Design, fabrication of racks, towers, pipe supports and installation on site

The project involves a vacuum system which will house the assembled high-power rotating mirrors of the 1 petawatt, 30 J, 30 fs, 10 Hz, 820 nm, ELI L3 laser. The laser will be guided from the beam distribution entrance to the experimental areas entirely in vacuum, with up to 18 mirrors, for a distance of up to 107 meters.

The 22 mirror chambers were mounted on extremely rigid and low-vibration frames, towers (up to 7000 kg) and granite blocks (up to 4500 kg). The tube supports were mounted upright and in suspended position. To guarantee maximum rigidity, all wall and floor connections of the frames, towers, granite blocks and pipe supports are grouted with a special mortar. All steel components are painted with ISO7 cleanroom compatible paint and were subsequently cleaned and packaged for ISO7 cleanroom class.

We are looking forward to your inquiries

Im Spätsommer 2020 unternahmen wir die ersten Schritte um auf großen Teilen unseres Firmengeländes eine Heimat für heimische Vogelarten, Kleintiere und vor allem Insekten zu erschaffen.

Wir pflanzten über 200 Stauden, etliche Heckengehölze und es wurden einige Meter Totholz und Steine herbeigekarrt und zu einer ansehnlichen Insektengroßstadt aufgeschichtet.

Danach hieß es einfach nur abwarten und nichts tun. Vor allem nicht mähen!

Schon nach wenigen Monaten zeigt sich nun eine bunte Vielfalt an Wiesenblumen und Wildkräutern.

Auch die ersten Bewohner sind bereits eingezogen.

Weitere Informationen zu dieser Kampagne finden Sie hier:  Naturschutzkampagne Hessen

Our IBF 5 represents a milestone in our company history. The use of our new RF 5 µB ion beam source with a smallest tool size of 40µm at ablation rates >40nm/s opens up new fields of application in micro-optics. Maintenance intervals of 2000 hours enable long-term machining, which is indispensable for mold array production. Due to the small tool size, the highest demands are placed on positioning accuracy and dynamics.

Easy operation is ensured by specially developed precision sensors in vacuum design inside the process chamber: A confocal sensor, a video microscope and a micro-faraday cup as system reference ensure that the tool has a maximum offset of <1µm in relation to the workpiece.

For more informations click here: ion beam technology

The Faraday cup is used to measure the current of an ion or electron beam and follows a very simple principle. The charged particles hits an electrically insulated metal body, the charge is conducted to ground via an ampere meter, and the beam current can thus be measured. In detail, however, some side effects have to be taken into account. In the case of high-intensity beams, efficient cooling must prevent the destruction of the cup. High-energy beams have a large penetration depth into the material, which must be taken into account when designing the material thickness. An aperture system uses a high voltage to push back charged secondary particles that falsify the measurement result. Pair production has been taken into account with electrons. NTG has a special understanding of the design taking all these effects into account and offers customised solutions for the most diverse applications like with all of our beam diagnostic tools.

In addition to feasibility studies and process developments, we also carry out IBF contract machining in our laboratory. An IBF200 and in future also an IBF500 are available for this purpose, so that workpieces up to 500mm can be machined. For topography or wavefront measurement, we have a Zygo interferometer with the following objectives: 6″ (plane, f2.2), 4″ f0.75, 25mm f0.58. Of course, customer data can also be used, in which case machining is carried out as “blind” IBF processing.

The picture shows an example of a Zerodur plate. The challenge was to machine 100% of the surface on a best-effort basis. For this purpose, the optics was glued onto a standard holder of the IBF system. To achieve the best possible result, the machining was carried out in two stages: A machining with ~7mm ion beam cross-section to correct the astigmatism and a readjusted fine correction with 2mm. The topography could be improved from PV ~l/5, RMS ~l/25 to PV <l/140, RMS ~l/1700. More info:

For further informations click here: Ion beam figuring