| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8179044 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2013 | 8 Pages |
Abstract
The accelerating cavities used in the rapid cycling synchrotron (RCS) of the Japan Proton Accelerator Research Complex (J-PARC) are loaded with magnetic alloy (MA) cores. Over lengthly periods of RCS operation, significant reductions in the impedance of the cavities resulting from the buckling of the cores were observed. A series of thermal structural simulations and compressive strength tests showed that the buckling can be attributed to the low-viscosity epoxy resin impregnation of the MA core that causes the stiffening of the originally flexible MA-ribbon-wound core. Our results showed that thermal stress can be effectively reduced upon using a core that is not epoxy-impregnated.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Instrumentation
Authors
Y. Morita, T. Kageyama, M. Akoshima, S. Torizuka, M. Tsukamoto, S. Yamashita, N. Yoshikawa,