IµS DIAMOND - Simply Brilliant
Principle of the diamond hybrid anode used in the air-cooled IµS DIAMOND
The IµS DIAMOND
In our IXT tube development team at Incoatec, we have combined more than 60 years of experience in designing and manufacturing industrial and medical X-ray sources. The latest development of Incoatec’s X-ray tube factory is a new microfocus sealed tube with a unique anode technology, the diamond hybrid anode. The IµS DIAMOND establishes a new class of X-ray sources, combining an intensity output that exceeds the intensity of a microfocus rotating anode with all the comfort of a standard IµS with a bulk Cu anode.
The Diamond Hybrid Anode Technology
The diamond hybrid anode comprises a bulk industrial diamond that is coated with a layer of the target material (e.g. Cu) which determines the K energy of the X-rays produced. It takes advantage of the higher thermal conductivity of diamond (below 800 K), compared to bulk Cu anodes, making the heat dissipation in a diamond hybrid anode more efficient. Consequently, the IµS DIAMOND can accept a higher power density in the focal spot on the anode without damaging the surface of the target layer, resulting in a superb intensity.
The IµS DIAMOND Performance
It is well established that microfocus rotating anodes lose about 20-30% of their initial intensity within the first 1000 h of operation time, with a significant drop in intensity in the very first few 100 hours. This is due to the repeated cycling of the temperature on the surface of the rotating anode target, which happens several million times per day as the anode usually spins at 10000 r.p.m. This thermal stress leads to micro-cracks in the surface of the anode, which causes an increased roughening of the surface of the bulk anode and a reduction in the intensity output due to an increased self-absorption of the X-rays.
In the IµS DIAMOND, however, a balanced heat management assures that the intensity loss over time is only a few percent over 10,000 h of full power operation, which is significantly lower than in microfocus rotating anode sources. Consequently, the intensity of the IµS DIAMOND is about 20% higher than the average output of a modern microfocus rotating anode.
The IµS DIAMOND, therefore, establishes a new class of X-ray sources, combining an intensity output that exceeds the average intensity of a microfocus rotating anode with all the comfort of a standard air-cooled microfocus sealed tube.