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Design, Construction, and Test of Compact, Distributed-Charge, X-Band Accelerator Systems that Enable Image-Guided,

Christopher P J Barty^1,2,3, J Martin Algots¹, Alexander J Amador¹

¹Lumitron Technologies, Inc., Irvine, CA, United States.

|August 16, 2024

Summary

This summary is machine-generated.

Compact laser-Compton X-ray systems utilize advanced accelerators to enable micron-scale disease imaging and produce Very High Energy Electrons (VHEEs) for FLASH radiotherapy.

Keywords:

FLASH Lasers VHEE accelerators high-resolution radiography laser-Compton scattering x-band x-rays

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Area of Science:

Medical Physics
Accelerator Physics
Radiotherapy Technology

Background:

Laser-Compton X-ray systems offer potential for advanced medical imaging and radiotherapy.
Compact accelerators are crucial for developing clinically viable systems.
Very High Energy Electrons (VHEEs) are relevant for FLASH radiotherapy dose rates.

Purpose of the Study:

To design and optimize compact laser-Compton X-ray systems.
To enable micron-scale imaging of disease.
To produce VHEE beams for FLASH radiotherapy.

Main Methods:

Utilizing X-band RF accelerator structures with high acceleration gradients (>100 MeV/m).
Employing distributed charge mode with UV laser pulse trains synchronized to RF frequency.
Developing a patented pulse synthesis approach for UV pulse generation.

Main Results:

Achieved micron-scale imaging capability.
Produced VHEE beams suitable for FLASH-relevant dose rates.
Demonstrated an average beam current of up to 10 μA from a compact accelerator.
Generated >10 nC of charge in <100 ns macrobunches using >1000 micro-bunches per RF pulse.

Conclusions:

Compact laser-Compton X-ray systems are feasible for clinical applications.
The developed technology enables both advanced imaging and VHEE production for radiotherapy.
The prototype system achieved key performance metrics for clinical translation.