NINETEENTH CENTURY MUSIC最新文献_第2页

Inner divertor detailed design and manufacturing 内分流器的详细设计与制造

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027635

J. Zaks, M. DeMaria, B. LaBombard, R. Granetz, E. Fitzgerald, H. Savelli, P. Stahle

引用次数: 1

Operating limits of the upgraded JET neutral beam injector from duct re-ionisation and beam shine-through 升级后的JET中性束喷射器在管道再电离和光束穿透下的工作限制

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027642

S. Cox, A. Bickley, T. Jones, J. Milnes

{"title":"Operating limits of the upgraded JET neutral beam injector from duct re-ionisation and beam shine-through","authors":"S. Cox, A. Bickley, T. Jones, J. Milnes","doi":"10.1109/FUSION.2002.1027642","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027642","url":null,"abstract":"Physics modelling and engineering analysis have been carried out to determine the operating limits of the upgraded JET neutral beam injector from duct re-ionisation and beam shine-through. The JET neutral beam duct is only 23cm wide and 90cm tall at its throat and yet it presently has to transmit more than 11MW of D/sup 0/ beam particles, resulting in power densities in excess of 200MW/m/sup 2/. Even at this power level, the copper duct liner can be the limiting component with respect to the pulse length of the Octant 4 injector, depending on plasma current and power. The upgrade to the Octant 8 injector in 2002 will increase the power to /spl sim/15MW of D/sup 0/ at 130kV, so it is necessary to determine the new limits. It is shown that at full power, the duct will become the major limiting component with respect to pulse length for this injector. The shine-through power density and integrated energy for various in-vessel components have also been evaluated for the upgraded injector. Thermo-mechanical finite element stress calculations on elements of the ICRH antenna show that the injector can be operated at full power without further restrictions being imposed on the plasma characteristics, e.g. density and shape. For the CFC inner wall guard limiter tiles and their internal reinforcement, however, there is a bulk temperature limit and an enhancement to the existing real-time protection system is proposed.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74326920","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Development of an intelligent digital integrator for long-pulse operation in a tokamak 托卡马克长脉冲操作智能数字积分器的研制

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027669

Y. Kawarnata, I. Yonekawa, K. Kurihara

引用次数: 12

Design, development and operation of superconducting system for LHD LHD超导系统的设计、开发与运行

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027663

T. Mito, A. Nishimura, S. Yamada, S. Imagawa, K. Takahata, N. Yanagi, R. Maekawa, H. Chikaraishi, H. Tamura, A. Iwamoto, S. Hamaguchi, Y. Hishinuma, T. Satow, O. Motojima

{"title":"Design, development and operation of superconducting system for LHD","authors":"T. Mito, A. Nishimura, S. Yamada, S. Imagawa, K. Takahata, N. Yanagi, R. Maekawa, H. Chikaraishi, H. Tamura, A. Iwamoto, S. Hamaguchi, Y. Hishinuma, T. Satow, O. Motojima","doi":"10.1109/FUSION.2002.1027663","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027663","url":null,"abstract":"The Large Helical Device (LHID) of National Institute for Fusion Science (NIFS) is a heliotron-type experimental fusion device which has the capability of confining current-less and steady-state plasma. The primary feature on the engineering aspect of LHD is using superconducting coils for magnetic confinement: two pool boiling helical coils (H1, H2) and three pairs of forced-flow poloidal coils (IV, IS, OV) wound with cable-in-conduit conductors (CICC). The maximum magnetic field at plasma center is 3 T in the Phase I experiment and 4 T in Phase II, while its stored energy becomes 0.9 GJ and 1.6 GJ, respectively. These coils are connected to the power supplies by superconducting bus-lines with their nominal current of 31.3 kA. The construction of LHD started in 1991 and was completed by the end of 1997. During this period, extensive research and development were conducted to complete a large-scale superconducting system. The plasma experiment started on March 31, 1998 and four plasma experimental campaigns have been performed successfully in three years. The fifth cycle operation started in August 2001. The knowledge which has been acquired during the design, development, and operation of superconducting system for LHD, is summarized.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84205479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Challenges for plasma diagnostics in a next step device (FIRE) 下一步设备中等离子诊断的挑战(FIRE)

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027674

K. Young

{"title":"Challenges for plasma diagnostics in a next step device (FIRE)","authors":"K. Young","doi":"10.1109/FUSION.2002.1027674","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027674","url":null,"abstract":"The physics program of any next step tokamak such as FIRE sets demands for plasma measurement which are at least as comprehensive as on present tokamaks, with the additional capabilities needed for control of the plasma and for understanding the effects of the alpha-particles. The diagnostic instrumentation must be able to provide the fine spatial and temporal resolution required for the advanced tokamak plasma scenarios. It must also be able to overcome the effects of neutron- and gamma-induced electrical noise in ceramic components or detectors, and fluorescence and absorption in optical components. There are practical engineering issues of minimizing radiation streaming while providing essential diagnostic access to the plasma. Many diagnostics will require components at or close to the first wall, e.g. ceramics and MI cable for magnetic diagnostics and mirrors for optical diagnostics; these components must be mounted to operate, and survive, in fluxes which require special material selection. A better set of diagnostics of alpha-particles than that available for TFTR is essential; it must be qualified well before moving into D-T experiments. A start has been made to assessing the potential implementation of key diagnostics for the FIRE device. The present status is described.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82074587","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Design of the NSTX heating and cooling system NSTX加热和冷却系统的设计

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027682

M. Kalish, M. Cropper, C. Neumeyer, R. Parsells, L. Dudek, A. Klink, L. Morris

{"title":"Design of the NSTX heating and cooling system","authors":"M. Kalish, M. Cropper, C. Neumeyer, R. Parsells, L. Dudek, A. Klink, L. Morris","doi":"10.1109/FUSION.2002.1027682","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027682","url":null,"abstract":"NSTX requires that its internal plasma facing components (PFCs) reach 350/spl deg/C during \"bakeout\" conditioning of the vacuum vessel. This paper describes a helium system designed to meet this requirement as well as provide cooling during plasma operations. The NSTX vacuum vessel's PFCs were designed to be heated or cooled by flowing a fluid medium through tubing attached to the PFC's copper backing plates. The heating/cooling system must move enough fluid at a sufficient rate with a high enough heat capacity through these restrictive paths. After the evaluation of several approaches including the use of heat transfer oils and steam, a compressed helium system was determined to be the optimal choice. The helium system utilizes a blower operating inside of a pressure vessel. This arrangement allows the base pressure to be raised to 20 atmospheres. With the system pressure elevated, the helium blower need only provide the motive force for overcoming 28 psi of friction losses and is not encumbered with compressing the gas. At 20 atmospheres the density of the helium is high enough to provide the heat capacity necessary to meet the NSTX requirements of 66 kW for heating and 82 kW for cooling. The paper will detail the unique design problems associated with a high pressure high temperature helium system as well as review the overall design, and modes of operation.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84631461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Toroidal Field Model Coil geometry survey 环形场模型线圈几何测量

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027678

C. Talarico, A. Lo Bue, L. Semeraro, F. Hurd, C. Cassani

{"title":"Toroidal Field Model Coil geometry survey","authors":"C. Talarico, A. Lo Bue, L. Semeraro, F. Hurd, C. Cassani","doi":"10.1109/FUSION.2002.1027678","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027678","url":null,"abstract":"The Toroidal Field Model Coil (TFMC) is a 36 tons \"race-track\" shaped coil about 4 m high and 3 m wide scaled with respect to the full-size ITER TF coils and including the key technical features and manufacturing approaches foreseen for the actual ITER TF coils. The objective of the TFMC Project is to develop and demonstrate the superconducting magnet technology to a level that will allow the ITER TF coils to be built with confidence. The TFMC has been installed in the TOSKA facility (Forschunszentrum Karlsruhe, Germany) after assembling the TFMC into a 27 tons stainless steel Intercoil Structure which interfaces the TFMC to the TOSKA facility. Due to the complexity of the assembly operations, and in order to avoid any trial-and-error assembly process with the associated loss of time and waste of resources, computer simulations have been extensively used. Additionally, starting from 3D CATIA models, a laser tracking technique has been utilized to retrieve as built geometry data of each sub assembly. The raw data have been analyzed and combined to verify the assembly procedure and to identify corrective actions before the real installation. The whole survey has been accomplished by ENEA during three different survey campaigns carried out at Alstom (Belfort, France) and at Forschungszentrum Karlsruhe (FZK, Karlsruhe, Germany) sites. The implementation of the data resulted in the TFMC being installed with no loss of time due to modifications to components previously measured and analyzed by the method reported here. This paper illustrates the geometry survey, the method and the instrumentation adopted and the results obtained. Moreover, it gives guidelines to the designer to be taken into account in the assembly planning of large and heavy components.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84016913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Seismic analysis of the KSTAR tokamak KSTAR托卡马克的地震分析

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027640

H. Ahn, Y.W. Lee, Y. Kim, J. Bak, G.S. Lee

{"title":"Seismic analysis of the KSTAR tokamak","authors":"H. Ahn, Y.W. Lee, Y. Kim, J. Bak, G.S. Lee","doi":"10.1109/FUSION.2002.1027640","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027640","url":null,"abstract":"The objectives of this analysis are to investigate the structural integrity of the KSTAR (Korea Superconducting Tokamak Advanced Research) device for the design earthquake and to enhance its aseismic performance. Three-dimensional finite element beam-shell models of the vacuum vessel, cryostat, and pumping ducts were developed and spectrum analyses based on the floor response spectra for the KSTAR building were carried out separately for each finite element model. Natural frequencies, seismic displacements and stress intensities were determined and effective seismic accelerations for the static analysis were also calculated by using the reaction forces at the fixed points. From a comparative study on the two kinds of seismic analyses (spectrum and static), equivalent static earthquake loads were verified for the detailed structural analysis. The results reveal that effective seismic accelerations in the horizontal direction are three times greater than the peak ground acceleration (PGA) and those in the vertical direction are less than two times of PGA. It can also be shown that the maximum stress intensities are less than 20% of the allowable stress limit specified in the ASME Boiler and Pressure Vessel Code.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":null,"pages":null},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87475725","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"艺术学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Progress of HT-7U superconducting tokamak HT-7U超导托卡马克的研究进展

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027695

Weng Peide

引用次数: 1

Comparison of radwaste volume and hazard in liquid wall and conventional solid wall concepts 液体壁与传统固体壁概念中放射性废物体积和危害的比较

IF 0.4 1区艺术学

NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027668

M. Youssef, M. Sawan, H. Khater

引用次数: 0