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Morishita, Takatoshi; Ao, Hiroyuki; Ito, Takashi; Ueno, Akira; Hasegawa, Kazuo; Ikegami, Masanori*; Kubota, Chikashi*; Naito, Fujio*; Takasaki, Eiichi*; Tanaka, Hirokazu*; et al.
Proceedings of 2005 Particle Accelerator Conference (PAC '05) (CD-ROM), p.2851 - 2853, 2005/00
In J-PARC linac, a precise alignment of accelerator components is essential for high quality beam acceleration. Markings have been placed on the floor, which act as a reference for the initial alignment at the installation. For a straight line alignment, the wire position sensor is placed on the offset position with respect to the beam center by a target holder. The hydrostatic levering system is used for watching the floor elevation over the long period.
Meigo, Shinichiro; Noda, Fumiaki*; Fujimori, Hiroshi*; Ikeda, Yujiro
Proceedings of ICANS-XVI, Volume 3, p.967 - 976, 2003/07
In J-PARC project, spallation target is irradiated by 3 GeV proton beam of 1 MW. Due to hands on maintenance for the proton beam lines, loss of proton beam is limited less than 1 W/m. Since it is difficult to predict the phase space distribution of the proton beam, we decided that the beam line have to be larger acceptance for 324 
mrad, which is determined by the collimator located in the synchrotron. Distortion of proton beam is caused by the by the instability of angle at the extraction of 3-GeV synchrotron, miss alignment of the magnet, and un-uniformity of the magnet field. In this study, the distortion is calculated. In order to fit the conditions, the stability of extraction angles should be kept smaller than 0.2 mrad. As for the magnetic field, it is found that the uniformity should be kept better 5x10
and 2x10
for bending and quadruple magnets, respectively. It is also found the error of alignments should be limited smaller than 1.0 mm and 1.0 mrad.
Yamazaki, H.*; Yabashi, Makina*; Tamasaku, Kenji*; Yoneda, Yasuhiro; Goto, Shunji*; Mochizuki, Tetsuro*; Ishikawa, Tetsuya*
Nuclear Instruments and Methods in Physics Research A, 467-468(Part1), p.643 - 646, 2001/07
Times Cited Count：7 Percentile：48.68(Instruments & Instrumentation)no abstracts in English
Yoshida, Hidetoshi; Naito, Osamu; Yamashita, Osamu; Kitamura, Shigeru; *; *; *; *; Hatae, Takaki; Nagashima, Akira; et al.
Review of Scientific Instruments, 70(1), p.751 - 754, 1999/01
Times Cited Count：15 Percentile：68.26(Instruments & Instrumentation)no abstracts in English
J.Eichler*; Ichihara, Akira; Shirai, Toshizo
Physical Review A, 58(3), p.2128 - 2135, 1998/09
Times Cited Count：38 Percentile：83.68(Optics)no abstracts in English
T.Stoehlker*; J.Eichler*; Ichihara, Akira; Shirai, Toshizo; R.W.Dunford*; T.Ludziejewski*; P.Rymuza*; Z.Stachura*; P.Swiat*; A.Warczak*; et al.
Physical Review Letters, 79(17), p.3270 - 3273, 1997/10
Times Cited Count：65 Percentile：89.89(Physics, Multidisciplinary)no abstracts in English
Yoshida, Hidetoshi; Naito, Osamu; Matoba, Toru; Yamashita, Osamu; Kitamura, Shigeru; Hatae, Takaki; Nagashima, Akira
Review of Scientific Instruments, 68(2), p.1152 - 1161, 1997/02
Times Cited Count：13 Percentile：68.13(Instruments & Instrumentation)no abstracts in English
Sawamura, Masaru; Nagai, Ryoji; Kikuzawa, Nobuhiro; Nishimori, Nobuyuki; Minehara, Eisuke
Free Electron Laser and Its Application in ASIA, p.195 - 199, 1997/00
no abstracts in English
Narumi, Issei; Watanabe, Hiroshi
Gene, 172, p.117 - 119, 1996/00
Times Cited Count：4 Percentile：13.12(Genetics & Heredity)no abstracts in English
Sasuga, Tsuneo; Kawanishi, Shuichi; Takehisa, Masaaki
J.Phys.Chem., 88(15), p.3326 - 3329, 1984/00
no abstracts in English
Sasuga, Tsuneo; Kawanishi, Shuichi; Takehisa, Masaaki
Macromolecules, 16, p.545 - 548, 1983/00
Times Cited Count：1 Percentile：14.41(Polymer Science)no abstracts in English
Kawanishi, Shuichi; Takehisa, Masaaki
J.Macromol.Sci.,Part A, A14(4), p.605 - 615, 1980/00
no abstracts in English
Sasuga, Tsuneo; Kawanishi, Shuichi; Takehisa, Masaaki
J.Phys.Chem., 83(25), p.3290 - 3293, 1979/00
no abstracts in English
Sasuga, Tsuneo
JAERI-M 7485, 93 Pages, 1978/01
no abstracts in English
Sasuga, Tsuneo; Takehisa, Masaaki
J.Macromol.Sci.,Part A, 12(9), p.1307 - 1319, 1978/00
no abstracts in English
Sasuga, Tsuneo; Takehisa, Masaaki
J.Macromol.Sci.,Part A, 12(9), p.1321 - 1331, 1978/00
no abstracts in English
Sasuga, Tsuneo; Takehisa, Masaaki
J.Macromol.Sci.,Part A, 12(9), p.1333 - 1342, 1978/00
no abstracts in English
Yokoyama, Atsushi
no journal, ,
Bustard et al. proposed a technique for molecular alignment and orientation named a hybrid Raman scattering technique, in which a weak, linearly polarized short pump pulse creates a rotational coherence, and then a circularly polarized amplification pulse enhances the rotational coherence by transient stimulated Raman scattering. We simulate the degree of alignment for N
by solving time-dependent Schr
dinger equations and examined the possibility of the enhancement by this technique. The degree of alignment is enhanced, when right-circularly polarized photons scatters to left-circularly polarized photon. On the other hand, it is suppressed when left-circularly polarized photons scatters to right-circularly polarized photon.
