Advances in Cryogenic Engineering: Proceedings of the 1959 by R. F. Blanks, K. D. Timmerhaus (auth.), K. D. Timmerhaus

By R. F. Blanks, K. D. Timmerhaus (auth.), K. D. Timmerhaus (eds.)

The 1959 Cryogenic Engineering convention Committee is happy to pre­ despatched the papers of the 1959 Cryogenic Engineering convention. we're lucky to have had the college of California at Berkeley, Ca!., as our host for the 5th nationwide assembly of this type. The movement to the West Coast for this prior Cryogenic Engineering convention was once brought on partly through the massive focus of missile actions that are to be came upon there. reputation of cryogenic operations and strategies within the mis­ sile box is given in lots of of the incorporated papers. The college of California used to be definitely wen fitted to this type of assembly as this since it was once right here that a lot early paintings used to be performed in cryogenics. This pioneering in cryogenics remains to be glaring this present day within the operation of the 72-in. bub­ ble chamber on the Lawrence Radiation Laboratory. The Cryogenic Engineering convention salutes the missile and the cryogenic pioneers of the day prior to this and this present day on the college of California. targeted thank you needs to visit Dr. D. N. Lyon from the Low-Temperature Laboratory of the college of California, who as chairman of the 1959 Cryogenic Engineering convention Committee has labored tirelessly to extend the stature of this convention. vii ACKNOWLEDGMENT The Cryogenic Engineering convention Committee is deeply thankful for the continuing help and curiosity of the subsequent businesses who made the 1959 Cryogenic Engineering convention attainable. Aerojet-General company A. D. Little, Inc.

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5b. A-1 25 volume. The additional gain over ordinary high-field coils achievable in this way can be estimated to be between 40 and 50%. Some additional gains could conceivably be achieved by redistribution of the current density in the coil so as to diminish the effect of the magnetoresistance. The gains achievable in this way are slight, but may be of some interest at the highest magnetic fields. The effects of changing the distribution of current in a solenoid are most easily calculated in terms of the effect on the coil figure of merit F • • From Eqs.

Bor pumpout inflotion pressure chomber-side pumpoul Fig. 6. Inflatable gasket section. because the gasket is sealed when the indium is very cold and in a hydrogen atmosphere . The first operational test oftheinflatablegasketwas with liquid nitrogen [12). I. and the chamber- side pumpout pressures about 125 fL. This was encouraging. When the chamber was cold the inflation pressure was increased to 200 psig to seal the gasket. I.. These vacuums were measured at the pump manifold while thepumpwas operating.

The outer indium gasket between the glass and the inflatable gasket had two necked-down spots which were about ~ in. wide, rather than the usual in. wide. This is believed to be caused during cool-down when the indium shrinks at a very much faster rate than the stainless steel. The necked-down indium was also observed after the nitrogen run. %6 Performance of the 6-in. Rubber Boot Valves There are two 6-in. 7). The expansion valve opens, allowing the gas in the expansion line to flow trom the chamber into the expansion tank and lower the chamber pressure.

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