The design of this special machine was created in our design department, in close cooperation with our customer. Due to the complexity of this handling system, close cooperation with the customer is absolutely essential, so that the knowledge required for the production process can flow directly into the design.

The system consists of a 3D axis system, a precise adhesive dispensing unit and vacuum plates. The process control unit was programmed and optimised by us in accordance with the customers’ specifications.

Kreß GmbH has developed new electrode stems and tuning plates for a new generation of RFQ accelerators for high-performance applications with high beam currents and RF continuous operation (CW). These stems and tuning plates have already been used in the proton RFQ which Kreß GmbH built for the LANSCE project in the Los Alamos National Laboratory.

Calculations with CST Microwave Studio and ANSYS at the Los Alamos National Laboratory have shown that the new tuning plates ensure an excellent electrical and thermal contact between the tuning plates and stems. In addition on this new system, no forces have an effect on electrode stems. With conventional systems these can have a negative effect on the electrode geometry and on the beam dynamics.

The design of the tuning plates is the intellectual property of Kreß GmbH and is protected as a registered design.

Customers

• Los Alamos National Laboratory

This 4-rod RFQ will be used for accelerating protons in the injector for the LANSCE accelerator at the Los Alamos National Laboratory (LANL). The RFQ will replace a 40 year old Cockcroft-Walton accelerator. The calculations of the electric field distribution, the beam dynamics and the thermal loads were carried out by Goethe University and LANL. The mechanical design and the CAD design was carried out on our premises, working closely with both institutions. The RFQ accelerator was fully manufactured in our workshop. Carrying out all production steps in just one production operation guarantees the required high level of quality.

The galvanic copper plating of the stainless steel tank was carried out by Galvano-T, a specialist company qualified to carry out this work.

Customers

• Los Alamos National Laboratory, USA

Data

• Resonance frequency: 201.25 MHz
• Particle energy: 35 – 750 MeV/u
• Electrode voltage: 50 kV
• Length: 2000 mm
• Cross section: 400 x 420 mm