Paper |
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MOPVA040 |
Status of the ESS Elliptical Cryomodules at CEA Saclay |
945 |
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- P. Bosland, C. Arcambal, F. Ardellier, S. Berry, A. Bouygues, A. Bruniquel, E. Cenni, J.-P. Charrier, C. Cloué, G. Devanz, F. Éozénou, T. Hamelin, X. Hanus, P. Hardy, C. Marchand, O. Piquet, J. Plouin, J.P. Poupeau, T. Trublet
CEA/DRF/IRFU, Gif-sur-Yvette, France
- G. Costanza
Lund University, Lund, Sweden
- C. Darve
ESS, Lund, Sweden
- P. Michelato
INFN/LASA, Segrate (MI), Italy
- G. Olivier
IPN, Orsay, France
- F. Peauger
CEA/DSM/IRFU, France
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The first ESS prototype cryomodule with medium beta cavities named M-ECCTD is being assembled at CEA Saclay. The Q curves of the 4 cavities mounted inside the cryomodule are presented, and the four power couplers have been conditioned at high power before their assembly onto the cavity string. Completion of the M-ECCTD assembly outside clean room is in progress as well as the finalization of the RF power test stand preparation. RF power tests of the M-ECCTD will be performed during summer 2017. CEA is preparing the production of the ESS medium and high beta cryomodules of the series before the test of the M-ECCTD and the contracts for the procurement of the most critical components have already been signed
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPVA040
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MOPVA041 |
Vertical Test Results on ESS Medium and High Beta Elliptical Cavity Prototypes Equipped with Helium Tank |
948 |
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- E. Cenni
CEA/IRFU, Gif-sur-Yvette, France
- P. Bosland, G. Devanz, F. Éozénou, X. Hanus, L. Maurice, F. Peauger, J. Plouin, D. Roudier, C. Servouin
CEA/DSM/IRFU, France
- G. Costanza
Lund University, Lund, Sweden
- C. Darve
ESS, Lund, Sweden
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The ESS elliptical superconducting Linac consists of two types of 704.42 MHz cavities, medium and high beta, to accelerate the beam from 216 MeV (spoke cavity Linac) up to the final energy at 2 GeV. The last Linac optimization, called Optimus+, has been carried out taking into account the limitations of SRF cavity performance (field emission). The medium and high-beta parts of the Linac are composed of 36 and 84 elliptical cavities, with geometrical beta values of 0.67 and 0.86 respectively. This work presents the latest vertical test results on ESS medium and high beta elliptical cavity prototypes equipped with helium tank. We describe the cavity preparation procedure from buffer chemical polishing to vertical test.
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DOI • |
reference for this paper
※ https://doi.org/10.18429/JACoW-IPAC2017-MOPVA041
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Export • |
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※ LaTeX,
※ Text/Word,
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