High energy CT or XXL-CT

Fraunhofer EZRT, together with its partners, has developed a system to test large objects such as entire vehicles or items with difficult material properties. The combination of inventive spirit, years of experience in X-ray technology, highly-precise mechanical engineering, and powerful hardware and software makes it possible to test final-assembled products and analyze them specially down to the nearest millimeter.

System solution XXL-CT

In the 400 m², 14-meter-high test hall, two eight-meter high manipulation towers, a turntable three meters in diameter, three X-ray sources weighing several metric tons, and two detectors are installed. On top of these are a four-meter-long line detectors for detecting larger structures and a smaller surface detector with very fine resolution.

The objects, which are positioned on the turntable using a crane, are scanned and captured line by line in an automated manner while being turned on their own axis. The level of radiation can be varied depending on the material, size, and wall thickness of the object.

  • Automotive – complete vehicles, engine blocks
  • Safety & security – air and sea freight containers
  • Aerospace – aircraft fuselage, carbon-fiber materials
  • Energy – turbines, rotor blades
  • Recycling – waste containers
  • Transport – engines for ships and trains

Siemens Industrial Linear Accelerator (SILAC ®)

Radiation energy max. 9 megaelectron volts
W/H/L (in m) 2/2/1
Focal spot size approx. 3 mm
Radiolucent material thickness

max. 10 cm (high density)

over 60 cm (low density)

Weight approx. 3 t


Line detector

Size 4 m (length)                                  
Number of pixels approx. 10 000 px / 2048 px
Voxel size / spatial resolution 400 µm / 200 µm
Recognizable structure size 800 µm - 400 µm



Diameter 3 m
Load capacity
max. 10 t
Object dimensions (W/H/L in m)                    

12/10/5 for partial scan

3.2/5/3.2 for full scan

Roatation speed
5° per second

Advantages and customer value

  • Defect analysis: Detection of cavities, pores, cracks, or delaminations
  • Quality and assembly check: Correctness and completeness of the assembly of components, cabling or (welded/adhesive/plug) connections.
  • Safety check: Foreign bodies or illegal or dangerous goods