SRF2011 - List of Authors (Klinke, D.)

Paper

Title

Page

Material for European XFEL Resonators

460

W. Singer, S. Arnold, A. Brinkmann, J.A. Dammann, A. Ermakov, J. Iversen, D. Klinke, M. Lengkeit, W.-D. Möller, P. Poerschmann, X. Singer
DESY, Hamburg, Germany

Twelve different types of semi-finished products will be provided by DESY to producers of European XFEL superconducting resonators. Work on material for XFEL cavities is divided into three phases (prototyping, pre-series and series production). Two new companies (Ningxia OTIC and Plansee Metal GmbH) have been qualified as XFEL suppliers. Material is contracted to 4 companies (Ningxia OTIC, Plansee Metal GmbH, Tokyo Denkai and W.C. Heraeus). Procurement of semi-finished products includes: acceptance on producer’s site, eddy current scanning of the sheets, testing for required parameters (RRR, interstitial impurity analysis, metallic impurities analysis, metallography, tensile test, hardness HV, dimensional check, surface roughness), documentation using the DESY EDM-System, marking, delivery to companies. Semi-finished products for pressure bearing sub-components of cavities have to be fabricated according Pressure Equipment Directive 97/23/EC. Qualification of material and the certification of the material producers were done by a “notified body”. Appropriate infrastructure and logistic for guiding through more than 20.000 of semi-finished products has been build up.

Poster TUPO036 [2.332 MB]

TUPO048

Commissioning and Upgrade of Automatic Cavity Tuning Machines for the European Xfel

495

J.H. Thie, A. Gössel, J. Iversen, D. Klinke, G. Kreps, W.-D. Möller, C. Mueller, H.-B. Peters, A.A. Sulimov, D. Tischhauser
DESY, Hamburg, Germany
D. Bhogadi, R.H. Carcagno, T.N. Khabiboulline, S. Kotelnikov, A. Makulski, R. Nehring, J.M. Nogiec, W. Schappert, C. Sylvester
Fermilab, Batavia, USA

Four new tuning machines were developed and built in a collaborating effort among FNAL, KEK and DESY. Two machines were commissioned at DESY in a close teamwork with FNAL. For several months, these machines have been used regularly for the automatic tuning of different types of cavities for FLASH. Due to this operating experience and the requirements for the European XFEL cavity Specification, it was necessary to implement the following improvements: improve the precision of the eccentricity measurement; change the tuning sequence according to the different production stages in the cavity fabrication and preparation process; review and change the machine access procedures according to the safety aspects of the EC Directive of Machinery. These improvements required changes in both the mechanical parts developed by DESY and the electronics and software developed by FNAL. We report in detail about the commissioning, our tuning experience and the necessary improvements.

Poster TUPO048 [0.257 MB]

Paper	Title	Page
TUPO036	Material for European XFEL Resonators	460
	W. Singer, S. Arnold, A. Brinkmann, J.A. Dammann, A. Ermakov, J. Iversen, D. Klinke, M. Lengkeit, W.-D. Möller, P. Poerschmann, X. Singer DESY, Hamburg, Germany
	Twelve different types of semi-finished products will be provided by DESY to producers of European XFEL superconducting resonators. Work on material for XFEL cavities is divided into three phases (prototyping, pre-series and series production). Two new companies (Ningxia OTIC and Plansee Metal GmbH) have been qualified as XFEL suppliers. Material is contracted to 4 companies (Ningxia OTIC, Plansee Metal GmbH, Tokyo Denkai and W.C. Heraeus). Procurement of semi-finished products includes: acceptance on producer’s site, eddy current scanning of the sheets, testing for required parameters (RRR, interstitial impurity analysis, metallic impurities analysis, metallography, tensile test, hardness HV, dimensional check, surface roughness), documentation using the DESY EDM-System, marking, delivery to companies. Semi-finished products for pressure bearing sub-components of cavities have to be fabricated according Pressure Equipment Directive 97/23/EC. Qualification of material and the certification of the material producers were done by a “notified body”. Appropriate infrastructure and logistic for guiding through more than 20.000 of semi-finished products has been build up.
	Poster TUPO036 [2.332 MB]

TUPO048	Commissioning and Upgrade of Automatic Cavity Tuning Machines for the European Xfel	495
	J.H. Thie, A. Gössel, J. Iversen, D. Klinke, G. Kreps, W.-D. Möller, C. Mueller, H.-B. Peters, A.A. Sulimov, D. Tischhauser DESY, Hamburg, Germany D. Bhogadi, R.H. Carcagno, T.N. Khabiboulline, S. Kotelnikov, A. Makulski, R. Nehring, J.M. Nogiec, W. Schappert, C. Sylvester Fermilab, Batavia, USA
	Four new tuning machines were developed and built in a collaborating effort among FNAL, KEK and DESY. Two machines were commissioned at DESY in a close teamwork with FNAL. For several months, these machines have been used regularly for the automatic tuning of different types of cavities for FLASH. Due to this operating experience and the requirements for the European XFEL cavity Specification, it was necessary to implement the following improvements: improve the precision of the eccentricity measurement; change the tuning sequence according to the different production stages in the cavity fabrication and preparation process; review and change the machine access procedures according to the safety aspects of the EC Directive of Machinery. These improvements required changes in both the mechanical parts developed by DESY and the electronics and software developed by FNAL. We report in detail about the commissioning, our tuning experience and the necessary improvements.
	Poster TUPO048 [0.257 MB]