CONSTRUCTION OP A SUPERCONDUCTING TEST COIL COOLED BY HELIUM FORCED CIRCULATION

摘要

In the case of small coils, they might be counterbalanced by the difficulty of having (with forced cooling) at the same time a relatively small feeding current and a high over-all current density in the coil cross-section. Large values of feeding current will originate power losses in the input leads, which will be normally unacceptable for small coils.nWith the purpose of studying experimentally the technical problems related to forced cooling of superconducting coils, we have constructed an apparatus to circulate the helium, and a test coil.nDetails of this work are reported in the following sections.