A New Type of Electromagnet. Part I. Operation at 20‐kw Level

An improved iron core magnet for general laboratory use, weighing two tons, has been designed and several units have been constructed. The design incorporates the desirable features of a number of earlier magnets and is engineered to give the optimum utility with minimum space and weight and with minimum attention by the operating personnel. A summary of test performance at 20 kw is given below. Operation at higher power levels will be described in Part II. 11− in. diameter poles 5− in. gap 10 kilogauss 2− in. gap 17 kilogauss . 5 3 4 − in. diameter poles 2− in. gap 23 kilogauss 1− in. gap 30 kilogauss . 1− in. diameter poles 1− in. gap 32 kilogauss 1 2 − in. gap 37 kilogauss 1 4 − in. gap 42 kilogauss .