Results 1 - 10 of 333

Effect of confining pressure on ballast degradation and deformation under cyclic triaxial loading

by J. Lackenby, Buddhima Indraratna, G. Mcdowell, D. Christie - Geotechnique , 2007
"... and deformation under cyclic triaxial loading ..."
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and deformation under cyclic triaxial loading

study on Degradation of Energy confinement on L-2M Stellarator

by Oleg I Fedyanin , Diana K Akulina , BATANOv Emma D Andryukhina , German M Berezhetskii , Mikhail S , Gladkov Georgii , A , Grebenshchikov Stanislav , E Kharchev , KHoLNov yury v., KOLIK Nikolai K , Leonid V , Kovrizhnykh Lev , M Larionova , Nataly F , Meshcheryakov Aleksey , I , Karen A Sbitnikova , Irina S , Shchepetov Sergey , V
"... Abstract Power degradation has been observed in ECRH experiments on stellarators [1][2][3][4][5]. In order to find out characteristic features of the degradation phenomenon, experiments of the following three types were run in the L-2M stellarator: (a) Global analysis of stationary phases, which mi ..."
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might present evidence of the power degradation of confinement and the incremental confinement time; (b) Study of dynamic phases with stepping the heating power by its relatively small portion; (c) Study of transition from the heating phase to the free-decay phase.

Sensitivity of the ITER Operating Window to Var iation of Transpor t, Magnetic Field, and Elongation

by G. W. Pacher, H. D. Pacher, G. Janeschitz, Iter Team, Cadarache Fzk-pl-fusion
"... This paper investigates the effect of H-mode confinement degradation in the operational space of ITER due to: a) the absence of toroidal rotation. b) reduced field operation for the hypothetical case that superconductor performance ..."
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This paper investigates the effect of H-mode confinement degradation in the operational space of ITER due to: a) the absence of toroidal rotation. b) reduced field operation for the hypothetical case that superconductor performance

PRODUCTION OF SECONDARY PRODUCTS IN CONFINED ATMOSPHERES

by Sylvain Courtey, Patrice Blondeau, Francis Allard
"... Confined environments are indoor spaces which are not ventilated or few ventilated due to specific use (shelters, submarines …). In such environments, homogeneous and heterogeneous chemistry are expected to play a key role in indoor air quality (IAQ). The paper presents a representative example of t ..."
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Confined environments are indoor spaces which are not ventilated or few ventilated due to specific use (shelters, submarines …). In such environments, homogeneous and heterogeneous chemistry are expected to play a key role in indoor air quality (IAQ). The paper presents a representative example

Fault confinement mechanisms on CAN : analysis and improvements

by Bruno Gaujal, Nicolas Navet - in « IEEE Transactions On Vehicular Technology , 2004
"... Abstract — The CAN protocol possesses fault confinement mechanisms aimed at differentiating between short disturbances caused by electromagnetic interferences (EMI) and permanent failures due to hardware dysfunctioning. In this study, we derive a Markovian analysis of these mechanisms which enable t ..."
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Abstract — The CAN protocol possesses fault confinement mechanisms aimed at differentiating between short disturbances caused by electromagnetic interferences (EMI) and permanent failures due to hardware dysfunctioning. In this study, we derive a Markovian analysis of these mechanisms which enable

Confinement bifurcation by magnetic compression on TUMAN-3

by S V Lebedev , M V Andreiko , L G Askinazi , V E Golant , V A Kornev , S V Krikunov , L S Levin , V V Rozhdestvensky , N V Sakharov , K G Shakhovets , A I Smirnov , A S Tukachinsky , M I Vild'junas , N A Zhubr
"... INTRODUCTION Experiments on magnetic compression on different tokamaks have shown superadiabatic increases in the plasma parameters On TUMAN-3 the both enhancement and degradation of the confinement were observed in the minor radius magnetic compression experiments In this paper the results of th ..."
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INTRODUCTION Experiments on magnetic compression on different tokamaks have shown superadiabatic increases in the plasma parameters On TUMAN-3 the both enhancement and degradation of the confinement were observed in the minor radius magnetic compression experiments In this paper the results

I. Review Objective 7.0 CONFINEMENT EVALUATION

by unknown authors
"... In this portion of the dry cask storage system (DCSS) review, the NRC evaluates the confinement features and capabilities of the proposed cask system. In conducting this evaluation, the NRC staff seeks to ensure that radiological releases to the environment will be within the limits established by t ..."
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In this portion of the dry cask storage system (DCSS) review, the NRC evaluates the confinement features and capabilities of the proposed cask system. In conducting this evaluation, the NRC staff seeks to ensure that radiological releases to the environment will be within the limits established

Thermal Transport Effect on Stability of Drift-Tearing Mode

by S. Nishimura, S. -i. Itoh, M. Yagi, M. Azumi, K. Itoh
"... The magnetic island is often observed in high beta tokamak plasmas, which has the charac-teristics of probabilistic excitation with respect to plasma parameters and sudden growth[1]. For the achievement of high performance in fusion plasma, the control of magnetic island is one of the key issues sin ..."
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since once it appears, the confinement degradation occurs. Up to now, the trigger

The Role of Magnetic Shear in the Confinement of W7-AS Plasmas

by Brakel Rudolf, Anton Mathias, Erckmann Volker, Redler Stefan, Geiger Joachim, Hartzub Hans-j, Hirsch Mathias, Jaenicke Rolf, Kuhner Georg, Maassberg Henning, Stroth Ulrich, Wagner Friedrich , 1997
"... Magnetic shear has systematically been varied by inductive current drive in moderate B, ECR heated W7-AS discharges. Confinement is found to depend strongly on magnetic shear in the presence of high order rational values of the rotational transform. For optimum confinement, high order resonances hav ..."
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have to be avoided in the boundary region, or shear must be sufficiently large. The observed improvement of degraded confinement with increasing shear is associated with a reduction of transport to the neoclassical level. Keywords: W7-AS, stellarator, magnetic shear, confinement, transport

THE CONFINEMENT AND STABILITY OF QUASI-STATIONARY HIGH β PLASMAS ON COMPASS-D

by C D Warrick, M Valovic, B Lloyd, R J Buttery, A W Morris, M R O’brien, T Pinfold, H R Wilson, M J Walsh, K Stammers, The Compass/rf Teams
"... On COMPASS-D, the β limit can be degraded by the onset of (m=2,n=1) neo-classical tearing modes [1]. Active avoidance of these modes has been demonstrated by optimisation of the current ramp-up phase and careful adjustment of the ECRH timing, thus maintaining high β performance (βN~2, βp>1) with& ..."
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On COMPASS-D, the β limit can be degraded by the onset of (m=2,n=1) neo-classical tearing modes [1]. Active avoidance of these modes has been demonstrated by optimisation of the current ramp-up phase and careful adjustment of the ECRH timing, thus maintaining high β performance (βN~2, βp>1) with
Results 1 - 10 of 333