SLAC National Accelerator Laboratory, operated by Stanford University for the DOE, seeks quotations for one imaging-grade digital X-ray detector plus a matching power supply, cables, frame grabber, and connectors, with no on-site services permitted. The detector must support hard/high-energy X-ray diffraction greater than 20 keV and meet minimum 40 cm x 40 cm active area, 150 micron pixel size, amorphous silicon sensor, and flat-panel configuration. Award will be based on lowest priced technically acceptable and best lead time, resulting in a fixed-price purchase order under SLAC terms; Buy American Act certification applies to awards over $15,000 unit price. Suppliers must complete required representations and certifications, register in SAM, and provide HTS/ECCN and duty/tariff treatment if applicable. Payment terms are NET-30; domestic freight is FOB Destination Prepaid and Add, while foreign shipment is CIP SLAC, Menlo Park, Duty Unpaid.