抄録
Mechanical characteristics of the coil was measured during the charge-up test by strain gauges and displacement gauges attached directly to the coil. To estimate the winding stiffness of the coil, the expansion test was performed on the test winding at both 300K and 77K after the fabrication of the test winding. The test results obtained in current operation were compared with the calculation by FEM analysis and expansion test results. As a result of comparison, equivalent stiffness calculated by FEM was good agreement with one measured by the charge-up test of the DPC-TJ, which had higher rigidity than the test winding. As a result of the charge-up test, it was demonstrated that the DPC-TJ coil had high rigidity as was designed.
