Conceptual design and related R&D on ITER mechanical based primary pumping system

Tanzawa, Sadamitsu; Hiroki, Seiji; Abe, Tetsuya; Shimizu, Katsusuke*; Inoue, Masahiko*; Watanabe, Mitsunori*; Iguchi, Masashi*; Sugimoto, Tomoko*; Inohara, Takashi*; Nakamura, Junichi*

JAEA-Technology 2008-076, 99 Pages, 2008/12

JAEA-Technology-2008-076.pdf:35.19MB

The primary vacuum pumping system of the International Thermonuclear Experimental Reactor (ITER) exhausts a helium (He) ash resulting from the DT-burn with excess DT fueling gas, as well as performing a variety of functions such as pump-down, leak testing and wall conditioning. A mechanical based vacuum pumping system has some merits of a continuous pumping, a much lower tritium inventory, a lower operational cost and easy maintenance, comparing with a cryopump system, although demerits of an indispensable magnetic shield and insufficient performance for hydrogen (H) pumping are well recognized. To overcome the demerits, we newly fabricated and tested a helical grooved pump (HGP) unit suitable for H pumping at the ITER divertor pressure of 0.1-10 Pa. Through this R&D, we successfully established many design and manufacturing databases of large HGP units for the lightweight gas pumping. Based on the databases, we conceptually designed the ITER vacuum pumping system mainly comprising the HGP with an optimal pump unit layout and a magnetic shield. We also designed conceptually the reduced cost (RC)-ITER pumping system, where a compound molecular pump combining turbine bladed rotors and helical grooved ones was mainly used. The ITER mechanical based primary pumping system proposed has eventually been a back-up solution, whereas a cryopump based one was formally selected to the ITER for construction.

An Economic index regarding market creation of products obtained from utilization of radiation and nuclear energy, 4; Comparison between Japan and U. S. A.

Yanagisawa, Kazuaki; Kume, Tamikazu; Makuuchi, Keizo; Tagawa, Seiichi*; Chino, Mitsuo*; Inoue, Tomio*; Takehisa, Masaaki*; Hagiwara, Miyuki*; Shimizu, Masahiko*

Journal of Nuclear Science and Technology, 39(10), p.1120 - 1124, 2002/10

https://doi.org/10.3327/jnst.39.1120

no abstracts in English

Development of a compact W-shaped pumped divertor in JT-60U

Sakurai, Shinji; Hosogane, Nobuyuki; Masaki, Kei; ; ; *; *; Shimizu, Katsuhiro; Akino, Noboru; Miyo, Yasuhiko; et al.

Fusion Engineering and Design, 39-40, p.371 - 376, 1998/00

https://doi.org/10.1016/S0920-3796(97)00176-2

no abstracts in English

Electrical insulation and conduction coating for fusion experimental devices

Onozuka, Masanori*; Tsujimura, Seiji*; Toyoda, Masahiko*; Inoue, Masahiko*; Abe, Tetsuya; Murakami, Yoshio

Fusion Technology, 29(1), p.73 - 82, 1996/01

https://doi.org/10.13182/FST96-A30657

no abstracts in English

Development of electrical insulation and conduction coating for fusion experimental devices

Onozuka, Masanori*; Tsujimura, Seiichi*; Toyoda, Masahiko*; Inoue, Masahiko*; Abe, Tetsuya; Murakami, Yoshio

Fusion Technology 1994, Vol.1, p.803 - 806, 1995/00

https://doi.org/10.1016/B978-0-444-82220-8.50168-0

no abstracts in English

Tests of the JAERI fuel cleanup system with deuterium at the Tritium Systems Test Assembly; JFCU stand alone deuterium test, JFCU stand alone deuterium test 2

Konishi, Satoshi; Ohira, Shigeru; Hayashi, Takumi; Inoue, Masahiko*; Watanabe, Tetsuo*; Naruse, Yuji; Okuno, Kenji; Barnes, J. W.*; W.Harbin*; Bartlit, J. R.*; et al.

JAERI-M 93-089, 46 Pages, 1993/03

JAERI-M-93-089.pdf:1.26MB

no abstracts in English

Joint operation of TSTA under the collaboration between JAERI and DOE; TSTA loop run October 1990, from October 1990 tritium run test plan and result, TTA-TP-100-19

Konishi, Satoshi; Ohira, Shigeru; Inoue, Masahiko*; Watanabe, Tetsuo*; Naruse, Yuji; Okuno, Kenji; Barnes, J. W.*; Sherman, R. H.*; Bartlit, J. R.*; Anderson, J. L.*

JAERI-M 93-085, 40 Pages, 1993/03

JAERI-M-93-085.pdf:0.8MB

no abstracts in English

Joint operation of the TSTA under the collaboration between JAERI and U.S.-DOE; TSTA extended loop operation with 100 grams of tritium on April-May, 1992

Hayashi, Takumi; Nakamura, Hirofumi; Konishi, Satoshi; Inoue, Masahiko*; Hirata, Kazuhiro*; Okuno, Kenji; Naruse, Yuji; Anderson, J. L.*; Sherman, R. H.*; Willms, R. S.*; et al.

JAERI-M 93-083, 54 Pages, 1993/03

JAERI-M-93-083.pdf:1.64MB

no abstracts in English

Joint operation of the TSTA with the J-FCU under the collaboration between JAERI and U.S.-DOE; A First integrated tritium test between J-FCU and ISS on October, 1991

Hayashi, Takumi; Nakamura, Hirofumi; Konishi, Satoshi; Yamanishi, Toshihiko; Inoue, Masahiko*; Hirata, Kazuhiro*; Okuno, Kenji; Naruse, Yuji; Anderson, J. L.*; Barnes, J. W.*; et al.

JAERI-M 93-081, 35 Pages, 1993/03

JAERI-M-93-081.pdf:1.19MB

no abstracts in English

Isotope separation system experiments at the TSTA

Inoue, Masahiko; Konishi, Satoshi; Yamanishi, Toshihiko; Ohira, Shigeru; Watanabe, Tetsuo*; Okuno, Kenji; Naruse, Yuji; Sherman, R. H.*; Barnes, J. W.*; Bartlit, J. R.*; et al.

Fusion Technology, 21(2P2), p.293 - 298, 1992/03

https://doi.org/10.13182/FST92-A29760

no abstracts in English