Irradiation studies of magnet insulator materials

Recent magnet insulator studies at the Idaho National Engineering Laboratory have included work applicable to quite different magnet configurations, both the conventional wrapped conductor and the Bitter plate. These investigations have emphasized irradiation effects work in support of the Princeton Plasma Physics Laboratory (PPPL) for the Tokamak Fusion Test Reactor (TFTR) and of Massachusetts Institute of Technology (MIT) for the ZEPHYR program. Postirradiation testing included shear bond testing of specimens prepared at Princeton and compressive fatigue tests of fiberglass-expoxy disks, principally G-10, for MIT. The fatigue tests included both room temperature and liquid nitrogen temperature over a range of maximum loads. The method for determining disk failure during the fatigue test is emphasized in this report. (orig.)