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Test results for new type of accelerator structure published


In collaboration with the GSI Helmholtzzentrum für Schwerionenforschung, physicists and engineers of the Helmholtz Institute Mainz and Goethe University Frankfurt have conducted successful tests for a new type of accelerator structure: a new design for a superconducting CH-cavity (crossbar H-mode cavity) has now been tested with an ion beam from the GSI High Charge State Injector.

This is a key step toward the proposed superconducting (continuous-wave) linear accelerator (cw linac), which has the potential to open up new prospects for research with its continuous particle beam. The researchers have now reported on their results in the scientific journal “Physical Review Accelerators and Beams” (PRAB).

The demonstrator of the continuous-wave linac was studied in a test environment at the GSI Helmholtzzentrum. During this study, argon ions were injected into the new accelerator structure and accelerated. The test module consisted of a CH-cavity surrounded by two superconducting high-field magnets. Dr. Winfried Barth, head of the development team for the cw linac, describes the new design of the CH cavity as groundbreaking and summarizes the successful test by saying: “With the demonstrator of the cw linac, we have attained full particle acceleration up to the desired beam energy. With an acceleration voltage of 4.0 megavolts, the demonstrator accelerated a heavy-ion beam with an intensity of 1.5 particle microamperes to the target energy over a distance of only 70 centimeters.” The result confirms the effectiveness and capabilities of the new design of the CH cavity.

A continuous particle beam from the proposed continuous-wave linac is of interest for the generation and study of new chemical elements, and for experiments from the field of materials research that could also profit from the continuous beam of the proposed new linac. (BP)

Further Information:

Scientific publication in Physical Review Accelerators and Beams

The development team
The research team in front of the demonstrator, from left to right: Maksym Miski-Oglu, Winfried Barth, Alexander Schnaase, Stephan Yaramyshev, Victor Gettmann, Manuel Heilmann and Florian Dziuba.
Photo: G. Otto/GSI