Results 261 to 270 of about 69,287 (288)

Prediction of DIII-D Pedestal Structure From Externally Controllable Parameters

IEEE Transactions on Plasma Science, 2021
The sharp increase of pressure at the edge of a high confinement mode (H-mode) plasma, the pedestal, strongly impacts overall plasma performance. Predicting the pedestal is a necessity to control and optimize tokamak operations. An experimental data-driven machine learning (ML) approach is presented, which predicts the pedestal heights and widths of ...
Emi U. Zeger, Florian M. Laggner, Alessandro Bortolon, Cristina Rea, Orso Meneghini, Samuli Saarelma, Brian S. Sammuli, Sterling P. Smith, Jinjin Zhao   +8 more
openaire   +1 more source

Pedestal Structure without and with 3D Fields

Contributions to Plasma Physics, 2014
AbstractAchieving high pedestal pressures in H(high)‐mode plasmas confined in tokamaks is critical for obtaining fusion burning plasmas in ITER. Recent characterizations of quasi‐equilibrium plasma parameter profiles in low collisionality H‐mode pedestals in the DIII‐D tokamak are briefly summarized.
openaire   +1 more source

Resonant magnetic perturbation effects on pedestal structure and ELMs

Nuclear Fusion, 2012
Abstract The plasma transport processes by which externally applied resonant magnetic field perturbations (RMPs) mitigate or suppress edge-localized modes (ELMs) in low-collisionality tokamak H-mode plasmas are explored. Experimental data from DIII-D indicates the dominant RMP-induced transport occurs at the pedestal top where electron ...
J.D. Callen, A.J. Cole, C.C. Hegna, S. Mordijck, R.A. Moyer   +4 more
openaire   +1 more source

STRUCTURAL STUDY OF AN/FPS-24 PEDESTAL

1965
Abstract : Results are presented from an investigation of the load distribution to the main azimuth bearing of the AN/FPS-24 radar. The bearing is a 10-ft diameter 4-point contact bearing subjected to thrust, radial, and overturning loads. Actual static ball loads were determined in a field test.
E. Lange, J. M. McGrew, H. D. Barnhart
openaire   +1 more source

Mid-Infrared Microphotonics Using Air-clad Silicon Pedestal Structures

CLEO: 2013, 2013
Towards Mid-Infrared silicon microphotonic circuits, we demonstrate broadband on-chip silicon structures including straight, bent waveguides, and beam splitters, utilizing a novel air-clad pedestal configuration. Transmission loss of 2.7 dB/cm is obtained at λ=3.7 um.
Pao Tai Lin, Vivek Singh, Yan Cai, Lionel C. Kimerling, Anu Agarwal   +4 more
openaire   +1 more source

The Research of EAST Pedestal Structure and Preliminary Application

Plasma Science and Technology, 2016
The pedestal characteristic is an important basis for high confinement mode (H-mode) research. Because of the finite spatial resolution of Thomson scattering (TS) diagnostic on Experimental Advanced Superconducting Tokamak (EAST), it is necessary to characterize the pedestal with a suitable functional form.
Tengfei Wang, Qing Zang, Xiaofeng Han, Shumei Xiao, Ailan Hu, Junyu Zhao   +5 more
openaire   +1 more source

Predictive modeling of pedestal structure in KSTAR using EPED model

Physics of Plasmas, 2013
A predictive calculation is given for the structure of edge pedestal in the H-mode plasma of the KSTAR (Korea Superconducting Tokamak Advanced Research) device using the EPED model. Particularly, the dependence of pedestal width and height on various plasma parameters is studied in detail. The two codes, ELITE and HELENA, are utilized for the stability
Hyunsun Han, Ohjin Kwon, J. Y. Kim
openaire   +1 more source

Pedestal structure and stability at peeling boundary in TCV

2022
ITER will operate at low pedestal collisionality (?*eeped) and high separatrix density (n esep).
Frassinetti L., Labit B., Dunne M., Saarlema S., Vianello N., TCV Team   +5 more
openaire   +1 more source

Incorporation of a tungsten pedestal structure into the nanotriode device

IEEE/CPMT/SEMI. 28th International Electronics Manufacturing Technology Symposium (Cat. No.03CH37479), 2004
In this paper, the nanotriode fabrication process has been modified to incorporate a pedestal for the nanopillars, which increases the dielectric surface leakage gap, whilst maintaining the extractor-nanopillar gap.
A.M. Blackburn, D.G. Hasko, D.A. Williams, H. Ahmed   +3 more
openaire   +1 more source

Experimental Structural Analysis of Pedestal Mounted Stinger System Turret

Applied Mechanics and Materials, 2007
An experimental approach for the solution of the turret stress state and dynamic behavior has been presented using strain gages and accelerometers on Pedestal Mounted Stinger System. The critical stress locations were determined by finite element analysis outputs where rosettes are bonded in order to perform the life profile simulation tests.
openaire   +1 more source