New cutting scheme of magnetic alloy cores for J-PARC synchrotrons

Masahito Yoshii, Shozo Anami, Yoshisato Funahashi, Eizi Ezura, Keigo Hara, Chihiro Ohmori, Akira Takagi, Makoto Toda, Kenji Ueno, Masahiro Nomura, Fumihiko Tamura, Masanobu Yamamoto, Alexander Schnase, Katsushi Hasegawa, Tamaki Yoshioka, Yuichi Morita

Research output: Contribution to conferencePaperpeer-review

1 Citation (Scopus)


A cut core configuration is adopted for the magnetic alloy cavities of J-PARC Main Ring to lower the R/Q to combat beam loading. The cut core surface is treated by "Diamond Polishing" which improves surface quality, therefore reducing the local temperature rise due to RF losses in operation. Long-term high-power tests have been performed for the J-PARC MR RF systems. The mechanisms of local heating, the cutting scheme, and the manufacturing method are presented.

Original languageEnglish
Number of pages3
Publication statusPublished - 2006
Externally publishedYes
Event10th European Particle Accelerator Conference, EPAC 2006 - Edinburgh, United Kingdom
Duration: Jun 26 2006Jun 30 2006


Other10th European Particle Accelerator Conference, EPAC 2006
Country/TerritoryUnited Kingdom

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics


Dive into the research topics of 'New cutting scheme of magnetic alloy cores for J-PARC synchrotrons'. Together they form a unique fingerprint.

Cite this