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Sakanaka, Shogo*; Akemoto, Mitsuo*; Aoto, Tomohiro*; Arakawa, Dai*; Asaoka, Seiji*; Enomoto, Atsushi*; Fukuda, Shigeki*; Furukawa, Kazuro*; Furuya, Takaaki*; Haga, Kaiichi*; et al.
Proceedings of 1st International Particle Accelerator Conference (IPAC '10) (Internet), p.2338 - 2340, 2010/05
Future synchrotron light source using a 5-GeV energy recovery linac (ERL) is under proposal by our Japanese collaboration team, and we are conducting R&D efforts for that. We are developing high-brightness DC photocathode guns, two types of cryomodules for both injector and main superconducting (SC) linacs, and 1.3 GHz high CW-power RF sources. We are also constructing the Compact ERL (cERL) for demonstrating the recirculation of low-emittance, high-current beams using above-mentioned critical technologies.
Shibuya, Hitoshi*; Suzuki, Takashi*; Kuroda, Hidetaka
JAEA-Research 2008-052, 138 Pages, 2008/07
JAEA-Research-2008-052.pdf:43.42MB
The soundness of the design of the support system for shafts and galleries and the effects of pre- and post-excavation grouting have been assessed to confirm the proposed technical solutions at the Mizunami Underground Research Laboratory. For this purpose, design of the shafts above 1,000 m depth and the galleries above 500 m depth has been improved and grouting effects around the shafts has been calculated by means of seepage flow analysis. Additionally, analytical investigations on the concrete lining with respect to the influence of water pressure have been performed.
Sakanaka, Shogo*; Ago, Tomonori*; Enomoto, Atsushi*; Fukuda, Shigeki*; Furukawa, Kazuro*; Furuya, Takaaki*; Haga, Kaiichi*; Harada, Kentaro*; Hiramatsu, Shigenori*; Honda, Toru*; et al.
Proceedings of 11th European Particle Accelerator Conference (EPAC '08) (CD-ROM), p.205 - 207, 2008/06
Future synchrotron light sources based on the energy-recovery linacs (ERLs) are expected to be capable of producing super-brilliant and/or ultra-short pulses of synchrotron radiation. Our Japanese collaboration team is making efforts for realizing an ERL-based hard X-ray source. We report recent progress in our R&D efforts.
Shibuya, Hitoshi*; Suzuki, Takashi*; Kuroda, Hidetaka
JAEA-Research 2008-027, 274 Pages, 2008/03
JAEA-Research-2008-027-01.pdf:17.64MBJAEA-Research-2008-027-02.pdf:41.84MB
Initial design of shafts and tunnels of the Mizunami Underground Research Laboratory was done in FY2002, and preliminary analysis of those of 0 to 300 m depth was done in FY2003 on the basis of geological survey results obtained then. We have recently completed boring of MIZ-1 borehole and obtained geological data to the depth of 1,000 m. In order to confirm validity of the design, we have reviewed geological model, rock property, initial stress and other characteristics and conducted corrective analysis (two-dimensional) on the basis of the new data. In junction of shaft and sub-stage (horizontal tunnel) (100 m and 300 m depth) where stress might be concentrated, three-dimensional analysis was done.
Shibuya, Hitoshi*; Suzuki, Takashi*; Yokoi, Mikihito*
JNC TJ7410 2005-005, 253 Pages, 2004/02
JNC-TJ7410-2005-005.pdf:54.21MB
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