Pixelated transmission-mode diamond X-ray detector.

Area of Science:

• Materials Science
• Particle Detectors
• X-ray Optics

Background:

• Real-time characterization of X-ray beams is essential for optimizing experiments and imaging.
• Existing detectors often lack the capability for simultaneous measurement of flux, position, and morphology.
• Diamond-based detectors offer potential advantages due to their material properties.

Purpose of the Study:

• To develop and test a prototype transmission-mode pixelated diamond X-ray detector.
• To enable simultaneous real-time measurement of X-ray beam flux, position, and morphology.
• To validate the detector's performance using synchrotron X-ray sources.

Main Methods:

• Fabrication of a pixelated diamond detector using lithographic patterning of vertical and horizontal stripes.
• Implementation of a novel signal readout scheme with rotated bias and current readout at ~1 kHz.
• Testing the detector at synchrotron beamlines (NSLS X28C and CHESS G3) with varying X-ray energies and flux densities.

Main Results:

• The detector achieved precise beam position measurement with positional noise within 1%.
• Accurate beam morphology information was obtained with an error within 2%.
• A software-controlled single channel mode provided accurate flux measurement with fluctuations within 1%.

Conclusions:

• The developed pixelated diamond X-ray detector successfully demonstrates simultaneous real-time measurement of X-ray beam properties.
• The novel readout scheme and detector design offer high precision and accuracy for beam characterization.
• This technology holds promise for advancing X-ray imaging and experimental analysis.