. This technology is scalable for future reactor applications.

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Area of Science:

Fusion Energy
Plasma Physics
Laser Technology

Background:

Magnetic mirror fusion experiments require high-temperature plasmas for ignition.
Efficient methods for generating these plasmas are crucial for advancing fusion energy research.

Purpose of the Study:

To develop a carbon dioxide (CO2) laser system capable of producing hot start-up plasmas.
To assess the applicability of the developed laser technology for reactor-scale fusion systems.

Main Methods:

Utilized commercially available lasers to construct the CO2 laser system.
Irradiated frozen ammonia pellets with laser power densities exceeding 10(13) W/cm(2) using 50-nanosecond pulses.
Fabricated optical components through direct machining and standard techniques.

Main Results:

Successfully developed a CO2 laser system for generating hot start-up plasmas.
Achieved high laser power density (over 10(13) W/cm(2)) on target.
Demonstrated the fabrication of necessary optical components.

Conclusions:

The developed CO2 laser system is effective for creating hot start-up plasmas for magnetic mirror fusion.
The technologies employed are directly transferable to reactor-scale fusion energy systems.

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