Development of the ceramics chamber integrated pulsed magnet for an accelerator implementation

We are proceeding the development of air-core type Ceramics Chamber Integrated Pulsed Magnet (CCIPM) aiming at the application to future light source accelerator on low emittance ring with a narrow bore and a short circumference ring. The dipole-type CCIPM is composed of ceramics cylinder and four copper coils which are implanted into the ditch penetrated on the cylinder body along length 30 cm by silver brazing. In addition to this structure, we succeeded in the implementations of the cable clasps that mechanically connect the coils and power supply with feeder lines and the precise pattern shape coating inside the ceramic cylinder. Improved brazing technique made it possible to braze the coil implantation and the base metal grafting on the coils at the same time. And newly developed pattern coating can coat the inside surface avoiding the coil parts, reduce the eddy current caused by main magnetic field, and passes the beam wall current by capacitance structure. We report the details about the approach to new technical development and an evaluation of the reliability from the viewpoint of vacuum, magnetic field, insulation performance on the accelerator implementation. (author)