This notice is issued by The SLAC National Accelerator Laboratory, located in Menlo Park, California. We are soliciting responses from interested parties to provide all personnel, materials, equipment, facilities and services required to complete engineering, design, documentation, fabrication, assembly, installation and acceptance testing of a double crystal offset monochromator for the X-ray Correlation Spectroscopy (XCS) Instrument. To be qualified, vendors must demonstrate past successful delivery of an x-ray monochromator. The XCS double crystal monochromator will be used to provide monochromatic photons to the XCS interaction point. The parallel offset of the monochromatic beam from the input beam is a fixed 600 mm. In order to deliver photon energies for 4 keV to 25 keV, the monochromator must be capable of switching between two pairs of crystals, Si (111) and Si (220). In addition, the first crystal must be capable of moving out of the path of the incoming beam, allowing the un-deflected white beam to propagate straight through the monochromator vacuum chamber to be used in other photon experiments. In order to minimize longitudinal beamline length, the both the upstream and downstream mirrors must move along the beam path for energy selection, the crossing point is then fixed. A pop-in x-ray position/intensity detector must be included at the crossing point to facilitate x-ray energy selection. The completed monochromator must include a vacuum enclosure capable of maintaining UHV and a stable alignment support. The nominal beam height is 1.4 m above a concrete floor. Vendors interested in performing this requirement are invited to provide the following information to SLAC Purchasing Office no later than 23 July 2009. The information may be submitted via email to the Contract Administrator at [email protected]. Responses shall include the following information: Reference number XCSMONO-BIS-00001, Company name, DUNS Number, address, point of contact, phone number and email address; business size, disadvantage, 8(a), or HUBzone status; and , Evidence that the contractor has performed similar projects (past performance history). NO TELEPHONE OR WRITTEN REQUESTS FOR SOLICITATIONS OR POSTING STATUS. This posting is for information and planning purposes and is not to be construed as commitment by SLAC nor will SLAC pay for information solicited. No basis for claim against SLAC shall arise as a result from a response to the Sources Sought or SLAC use of any information provided. SLAC reserves the right to consider a small business, 8(a) or any other set aside arrangement as deemed appropriate for this procurement.

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