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Disruption design criteria for JET in-vessel components JET容器内部件的破坏设计标准
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027718
V. Riccardo, P. Andrew, A. Kaye, P. Noll
{"title":"Disruption design criteria for JET in-vessel components","authors":"V. Riccardo, P. Andrew, A. Kaye, P. Noll","doi":"10.1109/FUSION.2002.1027718","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027718","url":null,"abstract":"In view of the substantial modification in the JET plasma facing components foreseen for the 2004 shutdown, the design criteria for in-vessel components have been updated building up on the operational experience with divertor plasmas gained since the early '90s. Typically the most demanding design loads occur during disruptions and vertical displacement events (VDEs). In fast disruptions (e.g. density limit driven) the largest contribution to the loads comes from currents induced by fast change of the poloidal field, which tends to be proportional to the plasma current decay rate, the maximum of which has been observed to be linear with the pre-disruption plasma current. This implies that in the fastest events the current quench has a fixed duration at JET, about 10 ms. Usually VDEs take place on a longer time scale, and therefore halo currents determine the worst loading condition in these cases. Analysis of recent VDE data confirmed the previously observed magnitude of asymmetries: the toroidal peaking factor (TPF) up to 1.8 in upward VDEs and up to 1.4 in downward VDEs; the ratio average poloidal halo to initial plasma current (f) up to 23% in upward VDEs and up to 30% in downward VDEs. Experimental evidence to justify the new criteria and recipes on how to apply them to JET are included. The data used for the revision of the design criteria are discussed and compared with the assumptions used in the design of the components already present in the JET vacuum vessel.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"91 1","pages":"384-387"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80520710","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: 7
Design and engineering of the Alcator C-Mod lower hybrid current drive system alcater C-Mod低混合电流驱动系统的设计与工程
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027632
G. Loesser, J. Rushinski, S. Bernabei, J. Hosea, J. Wilson, B. Beck, R. Parker
{"title":"Design and engineering of the Alcator C-Mod lower hybrid current drive system","authors":"G. Loesser, J. Rushinski, S. Bernabei, J. Hosea, J. Wilson, B. Beck, R. Parker","doi":"10.1109/FUSION.2002.1027632","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027632","url":null,"abstract":"The PSFC group of MIT and PPPL are jointly developing a Lower Hybrid Current Drive (LHCD) system for installation on the Alcator C-Mod tokamak, with the primary goal of driving plasma current. Twelve Klystrons will feed a coupler with an input power of 3 MW at 4.6 GHz and a pulse length of 5 seconds. The coupler is composed of 4 arrays, each with 24 wave-guides (96 total) which are stacked poloidally and are symmetric about both the vertical and horizontal planes. The four-stacked arrays are installed through a single equatorial port and can be axially adjusted to provide optimum plasma coupling. Material selections and spatial limitations required innovative design solutions that will be described.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"8 1","pages":"20-22"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80693699","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
The NSTX trouble reporting system NSTX故障报告系统
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.2172/795714
S. Sengupta, G. Oliaro
{"title":"The NSTX trouble reporting system","authors":"S. Sengupta, G. Oliaro","doi":"10.2172/795714","DOIUrl":"https://doi.org/10.2172/795714","url":null,"abstract":"An online trouble reporting system (TRS) has been introduced at NSTX. The TRS is used by NSTX operators to report problems that affect NSTX operations. The purpose of the TRS is to enhance NSTX reliability and maintainability by identifying components, occurrences, and trends that contribute to machine downtime. All NSTX personnel have access to the TRS. The user interface is via a Web browser, such as Netscape or Internet Explorer. This Web-based feature permits any X-terminal, PC, or MAC access to the TRS. The TRS is based upon a trouble reporting system developed at the DIII-D Tokamak, at General Atomics Technologies (Petersen and Miller, 1991). This paper provides a detailed description of the TRS software architecture, user interface, MS SQL server interface and operational experiences. In addition, sample data from the TRS database are summarized and presented.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"13 1","pages":"242-244"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83808766","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
Status and plan of the HL-2A project HL-2A项目的现状和计划
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027735
Jiancheng Yan, C. Zhou, Yong Liu, Dequan Liu
{"title":"Status and plan of the HL-2A project","authors":"Jiancheng Yan, C. Zhou, Yong Liu, Dequan Liu","doi":"10.1109/FUSION.2002.1027735","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027735","url":null,"abstract":"This paper describes the outline of HL-2A project that is the first tokamak with a divertor in China. The recent achievements in the construction of the HL-2A tokamak is given. The development of major components and the installation of the machine are also described. The commissioning of HL-2A machine will start from the middle of 2002. The HL-2A experimental program and the future plan are sketched.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"1 1","pages":"461-464"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77500906","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
Modeling of mirror surface damage effects on beam performance in a laser-driven IFE power plant 激光驱动IFE电站镜面损伤对光束性能影响的建模
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027657
T. Mau, M. Tillack, M. Zaghloul
{"title":"Modeling of mirror surface damage effects on beam performance in a laser-driven IFE power plant","authors":"T. Mau, M. Tillack, M. Zaghloul","doi":"10.1109/FUSION.2002.1027657","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027657","url":null,"abstract":"Grazing incidence metal mirrors in laser-driven IFE power plants are subject to a variety of threats that result in damages leading to increased laser absorption, beam quality degradation and reduced laser-induced damage threshold. In this paper, we analyze the mirror reflectivity changes and wavefront distortions incident on the target using several modeling approaches, depending on the nature and size of the damage. We have developed a four-layer Fresnel solver to quantify the dependence of reflectivity on the thickness of surface contaminant and mirror protective coating, and their material properties, for a relevant range of incident angles. With a lossy contaminant like carbon, it is found that reflectivity decreases with thickness mainly due to surface dissipation, but this deleterious effect is diminished towards grazing incidence. For defect size small with respect to a wavelength, we have used Kerchhoff's wave scattering theory to evaluate degradation of the beam performance.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"8 1","pages":"118-121"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72635874","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: 4
Nuclear considerations for FIRE 对FIRE的核考虑
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027675
M. Sawan, H. Khater
{"title":"Nuclear considerations for FIRE","authors":"M. Sawan, H. Khater","doi":"10.1109/FUSION.2002.1027675","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027675","url":null,"abstract":"Nuclear analyses have been performed for the baseline design of the Fusion Ignition Research Experiment (FIRE). Nuclear heating, structural radiation damage, and magnet insulator dose were evaluated. Critical issues requiring additional R&D effort include low-temperature embrittlement of copper and identifying insulators that can handle a dose as high as 1.5/spl times/10/sup 10/ Rads under the FIRE load conditions. Activation calculations were performed to determine the amount of radioactivity and decay heat generated. Accessibility for hands-on maintenance was assessed. All components qualify as low level waste.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"60 1","pages":"196-199"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90949638","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
Design of the P2001 ECH launcher for DIII-D 用于DIII-D的P2001 ECH发射器的设计
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027660
R. Ellis, J. Hosea, J. Wilson, L. Gereg, R. Prater, R. Callis, H. Grunloh
{"title":"Design of the P2001 ECH launcher for DIII-D","authors":"R. Ellis, J. Hosea, J. Wilson, L. Gereg, R. Prater, R. Callis, H. Grunloh","doi":"10.1109/FUSION.2002.1027660","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027660","url":null,"abstract":"ECH launchers typically use a moveable mirror to steer a gyrotron beam. Increased power handling capability in an ECH launcher requires adding mass or active cooling to the mirrors. The additional forces on the moveable mirror resulting from either approach typically require a compromise between the power handling capability and the steering capability. The P2001 launcher, designed by PPPL for DIII-D, will launch two 800kW beams for 10 seconds every 10 minutes. Fully independent poloidal and toroidal steering during and between pulses, and a fast poloidal scan capability, will be provided. These design requirements are satisfied by the use of an innovative steering mechanism, which covers the entire scanning range about two axes and is strong enough to withstand the electromagnetic forces on the mirror. An innovative mirror design uses high thermal conductivity materials arranged in a manner that limits the eddy currents during a disruption. In this paper, the design of the P2001 launcher is presented, along with performance calculations. Design features relevant to advanced fusion experiments are highlighted and discussed.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"11 1","pages":"133-136"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91298336","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: 3
Advanced Material Tokamak EXperiment (AMTEX) on JFT-2M - design, fabrication, installation and conditioning of inside ferritic steel wall JFT-2M上的先进材料托卡马克实验——铁素体钢内壁的设计、制作、安装和调试
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027712
T. Shibata, T. Akiyama, N. Isei, H. Kawashima, H. Kimura, K. Miyachi, F. Okano, M. Sato, S. Suzuki, K. Tsuzuki, M. Yamamoto
{"title":"Advanced Material Tokamak EXperiment (AMTEX) on JFT-2M - design, fabrication, installation and conditioning of inside ferritic steel wall","authors":"T. Shibata, T. Akiyama, N. Isei, H. Kawashima, H. Kimura, K. Miyachi, F. Okano, M. Sato, S. Suzuki, K. Tsuzuki, M. Yamamoto","doi":"10.1109/FUSION.2002.1027712","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027712","url":null,"abstract":"On JFT-2M, to investigate whether low-activation ferritic steel (F82H) can be used as a structural material of the demonstration reactor, the Advanced Material Tokamak EXperiment (AMTEX) is being carried out step by step. The AMTEX program consists of three stages. In the 1st stage, the low-activation ferritic steel plates (FPs) were inserted between the vacuum vessel (VV) and the toroidal field coils (TFCs) to reduce the toroidal field ripple. In the 2nd stage, the pre-testing of compatibility with plasma was carried out by partially installing the FPs in the inside of VV. In the 3rd (final) stage, the testing of compatibility with plasma will be carried out by a full covering of the FPs on the inside of VV.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"26 1","pages":"360-363"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73057066","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
Mechanical design of the ICRH antenna for JET-EP JET-EP中ICRH天线的机械设计
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027653
R. Walton, G. Agarici, G. Amarante, W. Baity, B. Beaumont, S. Bremond, F. Durodié, J. Fanthome, R. Goulding, J. Heikkinen, A. Kaye, R. Koch, P. Lamalle, G. Mazzone, J. Noterdaeme, V. Riccardo, M. Roccella, C. Sborchia, P. Testoni, P. Tigwell, K. Vulliez
{"title":"Mechanical design of the ICRH antenna for JET-EP","authors":"R. Walton, G. Agarici, G. Amarante, W. Baity, B. Beaumont, S. Bremond, F. Durodié, J. Fanthome, R. Goulding, J. Heikkinen, A. Kaye, R. Koch, P. Lamalle, G. Mazzone, J. Noterdaeme, V. Riccardo, M. Roccella, C. Sborchia, P. Testoni, P. Tigwell, K. Vulliez","doi":"10.1109/FUSION.2002.1027653","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027653","url":null,"abstract":"The JET-EP antenna is designed to verify the design principles of that proposed for ITER, in relevant plasma conditions. It is intended to launch 7.2 MW of RF power to the plasma of the JET machine during its 'Enhanced Performance' program, at a power density of around 8 MW/m/sup 2/. The antenna comprises two poloidal current straps, each subdivided into four electrically short straps complete with in-vessel capacitors. The antenna is supported via a cantilever support box to the external support structure. This plug-in, through-port type assembly is clamped to the vacuum vessel externally. The antenna itself is fitted remotely. External rails and bellows allow radial positioning of the assembly. Eight capacitors are situated just behind the short antenna current straps. Plug-in replacement of the capacitors is performed through the vacuum vessel port.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"22 1","pages":"103-106"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89456044","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
Upgrade to the Tritium Remote Control and Monitoring System for TFTR D&D TFTR研发氚远程控制与监控系统的升级
IF 0.4 1区 艺术学
NINETEENTH CENTURY MUSIC Pub Date : 2002-11-07 DOI: 10.1109/FUSION.2002.1027690
P. Sichta, G. Oliaro, S. Sengupta
{"title":"Upgrade to the Tritium Remote Control and Monitoring System for TFTR D&D","authors":"P. Sichta, G. Oliaro, S. Sengupta","doi":"10.1109/FUSION.2002.1027690","DOIUrl":"https://doi.org/10.1109/FUSION.2002.1027690","url":null,"abstract":"Since 1988, the Tritium Remote Control and Monitoring System (TRECAMS) has performed crucial functions in support of D-T operations of the Tokamak Fusion Test Reactor (TFTR) at the Princeton Plasma Physics Laboratory (PPPL). Although plasma operations on TFTR were completed in 1997, the need for TRECAMS continued. During this period TRECAMS supported the TFTR tritium systems, the TFTR's shutdown and safing phase, and the TFTR Decontamination and Decommissioning (D&D) project. The most critical function of the TRECAMS in the post-TFTR era has been to provide a real-time indication of the airborne tritium levels in the tritium areas and the (HVAC) stacks. TRECAMS is a critical tool in conducting safe TFTR D&D tritium-line breaks and other tritium-related work activities.","PeriodicalId":44192,"journal":{"name":"NINETEENTH CENTURY MUSIC","volume":"33 1","pages":"260-263"},"PeriodicalIF":0.4,"publicationDate":"2002-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90438534","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
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