Electron Beam Welder

• Sciaky 60 kV, 1-700 mA, seven axis machine
• 68” x 68” x 84” h stainless steel chamber
• Clean vacuum system: 600 CFM Stokes/Roots blower backing a 16,000 l/s cryopump, capable of 5 x 10-5 torr in less than 10 minutes, baseline pressure 1 x 10-6 torr.
• Low vapor pressure lubricants
• Located within a Class 10,000 cleanroom

Experience

• Niobium full penetration welds 0.005” to 0.75”
• Over 1200 Nb parts fabricated for CEBAF construction
• Prototype Nb cavities for SNS and RIA
• 16 seven-cell cavities for CEBAF and FEL upgrade cryomodules
• 14 seven-cell cavities for the 12 GeV Upgrade prototype cryomodule
• Numerous R&D cavities for JLab and collaborators
• Stainless steel (304 & 316) 0.010” to 0.875”
• Copper, aluminum, titanium, tungsten, alloys