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THE EUROPEAN X-RAY LASER PROJECT XFEL

XFEL Project Group Work Packages LINAC WP 4: SC Cavities  · 

WP-04: Super Conducting Cavities

• Cavity baking in-situ
• EP on cavities with tank
• Determination of electrical axis of cavity
• Check mechanical properties of niobium after 800C
• Define processes of cavity preparation and assembly
• Optimum EP parameters
• First 10 nine cell-preparations after EP + 800C + bake
• Material
• EP on half cells, dumb-bells
• Optimum stress annealing + hydrogen degassing temperature (600 – 1000C)
• Other cleaning techniques: Oxipolishing, BCP 1:1:10, etc
• Development of CO2 cleaning
• Cavity Production
• Work Package Leader: W. Singer (Desy) / P. Michelato (INFN)

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