SRF2015 - List of Authors (Berry, S.)

Paper	Title	Page
MOPB118	Cleanliness and Vacuum Acceptance Tests for the UHV Cavity String of the XFEL Linac	452
	S. Berry, O. Napoly, B. Visentin CEA/DSM/IRFU, France C. Boulch, C. Cloué, C. Madec, T. Trublet CEA/IRFU, Gif-sur-Yvette, France D. Henning, L. Lilje, A. Matheisen, M. Schmökel DESY, Hamburg, Germany
	The main linac of the European XFEL will consist of 100 accelerator modules, i.e. 800 superconducting accelerator cavities operated at a design gradient of 23.6MV/m. In this context CEA-Saclay built an assembly facility designed to produce one module per week, ready to be tested at DESY. The facility overcame the foreseen production rate. We would like to highlight and discuss the critical fields: cleanliness and vacuum. A new assembly method to protect final assembly against particulates contamination has been implemented on the production line. Impact on cryomodule RF test is presented. Particle transport measurements on components used for the European XFEL accelerator module are presented. The results indicate that the nominal operation of the automated pumping and venting units will not lead to particle transport. Vacuum acceptance tests are of major interest: leak tests and residual gas analysis (RGA) are used to control the absence of air leak and contamination. The RGA specifications have been slightly relaxed to ensure the production rate.
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TUPB007	Progress in the Elliptical Cavities and Cryomodule Demonstrators for the ESS LINAC	544
	F. Peauger, C. Arcambal, S. Berry, N. Berton, P. Bosland, E. Cenni, J.-P. Charrier, G. Devanz, F. Éozénou, F. Gougnaud, A. Hamdi, X. Hanus, P. Hardy, V.M. Hennion, T. Joannem, F. Leseigneur, D. Loiseau, C. Madec, L. Maurice, O. Piquet, J. Plouin, J.P. Poupeau, B. Renard, D. Roudier, P. Sahuquet, C. Servouin CEA/DSM/IRFU, France C. Darve, N. Elias ESS, Lund, Sweden G. Olivier IPN, Orsay, France
	The European Spallation Source (ESS) accelerator is a large superconducting linac under construction in Lund, Sweden. A collaboration between CEA Saclay, IPN Orsay and ESS-AB is established to design the elliptical cavities cryomodule of the linac. It is foreseen to build and test two cryomodule demonstrators within the next two years. We present the design evolution and the fabrication status of the cryomodule components housing four cavities. The latest test results of two prototype cavities are shown. The cryomodule assembly process and the on-going testing infrastructures at CEA Saclay are also described.
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Paper

Title

Page

Cleanliness and Vacuum Acceptance Tests for the UHV Cavity String of the XFEL Linac

452

S. Berry, O. Napoly, B. Visentin
CEA/DSM/IRFU, France
C. Boulch, C. Cloué, C. Madec, T. Trublet
CEA/IRFU, Gif-sur-Yvette, France
D. Henning, L. Lilje, A. Matheisen, M. Schmökel
DESY, Hamburg, Germany

The main linac of the European XFEL will consist of 100 accelerator modules, i.e. 800 superconducting accelerator cavities operated at a design gradient of 23.6MV/m. In this context CEA-Saclay built an assembly facility designed to produce one module per week, ready to be tested at DESY. The facility overcame the foreseen production rate. We would like to highlight and discuss the critical fields: cleanliness and vacuum. A new assembly method to protect final assembly against particulates contamination has been implemented on the production line. Impact on cryomodule RF test is presented. Particle transport measurements on components used for the European XFEL accelerator module are presented. The results indicate that the nominal operation of the automated pumping and venting units will not lead to particle transport. Vacuum acceptance tests are of major interest: leak tests and residual gas analysis (RGA) are used to control the absence of air leak and contamination. The RGA specifications have been slightly relaxed to ensure the production rate.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)

TUPB007

Progress in the Elliptical Cavities and Cryomodule Demonstrators for the ESS LINAC

544

F. Peauger, C. Arcambal, S. Berry, N. Berton, P. Bosland, E. Cenni, J.-P. Charrier, G. Devanz, F. Éozénou, F. Gougnaud, A. Hamdi, X. Hanus, P. Hardy, V.M. Hennion, T. Joannem, F. Leseigneur, D. Loiseau, C. Madec, L. Maurice, O. Piquet, J. Plouin, J.P. Poupeau, B. Renard, D. Roudier, P. Sahuquet, C. Servouin
CEA/DSM/IRFU, France
C. Darve, N. Elias
ESS, Lund, Sweden
G. Olivier
IPN, Orsay, France

The European Spallation Source (ESS) accelerator is a large superconducting linac under construction in Lund, Sweden. A collaboration between CEA Saclay, IPN Orsay and ESS-AB is established to design the elliptical cavities cryomodule of the linac. It is foreseen to build and test two cryomodule demonstrators within the next two years. We present the design evolution and the fabrication status of the cryomodule components housing four cavities. The latest test results of two prototype cavities are shown. The cryomodule assembly process and the on-going testing infrastructures at CEA Saclay are also described.

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reference for this paper to ※ BibTeX, ※ LaTeX, ※ Text, ※ RIS/RefMan, ※ EndNote (xml)