A High-Energy Transmission Imaging Measurement of a Varian M9 Linear Accelerator Using a 3D-CdZnTe Detector

High resolution X-ray radiography, or transmission imaging, has a wide range of applications. 3D-CZT radiation detectors are capable of producing various types of radiation images with both photons and neutrons. In this work, a $40 \times 40 \times 10 \mathrm{~mm}^{\wedge} 3$ CZT detector was placed in the beamline of a Varian M9 Linear Accelerator (LINAC) behind a specifically designed lead, copper and tin shielding configuration. A tungsten block was positioned at an angle covering a fraction of the detector face in efforts to demonstrate an attenuation shadow. The resulting radiation image demonstrates an expected count gradient, albeit at a limited resolution. There is also an unexpected uniform waveform decay present in all anode signals during the LINAC pulse. Work will be continued to obtain a high resolution gradient image from future measurements.