Paper |
Title |
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MOPVA044 |
Conditioning of the Power Couplers for the ESS Elliptical Cavity Prototypes |
957 |
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- C. Arcambal, P. Carbonnier, M. Desmons, G. Devanz, T. Hamelin, C. Marchand, C. Servouin
CEA/DRF/IRFU, Gif-sur-Yvette, France
- C. Darve
ESS, Lund, Sweden
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In the framework of the European Spallation Source (ESS), some power couplers have been designed and manufactured to supply, with RF power, the medium-beta (β=0.67) elliptical cavities of the cryomodule demonstrator. The power couplers work at 704.4 MHz and are tested up to 1.2 MW (repetition rate=14 Hz, RF pulse width close to 3.6 milliseconds). The CEA Saclay is in charge of the design, the manufacturing, the preparation and the conditioning of these power couplers. In this paper, after a general presentation of the power couplers used in the ESS LINAC and their characteristics, we give some détails about the manufacturing and then we describe the different steps of the preparation (cleaning), the assembly of the couplers on the coupling box in cleanroom, the baking of the couplers and the conditioning procedure. Finally, the experimental results obtained in travelling and standing waves on the first pairs of couplers will be shown.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPVA044
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THPIK005 |
RF Conditionning of the Spiral 2 CW RFQ |
4114 |
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- O. Piquet, Y. Lussignol
CEA/DSM/IRFU, France
- M. Desmons, A.C. France, P. Galdemard
CEA/IRFU, Gif-sur-Yvette, France
- M. Di Giacomo, R. Ferdinand, J.-M. Lagniel
GANIL, Caen, France
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The SPIRAL2 RFQ is designed to accelerate light and heavy ions with A/Q from 1 to 3 at 0.73 MeV/A. The nominal beam intensities are up to 5 mA CW for both proton and deuteron beams and up to 1 mA CW for heavier ions. The four-vane cavity is made with 5 1-meter long sections mechanically assembled, it works at 88 MHz and is powered up to 180 kW CW to achieve the nominal vane voltage of 113.7 kV for A/Q = 3 ions. This paper describes the RF conditioning of the RFQ at GANIL with the setting of its RF systems and cooling system used to tune the cavity resonance frequency.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-THPIK005
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Export • |
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※ LaTeX,
※ Text/Word,
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