Hybrid Magnets Will Need Less Power for Same Field

More intense magnetic fields for the same power input can be had by piggy‐backing standard water‐cooled solenoids with superconducting ones. Plans at Francis Bitter National Magnet Laboratory, MIT, foresee superconducting boosters that could add 100 kilogauss to any of the 25 conventional solenoids now available at the Bitter laboratory. Then, since the laboratory 10‐megawatt power supply can be divided into four independently controlled blocks, one can have four simultaneous experiments in 200‐kG fields or one experiment at more than 300 kG. With its present equipment the laboratory is limited to one experiment at more than 200 kG and a maximal field of 225 kG.