Speaker
Description
The 6-MeV and 9-MeV electron linear accelerators (LINACs) were designed and constructed in 2015 and in 2018 at the Dongnam Institute of Radiological & Medical Sciences (DIRAMS), Busan, Korea. Their C-band accelerating columns were chosen as a bi-periodic on-axis coupled structure and operated in the π/2 standing-wave mode. They are used for preclinical irradiators for in vitro studies of cells and small animals, and the development & test of LINAC components. Preclinical studies have shown that irradiation with ultra-high dose-rate beam known as FLASH kills cancer cells with minimal damage to normal cells. The DIRAMS LINACs provide the conventional dose rate beam (<0.1 Gy/s) and also the ultra-high dose-rate beam (> 40 Gy/s) by the precise control of the pulse modulator combined with a single-board computer. For the real-time monitoring of FLASH beams, the delivered dose was estimated by the measured charge by the transmission-type ionization-chamber. In this talk, we present the status of DIRAMS LINACs and also the preclinical results.
