By D. L. Atherton, A. R. Eastham (auth.), K. D. Timmerhaus, D. H. Weitzel (eds.)
With the 1975 Cryogenic Engineering convention this se ries enters the 3rd decade of offering the newest advances within the box of cryogenic engineering. The 1975 Cryogenic Engineering convention additionally marked the 1st time the assembly have been held outdoor the territorial limits of the U.S.. in accordance with the enthusiastic reaction of the attendees and the exemplary hospitality of the Canadian hosts, it definitely are usually not the final assembly to convene past the confines of the fifty states. The Cryogenic Engineering convention Board is very thankful to The Royal army university of Canada and Queen's college for the invitation to carry this assembly in Kingston, Ontario, Canada. the help of A. C. Leonard and his employees extra immeasurably in making this stopover at to Canada either a pie asant and a memorable one. The 1975 Cryogenic Engineering convention was once the 1st assembly of this crew at the new biennial convention time table. because the final convention in 1973, the Western Hemisphere has skilled the effect of assorted strength shortages. therefore, it was once applicable that the subject "Cryogenics utilized to normal source administration" for this convention was once not just well timed but additionally a chance for the medical neighborhood engaged in cryogenic actions to study the position of cryogenics in assembly those new demanding situations and difficulties dealing with the energy-deficient countries of the area. The Cryogenic Engineering convention used to be additionally happy to have the Interna tional Cryogenic fabrics convention sign up for them during this meeting.
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Extra info for Advances in Cryogenic Engineering
2. The thermal conductivity of the support can be represented by a constant average thermal conductivity K. The heat transfer between the vapor and the support is perfect, that is, both have the same temperature at each level. 45 liters/hf. Radiation Shield The surface area A of the helium container was 3716 cm z. 8-mm-thick üFHC copper to maintain the 10 K conduction temperature difference. Neck Tube The analysis for heat leak from the neck tube included losses from the neck tube, the power leads, and the instrumentation leads.
Schematic details of the design of the coil and cryostat are shown in Fig. 1. 76 mm thick, stainless steel member that * Work done under eontraet with Fusion Energy Corporation, Princeton, New Jersey. Table I. 4liters/hr 18 OUENCH RELIEF R. A. Ackermann, C. D. Henning, and R. L. ===-===u_ L H. lH. I"Inl L EV E L SENSOR RAOIATION SHIELO SUPERCONDUCTIVE COllS Fig. 1. Dipole superconductive coil system. extends from room temperature to the liquid helium container. A liquid-nitrogencooled, superinsulated radiation shield was placed around the helium container and between the support sections to reduce he at leak.
R. A. Ackermann, C. D. Henning, and R. L. Rhodenizer, in: Advances in Cryogenic Engineering, Vol. 17. DISCUSSION Question by D. Atherton, Queen's University: Quench times appear surprisingly long considering the current density. Is this because only one of the coils is quenched and the inductive coupling between coils slows quench transients? Answer by author: In split coils the normal zone cannot propagate by conduction into the second coil. Thus, the total system energy must be absorbed by one coil, resulting in a longer time constant.
Advances in Cryogenic Engineering by D. L. Atherton, A. R. Eastham (auth.), K. D. Timmerhaus, D. H. Weitzel (eds.)