lunar factory could be ready by the year 2002 and deliver simple products at cost of 5 to 10 T/kg. (Author (ESA) ) Source of Abstract (Subfile): ESA Descriptors: *C0ST ANALYSIS; *LUNAR BASES; *PROJECT PLANNING; *SPACE MANUFACTURING; ECONOMIC FACTORS; HEAVY LIFT LAUNCH VEHICLES; LUNAR MOBILE LABORATORIES; PROJECT MANAGEMENT; RISK; SOLAR GENERATORS Superconducting traveling wave accelerators. FARKAS, Z„ D. Stanford Linear Accelerator Center, Calif. Corp. Source Code: 80070846 Nov. 1984. 18P. Report No.: DE85-006247; SU-SLAC/AP-38 Contract No.: DE-AC03-758F-00515 L a n g u age: English. Country of Origin: United States. Country of Publication: Uni ted States Document Type: REP0RT Most documents available from AIAA Technical Library Other Availabi1ity; NTIS HC A02/MF AOI Journa1 Announcement: STAR 8515 The app1icabi1ity of superconductivity to traveling wave accelerators is considered. Unlike CW operation of a superconducting standing wave or circulating wave a cc e1erat or sec ti on, whi ch req uires impr ov emen t factors (superconductor conductivity divided by copper conductivity) of about 10(6) in order to be' of practical use, a Superconduct ing Traveling wave factors as 1ow as about 10(3), which are attainable with niobium or lead at 4.2K, the temperature of 1iquid helium at atmospheric pressure. Changing from a copper traveling wave accelerator to SUTRA achieves the following: (1) for a given gradient SUTRA reduces the pea k and average power requ i r ement s typically byu a factor of 2; (2) SUTRA reduces the peak power still further because it enables us to increase the filling time and thus trade pulse width for gradient; (3) SUTRA makes possi b1e a reasonab1y 1ong sect i on at hi gher frequencies; and (4) SUTRA makes possible recirculation without additional RF average power. (DOE) Source of Abstract (Subfile): DOE Keywords: *CAVITY RESONATORS; *ENERGY CONVERSION EFFICIENCY; *LINEAR ACCELERATORS; *SUPERCONDUCTIVITY; ELECTRIC FIELDS; ENERGY STORAGE; LOW TEMPERATURE; PULSE REPETITION RATE; RESONANCE; TRAVELING WAVE TUBES Subject Classification: 7576 Solid-State Physics (1975--) Studies of photosynthetic Energy Conversion. Final Report, 1 Dec. 1981 - 30 Nov. 1984. CLAYTON, R. K.; JAGENDORF, A. T. Corn e11 Un i v. , 11 hac a, N. Y. Cor- p . Source Code: C5729333 Jan. 1985. 6P. Report No.: DE85-005973; DOE/ER-03162/59 Contract No.: DE-AC02-76ER-03162 Language: Eng1ish.
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