THAOR05
DESY, Hamburg, Germany
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THAOR05 |
Superconducting Material for European XFEL Resonators | |
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| Ca. 20 t. of high purity niobium for European XFEL superconducting resonators will be provided by DESY to the cavity producers. Work on material for XFEL cavities is divided into three phases (prototyping, pre-series and series production). Procurement of material as semi-finished products for serial XFEL cavities includes: incoming dimensional control, eddy current scanning of the sheets, testing for required parameters (RRR, interstitial impurity analysis, metallic impurities analysis, metallography, tensile test, hardness, dimensional check and surface roughness), documentation using the DESY EDMS and delivery to companies. Material for 800 cavities is contracted to four previously qualified companies (Ningxia OTIC, Plansee Metal GmbH, Tokyo Denkai and W.C. Heraeus). Appropriate infrastructure and logistic for guiding through more than 20.000 of semi-finished products have been build up and the work flow worked out. More than 50% of cavity material is delivered to cavities vendors up to now. Niobium sheets with flaws, detected by eddy current scanning, sorted out and checked for foreign material inclusions and another sorts of defects. Several type of foreign material detected, a feedback is given to companies. | ||
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Slides THAOR05 [5.629 MB] | |