| Paper |
Title |
Page |
| THPB023 |
The Statistics of Industrial XFEL Cavities Fabrication at E.ZANON |
1119 |
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- A. Gresele, M. Giaretta, A. Visentin
Ettore Zanon S.p.A., Nuclear Division, Schio, Italy
- A.A. Sulimov, J.H. Thie
DESY, Hamburg, Germany
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Serial production of superconducting cavities for European-XFEL will be completed at E.ZANON by the end of 2015. For that reason we can summarize the results and present the statistics of industrial cavity fabrication. Many parameters have been traced during different steps of cavity production. The most interesting of them, as cavity length, frequency, field flatness and eccentricity, are presented and discussed.
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Poster THPB023 [3.227 MB]
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| THPB035 |
Fabrication of the 3.9 GHz SRF Structures for the European XFEL |
1162 |
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- P. Pierini, M. Bertucci, A. Bosotti, J.F. Chen, P. Michelato, L. Monaco, M. Moretti, R. Paparella, D. Sertore
INFN/LASA, Segrate (MI), Italy
- A. Gresele
Ettore Zanon S.p.A., Nuclear Division, Schio, Italy
- C.G. Maiano, P. Pierini, E. Vogel
DESY, Hamburg, Germany
- C. Pagani
Università degli Studi di Milano & INFN, Segrate, Italy
- M. Rizzi
Ettore Zanon S.p.A., Schio, Italy
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One batch of 10 cavities has been completed and eight structures have been installed in the 3.9 GHz cryomodule for the European XFEL Injector operation. A second batch of 10 RF structures for a spare injector module is under fabrication. The fabrication has been performed according to the European Pressure Vessel regulations, as needed for the EXFEL operation. This paper describes the fabrication, quality control/assurance procedures and frequency preparation steps in order to achieve cavities at the correct frequency and length within the specifications.
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| THPB068 |
Practical Aspects of HOM Suppression Improvement for TM011 |
1277 |
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- A.A. Sulimov, A. Ermakov, J.H. Thie
DESY, Hamburg, Germany
- A. Gresele
Ettore Zanon S.p.A., Nuclear Division, Schio, Italy
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Some Higher Order Modes (HOM) pass bands were controlled during cryo-tests at DESY for the European XFEL cavities. The second monopole mode (TM011) showed most instabilities and suppression degradation. The authors will explain this phenomenon on the example of cavity CAV00553 and present the practical method of TM011 damping improvement.
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Poster THPB068 [0.182 MB]
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