Wendelstein 7-X stellarator
Wendelstein 7-X – a Technology Step towards Demo
... The Wendelstein 7-X stellarator, presently under construction in Greifswald, will be the first “fully- optimized” stellarator device which combines a quasi-symmetric magnetic field ...
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From Wendelstein 7-X to a Stellarator Reactor
... Probably owing to the different weighting of neoclassi- cal and anomalous transport in the different stellarator de- vices, a unified scaling law does not exist. Recent stud- ies have shown that the cross-device ...
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Status and High Power Performance of the 10-MW 140-GHz ECH System for the Stellarator Wendelstein 7-X
... transmission system. At pulses longer than ≈0.1 s the gy- rotron is usually operated with depressed collector. The efficiency of the gyrotron was around 42% for beam cur- rents from 28 A up to 40 A with a maximum of 43% ...
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Electron Bernstein Waves at the WEGA Stellarator Heating and Emission
... to X- and O-mode waves was ...for Wendelstein 7-X and which are covering nearly the whole confinement region of ...soft X-ray de- tector was installed, which is sensitive in a range of ...
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Remote-Steering Antennas for 140 GHz Electron Cyclotron Heating of the Stellarator W7-X
... The ECRH system at the stellarator Wendelstein 7-X (W7-X) has 10 MW of continuous power at 140 GHz [1]. The beams from the 10 gyrotrons are transmitted via 2 quasi-optical multi-beam ...
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Configuration Property of the Chinese First Quasi-Axisymmetric Stellarator
... optimized stellarator configurations have been proposed and constructed as real experimental devices dur- ing the last several ...and Wendelstein 7-X (W7X) [3], which have optimal magnetic ...
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ECE Diagnostic for the initial Operation of Wendelstein 7-X
... about 55 cm where the sightline crosses the confinement region. The temperature variation within a probed volume defined by Gauss beam and bandwidth of a given radiometer channel is minimized by a sightline widely ...
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Integrated Software Development for Wendelstein 7-X
... diagnostics [12]. In this case, the probability distribution of the Thomson scattering results under inclusion of soft X-ray temperature and microwave cut-off density information has become much more narrow. The ...
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Damping of Alfvén eigenmodes in complicated tokamak and stellarator geometries
... and Wendelstein 7-X (W7-X) have complicated three-dimensional magnetic geome- tries which induce many different couplings between different harmonics which will influence the structure and ...
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Advanced electron cyclotron heating and current drive experiments on the stellarator Wendelstein 7-X
... Fig. 7 shows the value of the neutral pressure peak after a helium discharge normalized to the absorbed energy over the cumulated discharge time in which almost full absorption was ...
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Application of Information Systems to Decrease Traffic Construction using CCTV Network Technology
... On line 3 = 45 seconds + 6 x 5 seconds = 75 seconds On line 4 = 45 seconds + 3 x 5 seconds = 60 seconds 2. Waiting Time for Total Congestion System When this system works, all red lights will turn on. This ...
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General and specific combining abilities of local common bean varieties and cultivars
... BGU-1 x BGU-36 and BGU-13 x BGU-36, which recorded SCA values: ...Uirapuru x BGU-36 and BGU-1 xBGU-36in BLOOM presented the greatest negative magnitudes: ...
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Engineering Design of the Chinese First Quasi-Axisymmetric Stellarator (CFQS)
... quasi-axisymmetric stellarator, based on a CHS-qa configuration, which aims to improve neoclassical transport and explore high-β con- figurations by combining the best features of advanced tokamaks and optimized ...
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Configuring the LISTSERV Web Interface for IIS 7.X
... Special Note for users of IIS SMTPSVC: IIS 7 Manager does not implement any means to configure the SMTPSVC. Instead, you need to install the IIS 6 Management Console from the Windows 2008 Installation Media; and ...
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Rapid design and manufacture tools in architecture
... The original term Rapid Prototyping was coined in the late eighties with the commercialisation of the first technology, Stereolithography marketed by 3D Systems. At that time Layered Manufacture technologies could only ...
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Configuration Optimization of a Planar-Axis Stellarator with a Reduced Shafranov Shift
... With the vertical magnetic field control for the mag- netic axis shift, major radii and minor radii are different for three LHD configurations. We first studied the effects of aspect ratios on the confinement properties by ...
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Study of Magnetic Island Using a 3D MHD Equilibrium Calculation Code
... The net toroidal current is observed. Here, we dis- cussed only the equilibrium response due to the distortion of the P-S current flow. If the magnetic island appears or changes, the distortion of the net toroidal ...
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Microwave Reflection from the Region of Electron Cyclotron Resonance Heating in the L-2M Stellarator
... the X- and B-modes turn out to be ...the X-wave energy can transform in the resonance re- gion into the energy of the B-mode propagating toward the lower magnetic ...
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Experimental Confinement Studies Beyond ITER
... a stellarator plasma core where temperature is above a critical value, the radial electric field makes a transition into a strongly positive branch (or electron root) with the radial electric field outside still ...
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Dirichlet boundary conditions for arbitrary-shaped boundaries in stellarator-like magnetic fields for the Flux-Coordinate Independent method
... Following the magnetic field lines, or field line tracing, generates a field line map that maps a given grid point to its intersection point on the next/previous perpendicular plane. Two field line maps are needed, one ...
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