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排序方式: 共有51条查询结果,搜索用时 15 毫秒
1.
当记者踏进中国工程物理研究院理论所院士办公室时,年逾九旬的俞大光院士已经早早赶来了。俞老慈眉善目、和蔼可亲,身着一件灰色的袖口和肘部都已经磨得起毛的老式中山服,洗得非常干净,风纪扣也扣得整齐。当他把一 相似文献
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MA Yong-zhe WANG Hua-rong XU Xian ZHANG Pei-sheng 《中国原子能科学研究院年报》2006,(1):151-152
This paper introduces design and manufacture of fuel assembly for UO2 pellets irradiation program. The advanced UO2 pellet is large grained and is sintered with addictives of Al2O3/SiO2/Cr2O3. It will decrease the release rate of fission gas, reduce the PCI and inner pressure of the fuel rods, in result it will increase discharge bumup and extend loading period of fuel rod. The performance of large grain pellet must be proved through in-pile test. 相似文献
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据《Gas Turbine World》2007年3~4月号报道,南非Eskom拟2008年建造一台165MW闭式循环氦气轮机示范装置,于2012年启动运行,该装置将由高温氦气冷却卵石床模块式反应堆供给动力。 相似文献
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The vacuum system for HL-2A was built in 2003. The test results indicated that this system is feasible. It consists of three main parts: a pumping system, a pumping divertor and a glow discharge cleaning (GDC) system. For the pumping system, there are three main functions: (1) evacuating the vacuum vessel thus to produce an ultra high vacuum, (2) removal of impurities released during baking and (3) pumping during GDC. The pumping divertor controls the particles at the plasma edge and the GDC system provides a clean wall conditioning. During the first campaign of physical trial experiment on HL-2A, the ultimate pressure reached 4.6 × 10-6 Pa, and the total leakage and outgassing rate in 12 hours was 1.8 × 10-5 Pa·m3/s, which is close to that of ASDEX. 相似文献
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The design of the control system for radial plasma position on HL-2A based on model reference adaptive control (MRAC) principle is presented in this paper. The simulated results show that it can be used to improve the performance of the system greatly. Compared with the classical PID control system, it has obvious advantages in the better dynamic response, the smaller quantity of calculation and the better robustness. 相似文献
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I.Vinyar A.Geraud H.Yamada R.Sakamoto Y.Oda A.Lukin A.Umov S.Skoblikov G.Gros G.Saksaganskii P.Reznichenko I.Krasilnikov V.Panchenko 《等离子体科学和技术》2004,6(3):2286-2290
Pneumatic and centrifugal injectors for steady-state plasma refuelling by solid hydrogen, deuterium and tritium pellets have been designed at the PELIN Laboratory to meet requirements of LHD, TORE SUPRA, and ITER. Presented here is a review of these injectors‘ designs and results. 相似文献
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A PIC (particle-in-cell)-MC (Monte Carlo) code to model electron beam transport into dense matter is developed. The background target is treated as a cold, stationary fluid and the fast electrons as particles with the relativistic motions. The process is described by a particle-in-cell method with consideration of the influence of both the self-generated electric and magnetic fields as well as collisions between the fast electrons and the target. The collisional part of the code is solved by the Monte Carlo-type method. Furthermore by assuming that the background current balances with the fast electron current, the electric field is given by the Ohm's law and the magnetic field is calculated from the Faraday's law. Both are solved in a two-dimensional cylindrical geometry. The algorithms implemented in the code are demonstrated and the numerical experiments are performed for monoenergy homogeneous fast electron beam transport in an aluminum target when the fields, collision and angular scattering are switched on and off independently. 相似文献