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| Contribution to a conference proceedings/Contribution to a book | GSI-2019-01084 |
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2019
JACoW Publishing, CERN
Geneva
The 19th International Conference on RF Superconductivity, DresdenDresden, Germany, 30 Jun 2019 - 5 Jul 2019 Geneva : JACoW Publishing, CERN 168-172 (2019) [10.18429/JACOW-SRF2019-MOP050]
Please use a persistent id in citations: doi:10.18429/JACOW-SRF2019-MOP050 doi:10.15120/GSI-2019-01084
Abstract: The HELmholtz LInear ACcelerator (HELIAC) is being developed by a collaboration of HIM, GSI and the Goethe University of Frankfurt. It is a superconducting (sc), continuous wave (cw) heavy ion linac that comprises novel Crossbar H-mode (CH) cavities. In April 2017 and November/December 2018 the first sc CH-cavity of the linac was tested with beam. The first operations of the cavity showed, that the prototype of the rf power coupler needs to be further improved. A new version of the coupler is being designed at the HIM. Further development will mainly be focused on the heat input into the cryostat caused by the coupler. Also the coupler will have a modular design. This improves the accessibility and maintenance of the coupler. Various cryogenic and rf tests are foreseen, to provide a reliable, fail-safe coupler for the HELIAC. For an enhanced coupler test stand a movable reflector has been designed and built. With its movable semi-reflective element, it allows to operate the test stand in a resonance mode. In addition, the movable reflector can vary the coupling factor. This contribution discusses the recent coupler R for the HELIAC.
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