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Velocity Acceptance Performance of Superconducting Cavities in Proton Linacs
YU Qing-chang
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS    2003, 20 (4): 331-334.  
Abstract218)      PDF (190KB)(1029)      
The proton energy gain in multicell π-mode accelerating cavities and transit time factors of the cavities are given. On the basis the velocity acceptance of the superconducting cavities is studied by means of analytical method and numerical method, and the problem about the section-division of superconducting proton linacs are discussed.
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NUMERICAL RESEARCH OF PLASMA EQUILIBRIUM IN TOKAMAK
ZHA Xue-jun, ZHU Si-zheng, YU Qing-quan
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS    2002, 19 (5): 413-418.  
Abstract353)      PDF (259KB)(1322)      
To design the HT-7U supper conducting Tokamak, the non-z-symmetric equilibrium code EQ is extended and improved.Moreover, the code is checked by using the reconstructed equilibrium code EFIT from GA in America.
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THE BEM FOR SOME PROBLEMS IN SOLAR PHYYSICS
Yu qin, Kang Fong, Yan Yihua
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS    1992, 9 (4): 477-478.  
Abstract209)      PDF (162KB)(968)      
The BEM is introduced and applied to solar magnetic force-free field problems. So that the magnetic structure above the sun can be analyzed directly from the observational data. The agreement between calculation and observation shows that the BEM is a useful tool to the solar physics.
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