Linear Accelerator Conference (LINAC)

[ 産業機械 ]

LINAC 2014

T. Yanagisawa et al.

MHI's activities for superconducting accelerator are reported. MHI have supplied several 9-cell cavities for STF (R&D of ILC project at KEK) and have been considering production method for stable quality and cost reduction. And we had fabricated and installed cryomodules for STF and ERL R&D. These activities are reported in detail.

K. Okihira et al.

MHI have supplied several 9-cell cavities for STF (R&D of ILC project at KEK) and have been considering production method for stable quality and cost reduction, seamless dumb-bell cavity was one of them. We had fabricated a 2 cell seamless dumb-bell cavity for cost reduction and measured RF performance in collaboratio with JLab, KEK and MHI. Surface treatment recipe for ILC was applied for MHI 2-cell cavity and vertical test was performed at JLab. The cavity reached Eacc=32.4MV/m after BCP and EP. Details of the result are reported.

LINAC 2010

K. Sennyu et al.

MHI has supplied 1.3GHz superconducting cavities for the Energy Recovery Linac (ERL) project and the International Linear Collider (ILC) R&D project (STF: Superconducting RF Test Facility in KEK) to KEK in Japan for several years. [1] We are improving the technology to design and fabricate the superconducting cavities for ILC R&D step by step. The status of superconducting cavity development for ILC at MHI is described in this paper.

K. Okihira et al.

An X-ray free electron laser (XFEL) is under construction at RIKEN/Spring-8. In this project, a Cband choke mode accelerating structures and C-band RF pulse compressors are employed to obtain a high acceleration gradient of more than 35 MeV/m. As of May 2010, we have completed the fabrication of all units and conducted RF measurements on them. It reports on the result of these 64 C-Band units and result of the installation of injector section.

LINAC 1996

Y. Kamino et al.

A 10 MeV 25 KW class electron LINAC was developed for sterilization of medical devices. The LINAC composed of a standing wave type single cavity prebuncher and a 2 m electroplated traveling wave guide uses a 5 MW 2856 MHz pulse klystron as an RF source and provides 25 KW beam power at the Ti alloy beam window stably after the energy analyzing magnet with plus-minus 1 MeV energy slit. The practical maximum beam power reached 29 KW and this demonstrated the LINAC as one of the most powerful S-band electron LINACs in the world. The control of the LINAC is fully automated and the "One-Button Operation" is realized,which is valuable for easy operation as a plant system. 2 systems have been delivered and are being operated stably.

LINAC 1990

Y. lino et al.

A compact drift tube will be used for the drift-tube linac (DTL) which is under development for the Japanese Hadron Project (JHP). The methods are briefly described for holding the permanent quadrupole magnet fixed into the drift-tube cell and for assembling the drift tube onto the DTL cavity tank.

K. Yamasu et al.

A high-power model of the annular-coupled structure (ACS) was fabricated and tuned to an operating frequency of 1296 MHz for the Japanese Hadron Project (JHP). The nose-cone region is cooled by water channels in the unit in order to make possible the high-duty operation. Some details are described for machining high-Q, ultra-precision cavity segments including coupling slots. Detailed tuning procedures and brazing techniques are also presented.