[en] The department has three activities: the Superconducting Magnet Development Program (SCMDP), the Vacuum Coating and Thin Film Laboratory, and the Cryoelectric Project, which are reported separately. The first full funded year of the SCMDP has been a period of considerable accomplishment and of much review and subsequent revision of the Program Plan. The vacuum coating and thin film activity produced a variety of films and coatings for use in several programs in the Thermonuclear Division. Considerable work was directed toward samples for ORMAK surface studies and gold black coatings for plasma diagnostics instrumentation. Breakdown measurements with ac and impulse voltage on thin single-layer polymer films are summarized in the section on Cryogenic Dielectric Measurements. Further breakdown measurements on liquid helium with ac voltage and standard ASTM electrodes are discussed. Investigations are reported on the dielectric performance of contaminated liquid helium with point-plane electrodes. Progress is reported on the construction of the 1.2-m-diameter high-voltage cryostats. Further development on the high-voltage facilities is described, including successful repair and testing of the damaged transformer in the 700 kVac power supply, and purchase and installation of a 10-stage, 250-kV impulse generator