New diagnostic tools for transport measurements in the scrape-off layer (SOL) of medium-size tokamaks

B. S. Schneider, C. Ionita*, S. Costea, O. Vasilovici, J. Kovačič, T. Gyergyek, B. Končar, M. Draksler, R. D. Nem, V. Naulin, J. J. Rasmussen, M. Spolaore, N. Vianello, R. Stärz, A. Herrmann, R. Schrittwieser

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

100 Downloads (Pure)

Abstract

We present a new diagnostic tool for the determination of various plasma parameters in the edge region of medium-size tokamaks (MST) and stellarators (specifically Wendelstein 7-X) which is under development under the EUROfusion project task force MST2 and S1. This will be a probe head (called the new probe head-NPH) which will carry two cold Langmuir probes, one electron-emissive probe (EEP), two retarding field analysers (RFA) facing upstream and downstream and two magnetic pickup coils. By various adaptors, the same NPH will be used on all three European MSTs (ASDEX Upgrade, TCV and MAST-U) and on Wendelstein 7-X. For the first time the plasma potential in the edge region of MSTs and comparable toroidal fusion experiments will be directly determined by an EEP that will be permanently heated during the measurements. After the introduction and the theoretical background especially of the EEP, the NPH and its components are described in detail. The NPH will be able to measure electron and ion temperature, electron and ion density, cold floating potential, plasma potential and magnetic fluctuations in all three directions of space at two radial positions.
Original languageEnglish
Article number054004
JournalPlasma Physics and Controlled Fusion
Volume61
Issue number5
Number of pages12
ISSN0741-3335
DOIs
Publication statusPublished - 2019

Keywords

  • Plasma diagnostics
  • Plasma probes
  • Probe head
  • Turbulence edge transport

Cite this

Schneider, B. S., Ionita, C., Costea, S., Vasilovici, O., Kovačič, J., Gyergyek, T., ... Schrittwieser, R. (2019). New diagnostic tools for transport measurements in the scrape-off layer (SOL) of medium-size tokamaks. Plasma Physics and Controlled Fusion, 61(5), [054004]. https://doi.org/10.1088/1361-6587/ab0596
Schneider, B. S. ; Ionita, C. ; Costea, S. ; Vasilovici, O. ; Kovačič, J. ; Gyergyek, T. ; Končar, B. ; Draksler, M. ; Nem, R. D. ; Naulin, V. ; Rasmussen, J. J. ; Spolaore, M. ; Vianello, N. ; Stärz, R. ; Herrmann, A. ; Schrittwieser, R. / New diagnostic tools for transport measurements in the scrape-off layer (SOL) of medium-size tokamaks. In: Plasma Physics and Controlled Fusion. 2019 ; Vol. 61, No. 5.
@article{8929aed051ee4806ba2536971c4d0ff6,
title = "New diagnostic tools for transport measurements in the scrape-off layer (SOL) of medium-size tokamaks",
abstract = "We present a new diagnostic tool for the determination of various plasma parameters in the edge region of medium-size tokamaks (MST) and stellarators (specifically Wendelstein 7-X) which is under development under the EUROfusion project task force MST2 and S1. This will be a probe head (called the new probe head-NPH) which will carry two cold Langmuir probes, one electron-emissive probe (EEP), two retarding field analysers (RFA) facing upstream and downstream and two magnetic pickup coils. By various adaptors, the same NPH will be used on all three European MSTs (ASDEX Upgrade, TCV and MAST-U) and on Wendelstein 7-X. For the first time the plasma potential in the edge region of MSTs and comparable toroidal fusion experiments will be directly determined by an EEP that will be permanently heated during the measurements. After the introduction and the theoretical background especially of the EEP, the NPH and its components are described in detail. The NPH will be able to measure electron and ion temperature, electron and ion density, cold floating potential, plasma potential and magnetic fluctuations in all three directions of space at two radial positions.",
keywords = "Plasma diagnostics, Plasma probes, Probe head, Turbulence edge transport",
author = "Schneider, {B. S.} and C. Ionita and S. Costea and O. Vasilovici and J. Kovačič and T. Gyergyek and B. Končar and M. Draksler and Nem, {R. D.} and V. Naulin and Rasmussen, {J. J.} and M. Spolaore and N. Vianello and R. Stärz and A. Herrmann and R. Schrittwieser",
year = "2019",
doi = "10.1088/1361-6587/ab0596",
language = "English",
volume = "61",
journal = "Plasma Physics and Controlled Fusion",
issn = "0741-3335",
publisher = "IOP Publishing",
number = "5",

}

Schneider, BS, Ionita, C, Costea, S, Vasilovici, O, Kovačič, J, Gyergyek, T, Končar, B, Draksler, M, Nem, RD, Naulin, V, Rasmussen, JJ, Spolaore, M, Vianello, N, Stärz, R, Herrmann, A & Schrittwieser, R 2019, 'New diagnostic tools for transport measurements in the scrape-off layer (SOL) of medium-size tokamaks', Plasma Physics and Controlled Fusion, vol. 61, no. 5, 054004. https://doi.org/10.1088/1361-6587/ab0596

New diagnostic tools for transport measurements in the scrape-off layer (SOL) of medium-size tokamaks. / Schneider, B. S.; Ionita, C.; Costea, S.; Vasilovici, O.; Kovačič, J.; Gyergyek, T.; Končar, B.; Draksler, M.; Nem, R. D.; Naulin, V.; Rasmussen, J. J.; Spolaore, M.; Vianello, N.; Stärz, R.; Herrmann, A.; Schrittwieser, R.

In: Plasma Physics and Controlled Fusion, Vol. 61, No. 5, 054004, 2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - New diagnostic tools for transport measurements in the scrape-off layer (SOL) of medium-size tokamaks

AU - Schneider, B. S.

AU - Ionita, C.

AU - Costea, S.

AU - Vasilovici, O.

AU - Kovačič, J.

AU - Gyergyek, T.

AU - Končar, B.

AU - Draksler, M.

AU - Nem, R. D.

AU - Naulin, V.

AU - Rasmussen, J. J.

AU - Spolaore, M.

AU - Vianello, N.

AU - Stärz, R.

AU - Herrmann, A.

AU - Schrittwieser, R.

PY - 2019

Y1 - 2019

N2 - We present a new diagnostic tool for the determination of various plasma parameters in the edge region of medium-size tokamaks (MST) and stellarators (specifically Wendelstein 7-X) which is under development under the EUROfusion project task force MST2 and S1. This will be a probe head (called the new probe head-NPH) which will carry two cold Langmuir probes, one electron-emissive probe (EEP), two retarding field analysers (RFA) facing upstream and downstream and two magnetic pickup coils. By various adaptors, the same NPH will be used on all three European MSTs (ASDEX Upgrade, TCV and MAST-U) and on Wendelstein 7-X. For the first time the plasma potential in the edge region of MSTs and comparable toroidal fusion experiments will be directly determined by an EEP that will be permanently heated during the measurements. After the introduction and the theoretical background especially of the EEP, the NPH and its components are described in detail. The NPH will be able to measure electron and ion temperature, electron and ion density, cold floating potential, plasma potential and magnetic fluctuations in all three directions of space at two radial positions.

AB - We present a new diagnostic tool for the determination of various plasma parameters in the edge region of medium-size tokamaks (MST) and stellarators (specifically Wendelstein 7-X) which is under development under the EUROfusion project task force MST2 and S1. This will be a probe head (called the new probe head-NPH) which will carry two cold Langmuir probes, one electron-emissive probe (EEP), two retarding field analysers (RFA) facing upstream and downstream and two magnetic pickup coils. By various adaptors, the same NPH will be used on all three European MSTs (ASDEX Upgrade, TCV and MAST-U) and on Wendelstein 7-X. For the first time the plasma potential in the edge region of MSTs and comparable toroidal fusion experiments will be directly determined by an EEP that will be permanently heated during the measurements. After the introduction and the theoretical background especially of the EEP, the NPH and its components are described in detail. The NPH will be able to measure electron and ion temperature, electron and ion density, cold floating potential, plasma potential and magnetic fluctuations in all three directions of space at two radial positions.

KW - Plasma diagnostics

KW - Plasma probes

KW - Probe head

KW - Turbulence edge transport

U2 - 10.1088/1361-6587/ab0596

DO - 10.1088/1361-6587/ab0596

M3 - Journal article

VL - 61

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 5

M1 - 054004

ER -