Application of fast CVD diamond photoconductor detectors to MeV X-ray metrology for the AIRIX flash radiographic facility

Diamond has many attractive properties which make it an ideal material for X-ray dosimetry both in physics experiments and medical fields. However, diamond detector abilities have not been well explored under pulsed X-ray irradiations in the range of the MeV energy. To improve the measurement accuracy for use with quantitative radiography of very dense object undergoing an implosion, the detector Mucaddix, composed with five X-ray CVD diamond-sensitive elements, has been developed. It will be integrated into the nearby structures of AIRIX, an induction linear accelerator which is now built in CEA Moronvilliers for detonic experiments with MeV- Bremsstrahlung radiation fields of more than 500 rad per pulse at 1 m from the source. This paper describes, the specifications required for the AIRIX hardness environment, the detector design, and presents experimental results from BALZAC III, a MeV X-ray flash generator.