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Träfflista för sökning "WFRF:(Wedberg Rolf) srt2:(2019)"

Sökning: WFRF:(Wedberg Rolf) > (2019)

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1.	Li, Han, et al. (författare) RF Performance of the spoke prototype cryomodule for ESS 2019 Rapport (övrigt vetenskapligt/konstnärligt)abstract The European spallation source (ESS), as a world-class high power proton accelerator facility, will be the first one to adopt 26 double spoke resonators (DSR) at its low energy section. As a new superconducting accelerating structure, these DSRs are therefore considered as a key technology and challenge of the whole project. They will be the first D SRs in the world to be commissionedfor a high power proton accelerator. As a milestone, the first DSR prototype cryomodule for ESS project was successfully tested at the FREIA Laboratory. In this qualification of the prototype cryomodule, the whole chain of RF station, RF distribution, fundamental power coupler (FPC), DSRs, cold tuning system (CTS) and low level radio frequency (LLRF) system, as well as the testing procedure have been verified on preparation for the industrialized cryomodules. Both cavities in the prototype cryomodule achieved nominal accelerating gradient, with the maximum gradient of 15 MV/m and 10.5 MV/m for cavity 1 and cavity 2 respectively. Based on the calorimetrical method, the dynamic heat load measurement showed that the cavity power consumption is around 0.5 W and therefore the intrinsic quality factor is consistent with the vertical test. This report presents the test configuration, RF conditioning history and first high power performance of this cryomodule.
2.	Ruber, Roger, et al. (författare) 400 kW RF Stations Operational Experience : Overview of the operation experience during 2018-2019 with the Itelco-Electrosys and DB Science stations at the FREIA Laboratory 2019 Rapport (övrigt vetenskapligt/konstnärligt)abstract We present the operational experience with the Itelco-Electrosys and DB Science 400 kW RF stations installed at the FREIA Laboratory. From the summer of 2018 to the summer of 2019 the stations were used for the test of the spoke cryomodule prototype for ESS. Unfortunately multiple issues with both RF stations delayed or inhibited normal operation. The Itelco-Electrosys station was out-of-operation from October 2018 to June 2019, due to multiple issues, which took a long time to understand and solve.

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Typ av publikation: rapport (2)

Typ av innehåll: övrigt vetenskapligt/konstnärligt (2)

Författare/redaktör: Ruber, Roger (2); Wedberg, Rolf (2); Dancila, Dragos (1); Li, Han (1); Fransson, Kjell (1); Eriksson, Johan (1); visa fler...; Santiago-Kern, Rocio (1); Gajewski, Konrad (1); Hermansson, Lars (1); Lofnes, Tor (1); Hoang, Long (1); Miyazaki, Akira, 198 ... (1); Peterson, Tord (1); visa färre...

Lärosäte: Uppsala universitet (2)

Språk: Engelska (2)

Forskningsämne (UKÄ/SCB): Naturvetenskap (2)

År: 2019 (2)Ta bort avgränsningen

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