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The Distributed Charge Compton Source (DCCS) is being prepared for dosimetry experiments using very high energy electrons (VHEE). This system aims to enable X-ray imaging and VHEE treatment for studying the FLASH effect.

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Area of Science:

  • Medical Physics
  • Accelerator Physics
  • Radiation Oncology

Background:

  • The Lumitron Technologies Distributed Charge Compton Source (DCCS) is a compact X-band accelerator.
  • It is being commissioned for very high energy electron (VHEE) production (up to 100 MeV).
  • The DCCS is designed for both X-ray imaging and VHEE delivery.

Purpose of the Study:

  • To describe preparations for the first dosimetry experimental campaign using the DCCS.
  • To enable simultaneous X-ray imaging and VHEE treatment of animal models.
  • To investigate the dose-rate dependent FLASH effect at ultra-high dose rates.

Main Methods:

  • Hardware development for the DCCS system.
  • Monte Carlo (TOPAS) simulations for beam shaping and dosimetry.
  • Installation of a diamond vacuum exit window.

Main Results:

  • Initial DCCS operation produced a 25-MeV electron beam with 1.7-nC macrobunches at 100 Hz.
  • Simulations indicate a 12-mm diameter flat-field beam at 25 MeV, delivering 10 Gy in <100 ms.
  • The system is being configured for VHEE dosimetry from 25 MeV to 90 MeV.

Conclusions:

  • The DCCS is a promising system for VHEE-based research, including FLASH investigations.
  • The developed hardware and simulation methods support upcoming experimental campaigns.
  • This technology could advance understanding of ultra-high dose rate radiation effects.