Highly robust, high intensity white synchrotron beam monitor

Microbeam Radiation Therapy (MRT) uses highly collimated, quasi-parallel arrays of X-ray microbeams of 50-600 keV, produced by 3rd generation synchrotron sources. Among the MRT instrument components, the IC0 white X-ray beam monitor serves to measure the dose rate in the white synchrotron beam during the MRT irradiation. This device is essential for MRT clinical application. We constructed an extremely robust yet simple and reliable beam monitor. The device is based on a vacuum isolated Compton diode and is naturally UHV vacuum compatible. The device was subjected to a series of rigorous acceptance and characterization test. These tests are very promising and predetermining the device as an IC0 monitor for the future clinical MRT application.