SLAC National Accelerator Laboratory, operated by Stanford University for the Department of Energy, is inviting proposals for a BL18 In-Vacuum Undulator. This is a management and operating contractor subcontract, not a federal procurement, though certain federal laws and regulations may apply. The requirement specifies a U.S. domestic end item source. Interested vendors must submit a full proposal in accordance with the attached RFP preparation requirements and provide required documentation to Ryan Enos.