Dear radsafers, does anyone know the reliable tool for the megarad dosimetry measurements in the mixed high-energy accelerator generated field except ionisation chamber? Thanks, Igor Azhgirey, azhgirey@mx.ihep.su Radiation Research Departament, Institute for High Energy Physics, 142284 Protvino, Moscow Region, Russia PS. We need to cover 1 - 10 Mrad region.