Our current cesium source irradiator is nearing its' usuable life span, where the time to irradiate will be getting too long. We are exploring our options to replace with either another cesium source or an x-ray irradiator in the next 5-8 yrs. Does anyone have experience with an x-ray irradiator that you'd be willing to share? What are the downsides, if any? What calibration/QC is necessary? Any additional regulatory burden? Training issues? thank you for your help!