Journal ArticleDOI
A honeycomb sandwich structure vacuum jacket for cryogenic targets
M. Harada,S. Kasai,S. Kato,T. Kitami,Takashi Maki,K. Maruyama,Yoshitada Murata,K. Niki,Chary Rangacharyulu,A. Sasaki +9 more
TLDR
In this paper, a new type of vacuum jacket, fabricated from plastic honeycomb core and Mylar skins, has been used in the target system for more than 5000 hours and measured the average radiation thickness and the average density of this jacket are measured to be 3.3 × 10 −3 X 0 and 0.15 g/cm 3, respectively.Abstract:
Cryogenic targets (H 2 , D 2 and 4 He) have been built for use in the study of photonuclear reactions with a π sr spectrometer, TAGX, at the 1.3 GeV Tokyo electron synchrotron. A new type of vacuum jacket, fabricated from plastic honeycomb core and Mylar skins, has been used in the target system for more than 5000 hours. The average radiation thickness and the average density of this jacket are measured to be 3.3 × 10 −3 X 0 and 0.15 g/cm 3 , respectively.read more
Citations
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Journal ArticleDOI
The large-acceptance spectrometer TAGX for photoreaction studies at the 1.3-GeV Tokyo electron synchrotron
K. Maruyama,G. Garino,S. Kato,Masanori Koike,Yoshitada Murata,M. Mutou,K. Niki,K. Yoshida,M. Asai,S. Asano,Ichita Endo,Satoru Endo,M. Harada,S. Kasai,K. Miyamoto,Y. Sumi,A. Sasaki,K. Hossain,Z. Papandreou,Hiromi Hasai,Kazuo Iwatani,A. Leone,Roberto Perrino,Y. Wada,T. Maki,F. Farzanpay,G. M. Huber,M. Iurescu,G.J. Lolos,A. Weinerman,A. Hisadomi,H. Itoh,S. Maruo,H. Murooka,R. Naridomi,T. Ogata,J.C. Kim,B. Lasiuk,Chary Rangacharyulu,Osamu Konno,A. Shinozaki,T. Terasawa,Hiromichi Yamazaki,Kazushige Maeda,Toshimi Suda,H. Shimizu,Tsuneo Emura,H. Hirosawa,K. Niwa,H. Miyamoto,K. Nagata,H. Yamashita +51 more
TL;DR: The TAGX spectrometer as discussed by the authors is a magnetometer-based multi-particle detector for light nuclei with the 20% duty-cycle tagged-photon beam at the 1.3-GeV Tokyo electron synchrotron.
Journal ArticleDOI
In-mediumρ0spectral function study via theH2,He3,C12(γ,π+π−)reaction
G. M. Huber,G. J. Lolos,Z. Papandreou,A. Shinozaki,E. J. Brash,M. Iurescu,G. Garino,K. Maruyama,Kazushige Maeda,Toshio Suda,A. Toyofuku,Byron K. Jennings,A. Sasaki,H. Yamashita +13 more
TL;DR: In this article, a helicity analysis of subthreshold (1,m = 0,n = 1,m=0) production on three nuclei at low photoproduction energies was performed, and the results are consistent with a strong helicity-flip production mechanism.
Journal ArticleDOI
In-Medium rho^0 Spectral Function Study via the 2H, 3He, 12C(gamma,pi+pi-) Reaction
G. M. Huber,G. J. Lolos,Z. Papandreou,A. Shinozaki,E. J. Brash,M. Iurescu,G. Garino,K. Maruyama,Kazushige Maeda,Toshio Suda,A. Toyofuku,Byron K. Jennings,A. Sasaki,H. Yamashita +13 more
TL;DR: In this article, a helicity analysis of sub-threshold rho^0 production on 2H, 3He and 12C at low photo-production energies is presented.
Journal ArticleDOI
Measurement of the 4He (γ, npp) n reaction in the Δ-resonance region
Tsuneo Emura,Ichita Endo,Satoru Endo,H. Itoh,Shigeaki Kato,Masafumi Koike,Kazushige Maeda,T. Maki,S. Maruo,K. Maruyama,Y. Murata,K. Niki,K. Niki,C. Rangacharyulu,A. Sasaki,Toshio Suda,Y. Sumi,Y. Wada,K. Yoshida +18 more
TL;DR: In this paper, the first kinematically complete measurement of the 4He(γ, npp)n reaction in the energy range of 135-455 MeV is presented, and the double-differential cross sections are compared with the calculations which assume that photons are absorbed either on two- or three-nucleon systems.
Journal ArticleDOI
A new type of liquid-3He target system using small mechanical refrigerators
S. Kato,Ken-ichiro Kobayashi,K. Maruyama,Hideki Okuno,Osamu Konno,Toshio Suda,Takashi Maki,H. Asami,T. Koizumi +8 more
TL;DR: In this paper, a new type of liquid-3 He target has been developed for photoabsorption experiments at intermediate energies using the cooling power of liquid 4 He at reduced vapour pressure, 3 He gas is liquefied into a cylindrical target cell of 180 ml and is maintained at 2.0 K during the experiment.
References
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The Topaz Inner Drift Chamber
A. Imanishi,Takehiko Ishii,S. Kato,K. Kono,K. Maruyama,H. Masuda,T. Morimoto,K. Norimura,T. Ohshima,Hideki Okuno,K. Shiino,Kumataro Ukai,Masakazu Yoshioka,Toshiaki Tauchi +13 more
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Journal ArticleDOI
Search for dibaryon resonances in photo-deuteron reactions
TL;DR: In this paper, the present status of nonstrange dibaryon resonances including two new data contributed to this conference is briefly surveyed, and a new γd experiment using a spectrometer, TAGX, with an acceptance of π sr at the 1.3 GeV Tokyo Electron Synchrotron (ES) is desribed.
Journal ArticleDOI
The Design and Construction of Transparent Vacuum Chambers for Interaction Areas of Colliding Beam Machines
TL;DR: The use of modern materials and specialized forming techniques have enabled the ISR Division at CERN to produce very transparent interaction area vacuum chambers as discussed by the authors, and the design and fabrication methods used to conceive and form these chambers are described.
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A Target System for \barpp and \barpd Total Cross-Section Measurement
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