National Institute of Standards & Technology, Acquisition & Assistance Div.,100 Bureau Drive Stop 3572, Bldg. 301, Rm B117, Gaithersburg, MD 20899-3572

44 -- NEUTRON GUIDES SOL 52SBNB0C1026 POC Joan Smith (301) 975-6458 WEB: NIST Contracts Homepage, http://www.nist.gov/admin/od/contract/contract.htm. E-MAIL: NIST Contracts Office, Contract@nist.gov. The U.S. Department of Commerce, National Institute of Standards and Technology (NIST), Center for Neutron Research (NCNR) has a requirement for the fabrication of neutron guides for its research facility. The requirement is for the supply of neutron guides of varying cross-sections and lengths, fabricated of different materials and coated with different elements. Guide materials are required to be "bokron" glass, float glass, or silicon; the coatings are required to be Ni-58 or its equivalent, or coatings providing at least two times the critical angle of reflection of normal Ni. All guides are required to be furnished with external mirrors for alignment (autocollimation). Specific requirements are: (1) Construction -- All guide elements are to be machined and glued according to the Government's specifications; (2) Reflectivity -- All guides made with Ni-58 or its equivalent are required to possess a reflectivity of at least 99 percent (average value between zero and the critical angle). All guides made with critical angles twice, or greater, than that of normal nickel are required to have a reflectivity greater than 95 percent (average value between zero and the critical angle). The corresponding substrates shall be polished to provide the required reflectivities; (3) Stability -- The coatings are required to show no degradation in performance (critical angle and reflectivity) in temperatures up to 100 degrees Centigrade, or in radiation fields (neutron and gamma) to which the neutron guides are typically exposed; and (4) Adhesion -- The coatings are required to be permanently bonded to the glass substrates with sufficient adhesion to resist removal by Scotch tape (3M brand) #810). -- The Government anticipates the award of an indefinite delivery indefinite quantity, fixed price contract with a maximum order limitation of $350,000 for the life of the contract. -- The period of performance is for twelve months with two twelve month option periods to renew. -- A Request for Solicitation (RFP) package is not available. -- It is the Government's intent to negotiate with Compagnie Industriele des Lasers (CILAS), France, the only responsible source that can satisfy the agency's requirements. -- See Number Note 22 and 26. ***** Posted 01/04/00 (W-SN412851). (0004)

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