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| 001 | 891425 | ||
| 005 | 20240708133242.0 | ||
| 024 | 7 | _ | |a 10.1063/1.5054279 |2 doi |
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| 100 | 1 | _ | |a Cai, J. |0 P:(DE-Juel1)171371 |b 0 |
| 245 | _ | _ | |a A new multi-channel Mach probe measuring the radial ion flow velocity profile in the boundary plasma of the W7-X stellarator |
| 260 | _ | _ | |a [S.l.] |c 2019 |b American Institute of Physics |
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| 520 | _ | _ | |a Ion flow velocity measurement in the edge and scraper-off layer region is beneficial to understand the confinement related phenomenon in fusion devices such as impurity transport and plays an important role in impurity control. During the Wendelstein 7-X (W7-X) operation phase 1.2a, a multi-channel (MC) Mach probe mounted on the multi-purpose manipulator has been used to measure radial profiles of edge ion flow velocity. This MC-Mach probe consists of two polar and two radial arrays of directional Langmuir pins (28 pins in total) serving for different aims, of which the polar arrays could obtain a polar distribution of ion saturation current, while the radial arrays can be used to study the dynamic process of a radially propagated event. In this paper, we report the observation of the radially outward propagation of a low frequency mode with a speed of around 200 m/s. The first measurement of the radial ion flow velocity profile using the MC-Mach probe in the boundary plasma of the W7-X with an island divertor will also be presente |
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| 700 | 1 | _ | |a Liang, Yunfeng |0 P:(DE-Juel1)130088 |b 1 |e Corresponding author |
| 700 | 1 | _ | |a Killer, C. |0 0000-0001-7747-3066 |b 2 |
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| 773 | _ | _ | |a 10.1063/1.5054279 |g Vol. 90, no. 3, p. 033502 - |0 PERI:(DE-600)1472905-2 |n 3 |p 033502 - |t Review of scientific instruments |v 90 |y 2019 |x 1089-7623 |
| 856 | 4 | _ | |u https://juser.fz-juelich.de/record/891425/files/1.5054279.pdf |y Published on 2019-03-07. Available in OpenAccess from 2020-03-07. |
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