Darmstadt 2016 – wissenschaftliches Programm
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AKBP: Arbeitskreis Beschleunigerphysik
AKBP 11: Poster
AKBP 11.17: Poster
Mittwoch, 16. März 2016, 18:30–20:30, S1/05 22-24
Dipole Compensation of the 176 MHz MYRRHA RFQ — •Klaus Kümpel1, Holger Podlech1, Alexander Bechtold3, Chuan Zhang2, Christoph Lenz1, and Nils Petry1 — 1IAP University of Frankfurt, 60438 Frankfurt am Main, Germany — 2GSI Helmholzzentrum, 64291 Darmstadt, Germany — 3NTG Neue Technologien GmbH und Co KG, 63571 Gelnhausen, Germany
The MYRRHA (Multi-purpose hYbrid Research Reactor for High-tech Applications) Project is planned as an accelerator driven system (ADS) for the transmutation of long-living radioactive waste. For this project a cw 4-rod-RFQ with 176 MHz and a total length of about 4 m is required. It is supposed to accelerate protons from 30 keV up to 1.5 MeV*. One of the main tasks during the development of the RFQ is the very high reliability of the accelerator to limit the thermal stress inside the reactor. Another challenge was to compensate the dipole component of the MYRRHA-RFQ which is due to the design principle of 4-rod-RFQs. This dipole component is responsible for shifting the ideal beam axis from the geometrical center of the quadrupole downwards. Design studies with CST MICROWAVE STUDIO have shown that the dipole component can be almost completely compensated by widening the stems alternately so that the current paths of the lower electrodes are increased.