X-ray Transfocators based on compound refractive lenses are very flexible and powerful focusing/collimating devices. In terms of the conditions of use of the Transfocators, there are two constructive solutions: In-air and In-vacuum. The In-vacuum Transfocators benefit from being closer to the X-ray source where it captures a larger proportion of the diverging X-ray beam.
In terms of lenses switching type, there are two main approaches: discrete-type lenses switching and binary-type lenses switching. The discrete-type lenses switching, referred to as the single-lens approach, allows the implementation of moving lenses one by one independently providing a smooth variation of foci and predictable focal positions. In the case of binary type lens switching, the lenses are inserted into the beam by means of pneumatically driven cartridges containing a geometric progression of numbers of lenses between two and 254 lenses (in steps of powers of two).
There are three main options for the mechanical design of X-ray Transfocators:
- Ultra-Compact Transfocator (UCTF) with discrete-type lenses switching
- In-vacuum Transfocator (IVTF) with binary-type lenses switching
- In-vacuum Transfocator with water cooling system (IVTF+)
All basic parameters of the devices can be changed depending on the specific task of their use. For example, Ultra-Compact Transfocator can be manufactured in the In-vacuum version and equipped with a water cooling system to ensure stable operation when the device is used under vacuum conditions. The number of lenses can be changed at the customer’s request.