NASA/George C. Marshall Space Flight Center, Procurement Office, Marshall Space Flight Center, AL 35812

66 -- ELECTRON-IMPACT HIGH FLUX X-RAY GENERATOR SYSTEM SOL 8-1-9-SD-SS-MJ01 DUE 070799 POC Carlos M. Smiley, Contracting Officer, Phone (256) 544-0355, Fax (256) 544-8656, Email carlos.smiley@msfc.nasa.gov -- Carlos M. Smiley, Contracting Officer, Phone (256) 544-0355, Fax (256) 544-8656, Email carlos.smiley@msfc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.nasa.gov/EPS/MSFC/date.html#8-1-9-SD-SS-MJ01. E-MAIL: Carlos M. Smiley, carlos.smiley@msfc.nasa.gov. NASA/MSFC is hereby soliciting information for potential sources for an Electron-Impact High Flux X-Ray Generator System in accordance with the following specifications: 1. An electron-impact high flux x-ray generator system is required which will produce a small diameter x-ray spot (less than 30 microns FWHM at 15 kV accelerating voltage) on a copper target. The copper target must be suitably inclined with respect to the electron beam and the output port so that a round x-ray spot is projected through the output window. 2. The accelerating voltage, beam current, and focus of the x-ray spot must be independently adjustable within the following ranges: (a) accelerating voltage: 10-60 kV (b) electron beam current: 0.1-2.0 mA (subject to power dissipation limits in section 3 below) (c) x-ray spot size lower limit: less than or equal to 30 microns FWHM (d) x-ray spot size upper limit: 100 microns FWHM. (e) Independent adjustment of accelerating voltage, electron beam current, and x-ray spot size is required, and can be accomplished either by a manually operated controller, or by a computer interface. 3. X-ray power requirements. (a) With the x-ray spot focussed down to the smallest size specified in section 2(c), the x-ray generator system must be capable of producing at least 20 watts of x-ray power at an accelerating voltage of 15 kV. (b) With the x-ray spot focussed at the upper size limit specified in section 2(d), the x-ray generator system must be capable of producing at least 30 watts of power at an accelerating voltage of 15 kV, and 60 watts of power at an accelerating voltage of 30 kV. 4. The centroid of the x-ray spot must be stable within 5 microns RMS over a period of 8 hours, as verified by test. In order to meet this requirement, an initial warmup/stabilization period of up to 4 hours is permitted. 5. The output port of the microfocus x-ray generator system must include a high vacuum gate valve which can be attached to a standard Conflat flange. The source must be capable of being operated in a mode where the gate valve is attached to a high vacuum chamber; when the gate valve is opened and the source is turned on, x-ray emission lines from the copper target (specifically the Cu L alpha emission line at 0.94 keV) will radiate into the vacuum chamber from the microfocus x-ray source. A clear path from the microfocus x-ray spot to the output port is required; any filters, windows, or obstructions present in the source must not reduce the x-ray transmission below 90% at an energy of 0.94 keV. No solicitation exists; therefore, do not request a copy of the solicitation. If a solicitation is released it will be synopsized in the CBD and on the NASA Acquisition Internet Service. It is the potential offerors responsibility to monitor these sites for the release of any solicitation or synopsis. Vendors having the capabilities necessary to meet or exceed the stated requirements are invited to submit appropriate documentation, literature, brochures, and references. Please advise if the requirement is considered to be a commercial or commercial-type product. A commercial item is defined in Internet "Note A". This synopsis is for information and planning purposes and is not to be construed as a commitment by the Government nor will the Government pay for information solicited. Respondents will not be notified of the results of the evaluation. Respondents deemed fully qualified will be considered in any resultant solicitation for the requirement. The Government reserves the right to consider a small business or an 8(a) set-aside based on responses hereto. All responses shall be submitted to Carlos Smiley. Electronic submissions are preferred. Responses should be submitted no later than July 7, 1999. In responding reference 8-1-9-SD-SS-MJ01. Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html Posted 06/25/99 (D-SN347153). (0176)

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