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Riber announces new tech for UHV power feedthroughs


New design for ultra-high vacuum component reduces the number of welds thanks to the use of one-piece parts

MBE company Riber is announcing the development of a new technology for one of its critical ultra-high vacuum (UHV) components.

Power feedthroughs are an essential part of UHV components such as MBE effusion cells or manipulators. These feedthroughs make it possible to connect cables outside the component in ambient air to bring electrical power to the internal heating filament, which is under UHV conditions.

As interfaces between UHV and ambient conditions, feedthroughs must have a very good leak-tightness to enable high speed pumping of the chamber and to keep UHV condition. They also must be mechanically robust in order to avoid any failure, which would lead to leaks.

Riber’s new design of its UHV power feedthrough reduces the number of welds thanks to the use of one-piece parts and in an adapted design of this one-piece parts (rounder corner).

This innovation has been installed for more than 6 months onto all Riber components requiring power feedthroughs.

Francesco Castelli, Riber’s quality and after-sales manager, says: ”We are really glad to propose this innovation to our customers. We see it as a continuation of our long-standing tradition in UHV innovation. Not only we have increased internally our quality level, but we also have improved a component regularly manipulated by our customers. This limits the risk of MBE equipment failure during use. We’re also very pleased as we have noticed that this superior performance provided leads to improved static vacuum in Riber’s MBE reactors when we perform our factory acceptance tests.”

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