Mitsubishi Heavy Industries Machinery Systems, Ltd. (MHI-MS), a subsidiary of MHI, took over MHI's accelerator business on October 1, 2015, and has been developing the business since that time. MHI-MS has developed manufacturing process of superconducting cavities continuously. In this presentation, recent progress will be reported.
Mitsubishi heavy Industries, Ltd. (MHI) released the ASTROCAM 7,000HS, a radioactive substance visualization camera. The ASTROCAM 7,000HS incorporates the technologies for the gamma-ray detector used for the ASTRO-H satellite, which MHI has been developing under entrustment from and together with scientists at the Institute of Space and Astronautical Science (ISAS) at the Japan Aerospace Exploration Agency (JAXA), and the design was modified for use on land to commercialize the product . MHI and Mitsubishi Heavy Industries Machinery Systems, Ltd. (MHI-MS) performed on-site residual radiation measurements at the 50 GeV Main Ring (MR) of the Japan Proton Accelerator Research Complex (J-PARC) under collaboration with the High Energy Accelerator Research Organization (KEK) and the Japan Atomic Energy Agency (JAEA) and succeeded visualization of radiation hot spots of the accelerator components. The outline of the ASTROCAM 7,000HS, the measurement principle and the first measurement results at the JPARC MR are described.
MHI's activities for superconducting accelerator are reported. MHI has supplied several 9-cell cavities for STF (R&D of ILC project at KEK) and have been considering production method for stable quality, cost reduction and mass production. Furthermore MHI had produced another shape cavities and cryomodules for several R&D projects. These activities are reported in detail.
Mitsubishi Heavy Industries (MHI) is manufacturing various types of accelerator components. As examples of recent production activities result of a mass-production of S-band accelerating structure for PAL-XFEL and a status of series production of C-band waveguide network for SwissFEL will be reported in this paper.
Cavity performance has been improved by various efforts to meet the ILC spec stably in these days. For industrialization, not only Quality but also Cost and Delivery time, that is, QCD are important. We report our activities for stable quality and cost reduction in this report.
A cavity fabrication method with new forming and laser welding technology is reported. 1.3 GHz 9-cell cavity with laser welding for stiffener and flange joint was achieved 29.5 MV/m at vertical test by KEK. 1.3 GHz 2-cell seamless dumbbell cavity is fabricated at MHI to verify the new fabrication method. These improvements are reported in detail. Some fabrication methods for cost reduction and stable quality are introduced.
RIKEN and JASRI already completed the construction of XFEL/Spring8. Recently the facility was named “SACLA” (SPring-8 Angstrom Compact Free Electron LAser). The commissioning team succeeded in the XFEL laser oscillation of 0.8 Å wavelength in July 2011. Now the accelerator is stably operated for the XFEL commissioning. In this project, a C-band choke mode accelerating structure and C-band RF pulse compressor 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.
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.  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.
MHI has supplied superconducting cavities for the KEKB Crab project, ERL (Energy Recovery Linac) project and the ILC R&D (STF: Superconducting RF Test Facility in KEK) project to KEK in Japan for the last few years. We are improving the technology to design and fabricate the superconducting cavities for ILC R&D. We can present some examples of our work that have improved the quality and productivity of the superconducting cavities. We designed and fabricated four STF 1.0-type cavities and two STF 1.5-type cavities. The status of superconducting cavity development for ILC at MHI is described in this paper.