Application of clear polymethylmethacrylate dosimeter Radix W to a few MeV electron in radiation processing

Seito, Hajime; Ichikawa, Tatsuya*; Hanaya, Hiroaki; Sato, Yoshishige*; Kaneko, Hirohisa; Haruyama, Yasuyuki; Watanabe, Hiroshi*; Kojima, Takuji

Radiation Physics and Chemistry, 78(11), p.961 - 965, 2009/11

https://doi.org/10.1016/j.radphyschem.2009.07.018

no abstracts in English

Improvement of the shift bump magnetic field for a closed bump orbit of the 3-GeV RCS in J-PARC

Takayanagi, Tomohiro; Kanazawa, Kenichiro; Ueno, Tomoaki; Someya, Hirohiko*; Harada, Hiroyuki*; Irie, Yoshiro; Kinsho, Michikazu; Yamazaki, Yoshishige; Yoshimoto, Masahiro; Kamiya, Junichiro; et al.

IEEE Transactions on Applied Superconductivity, 18(2), p.306 - 309, 2008/06

https://doi.org/10.1109/TASC.2008.920768

The four shift bump magnets (BUHS01-04) of the 3-GeV RCS in J-PARC, which are located at the long straight section, produce a fixed main bump orbit to merge the injection beam into the circulating beam. They are realized with four magnets connected in series to form the accurate closed bump orbit. However, the total integrated magnetic field of the four magnets is not zero because of the magnetic field interferences between the shift bump magnet and the adjacent quadrupole magnet (Q magnet). In order to decrease the imbalance of the integrated magnetic field, 0.3mm insulators were inserted at the median plane of the return yoke of the second and third shift bump magnets (BUHS02 and BUHS03). The integrated field has been decreased from 2358.0 Gauss-cm to -71.6 Gauss-cm, resulting in the closed orbit distortion of the beam to be decreases from 6.0 mm to less than 1.0 mm.

Application of clear polymethylmethacrylate dosimeter to several kGy range in radiation process control

Seito, Hajime; Kojima, Takuji; Kaneko, Hirohisa; Haneda, Noriyuki; Ichikawa, Tatsuya*; Sato, Yoshishige*; Watanabe, Hiroshi*

no journal, , 

no abstracts in English

Characteristics study of clear polymethylmethacrylate dosimeter, Radix W, in several kGy range

Ichikawa, Tatsuya*; Watanabe, Hiroshi*; Sato, Yoshishige*; Takehisa, Masaaki*; Seito, Hajime; Kojima, Takuji

no journal, , 

no abstracts in English

-ray response of clear PMMA dosimeter, Radix W, at low temperature

Ichikawa, Tatsuya*; Sato, Yoshishige*; Watanabe, Hiroshi*; Seito, Hajime; Nagao, Yuto

no journal, ,