VEBTVS100 for ELI-NP

This project included the design, fabrication, on-site installation and commissioning.

In this case it involves a system to redirect and focus 100-TW-laser-beams.

It consists of two large, height-adjustable rectangular chambers – one of them heatable for a final pressure of ≤ 1 * 10-8 mbar – five round height-adjustable turning boxes, breadboards for each chamber which are mechanically isolated and independently adjustable in height, beam tubes for connecting the chambers, various vacuum gate valves as well as an entire vacuum system including a pre-vacuum system and a control and monitoring unit for the machine.

Inside are mirrors, which are installed in micrometer-precise positioning systems (translation and rotation) and directed to various experimental devices (target systems, diagnostics for laser beam and generated radiation characterization).

If you enjoy scientific subjects such as mathematics and physics, are talented in both computer technology and craftsmanship, and have a desire to work independently, then the cutting machine operator apprenticeship is worth a closer look.

Our company is active in the high-tech sector, which is why we place great emphasis on careful and precise work right from the beginning, as our focus is on offering our apprentices a long-term employment opportunity.

We offer you a positive and pleasant working atmosphere, which is based on willingness to help, team spirit and direct, respectful communication – these are the qualities we expect you to have as well.

The regular apprenticeship lasts 3.5 years. With very good performance, it can be shortened to 3 years. The salary for the first year of the program is 997 € per month with an additional vacation and Christmas bonus.

You can find more information about the apprenticeship by clicking here: apprenticeship

If this article has aroused your interest, we look forward to receive your application under: info@ntg.de

Our latest generation of the IBF200 is specially designed for industrial series production of workpieces with a diameter of 200mm and a weight of 15kg. Likewise, components up to 300mm, depending on the process up to 350mm, can be machined by direct loading and associated longer pumping times.

Here you´ll find the PDF

A 24/7 operation with cycle times of 2-3 min allows high quantities even with small optics and shorter machining times. The tool change is semi-automatic, so that the process chamber no longer needs to be ventilated. Downtimes are thus reduced to a minimum. Average maintenance intervals of several 100 hours allow for targeted time planning. Furthermore, the processes can be defined to precisely defined target values (PV, RMS). An example is shown below, here the processing time can be halved.

The system is optionally available in a 3-axis or 5-axis configuration. This means that IBE or IBS processes can also be realised.

You can find further information on our homepage: IBF 200

We offer design, manufacturing, assembly and commissioning at customer’s site of machines and complete plants. We are not committed to any particular industry and are happy to listen to our customers’ ideas to examine the feasibility of the projects.

Furthermore, we offer feasibility studies in the area of ion beam processing. Customer-specific issues can be examined on our IBF laboratory facilities and manufacturing processes can be developed or optimized.

We hope this article has aroused your interest and look forward to your feedback. If you have any questions about an area, please feel free to contact us at and we will get back to you. info@ntg.de

NTG develops and manufactures components to complete the Wendelstein 7-X at the Max Planck Institute for Plasma Physics in Greifswald. In this experimental facility for researching nuclear fusion technology, built on the principle of the stellarator, plasmas are enclosed with superconducting coils and heated to 100 million degrees Celsius. All elements coming into thermal contact with the plasma must be cooled with water. This also includes the ports, a significant component group of the stellarator. The ports connect the plasma vessel with the outer vessel; via these accesses, the plasma is observed and supplied. To prevent the ports from heating up inadmissibly due to thermal radiation from the plasma, and thus the cryogenic chamber, they must be protected with water-cooled linings. These linings – a total of 86 so-called “portliners” – were developed, built and tested by NTG.

The technical challenge was the combination of high power input, tight tolerances and use in ultra-high vacuum. The cooling system is designed for a power input of 50 to 100 kW/m2 and operates according to the heat exchanger principle: The cold water runs in four millimeter-thin tubes, which in turn are located in eight millimeter-thick tubes. The water flows back in the space between these two pipes. This design allows the different geometries of the nozzle linings – round, rectangular or oval – to be shaped and manufactured precisely to fit the narrow installation spaces of 15 to 20 millimeters.