1972 Cryogenic Engineering conference a brief informal session was introduced during the lunch break of the last day at which delegates from different countries gave their own summary of their national cryogenics programme. This was felt to be such a valuable aid to international communication the 1973 conference followed this tradition. This report is an edited version of these talks given on 9 August 1973.
Review of international developments in cryogenics Canada
Many exciting developments are taking place in superconductivity. McGill University has built a hybrid magnet which is a combination of two superconducting magnets, a niobium-tin magnet and a niobium-titanium magnet. The niobium-titanium magnet is designed to generate 75 kG, the niobium-tin magnet is sitting inside that and should generate approximately 150 kG in a 19 cm bore, and inside that 19 cm bore there is space for a cryogenic aluminium magnet. Tests have just been completed on the niobium-titanium coil. It in fact generated fractionally higher than the designed field, 75Β½ kG in a 41 cm bore. Tests have just started on the combination of the two superconducting coils, there are some minor adjustments to be made; hopefully, though testing of the combination should be completed in about another month or two. Once the two superconducting coils have been tested, it may be possible to use a higher field superconducting insert, CSCC, a thriving superconductivity company, in Montreal, has the licence for the old RCA niobium-tin process, and much of the former RCA equipment. They have made many developments and improvements since those days, and certainly the magnets wound from that material have performed remarkably well. Also in Montreal, Hydro Quebec Research Laboratories have a small programme concerned with cryogenic power transmission, but this has been relatively slow getting started.