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Mass Driver Two - Cryogenic moduleThe cryogenic module of Mass Driver Two comprises a 3.25 inch (82.55 mm) OD bucket with two 44 kilo-ampere-turn coils made with .028 inch (.71 mm) diam niobium-titanium multi-filamentary cable in a copper matrix, impregnated with lead alloy for thermal inertia, as well as the service station to refrigerate, energize and eject the bucket. The station is housed in a six inch flanged pyrex cross which connects to the four inch pyrex tube of the mass driver itself. The bucket is refrigerated by being forced against a copper braid cradle attached to the bottom of a liquid helium reservoir which protrudes into the cross from above. The bucket is energized inductively by turning off two superconducting coils which are also attached to the helium reservoir, and which have maintained the correct flux linkage through the bucket coils during their cool-down through the critical temperature. Once charging is completed, the clamping pressure is released and the bucket is injected into the mass driver by means of two normal-conductor pulse coils surrounding the horizontal branches of the cross.
Document ID
19790050825
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Fine, K.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Williams, F.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Mongeau, P.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Kolm, H.
(MIT Cambridge, Mass., United States)
Date Acquired
August 9, 2013
Publication Date
May 1, 1979
Subject Category
Spacecraft Propulsion And Power
Report/Patent Number
AIAA PAPER 79-1398
Meeting Information
Meeting: Princeton University and American Institute of Aeronautics and Astronautics, Conference on Space Manufacturing Facilities, 4th, Princeton University
Location: Princeton, NJ
Start Date: May 14, 1979
End Date: May 17, 1979
Accession Number
79A34838
Distribution Limits
Public
Copyright
Other

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