Naval Surface Warfare Center, Dahlgren Division, 17320 Dahlgren Road Dahlgren, VA 22448-5100

66 -- INSTRUMENTS AND LABORATORY EQUIPMENT SOL N00178-97-Q-0061 DUE 112796 POC Myrtis Josey, Purchasing Agent 540-653-4704. The Government intends to purchase on a sole source basis the following VALYN International Valyn Visar Model VLNL-04 Velocity Interferometer System. The Visar System shall include the following: (1) a fringe constant range from at least 100 to 1800 meters per second per fringe; (2) a push-pull (conjugate signal) system configuration; (3) a push-pull data reduction program for a PC; (4) a collimator and polarizing beamsplitter assembly for 1000 micrometer diameter fiber optic cable for reflected light for increased light efficiency; (5) a velocity measurement accuracy of plus or minus 2.0 meter per second or better; (6) one nanosecond or smaller risetime for photomultiplier units; (7) electrical power of 110 volts; (8) the system must contain a fifth photomultiplier unit (in addition to basic four units) to assist system data reduction by measuring the presence and amount of intense white light that may occur in some experiments; (9) size to permit optional mounting in standard 19 inch wide electronics rack; and (10) system designed to use 514.5 nanometer argon ion laser light. In addition to a complete visar, the system shall include the following: 2 rackmount kits for the power supplies, and an assembly for splitting the light beam from a fiber optic visar probe cable into 2 light beams for fiber optic input into 2 visar systems. A patent was granted on 2 January 1996 for a multi-etalon VISAR interferometer having an interferometer frame of high stiffness with a linear elongated slide bar. There is, also, a patent on the fiber optic probes. Because of these patents, VALYN Visars is the only system with adjustable VPF constant which is so small, portable and ease of use, and specifically designed for and used in shock-wave experiments. The Government requires this Visar System to replace an obsolete Visar which is used to measure shock properties of materials. At present, Valyn Visar probes are used for the real-time gas gun experiments and all target assemblies have been designed for the size and optical characteristics of this probe. Selection of a different Visar system and probes would mean the redesign and fabrication of new target assemblies. Award is to be made under Simplified Acquisition Procedures. All responsible sources shall provide manufacturer's specifications with their faxed quote by close of business 27 November 1996 which shall be considered by the Naval Surface Warfare Center, Dahlgren Division, Dahlgren, Virginia 22448-5100. Fax number is 540-653-2958, Attn: Myrtis Josey, Code SD18. THE GOVERNMENT SHALL NOT ISSUE A WRITTEN QUOTE AS ALL ITEMS ARE CALLED OUT IN THIS CBD NOTICE. This procurement will be awarded on an all or none basis. All items shall be shipped FOB Destination to the Naval Surface Warfare Center, Dahlgren Division, Dahlgren, VA 22448-5100. Anticpate award to be made by 4 December 1996 with delivery by 6 January 1997. (0312)

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