Psep/PLH control in deuterium and deuterium–tritium JET plasmas

Piron L.; Līga Avotiņa; Larisa Baumane; Mihails Haļitovs; Patrīcija Kalniņa; Gunta Ķizāne; Andris Leščinskis; Elīna Pajuste; Anete Stīne Teimane; Aigars Vītiņš; Rūdolfs Jānis Zabolockis; Artūrs Zariņš; JET Contributors

doi:10.1088/1361-6587/adc8d0

Psep/PLH control in deuterium and deuterium–tritium JET plasmas

Piron L.
, Līga Avotiņa
, Larisa Baumane
, Mihails Haļitovs
, Patrīcija Kalniņa
, Gunta Ķizāne
, Andris Leščinskis
, Elīna Pajuste
, Anete Stīne Teimane
, Aigars Vītiņš
, Rūdolfs Jānis Zabolockis
, Artūrs Zariņš
, JET Contributors

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

The high confinement mode (H-mode) is a promising route to achieve high performance tokamak operations, as the ones foreseen in ITER and beyond. However, accessing a stable H-mode phase requires that the power across the plasma separatrix, P_sep, exceeds a certain power threshold, P_LH. Feedback control can be utilized in this context to guide the H-mode entry and exit, and to tailor its evolution throughout the pulse by monitoring f^Net_LH defined as the ratio of P_sep over P_LH. Such a controller has been integrated into the JET plasma control system, using the neutral beam power and the gas puffing as actuators. In this work, we document successful P_sep/P_LH control studies carried out in deuterium and deuterium-tritium plasmas, which pave the way for using this portable controller in ITER and next step fusion devices.

Original language	English
Article number	055006
Journal	Plasma Physics and Controlled Fusion
Volume	67
Issue number	5
DOIs	https://doi.org/10.1088/1361-6587/adc8d0
Publication status	Published - 31 May 2025

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

ELM dynamics
H mode
JET
plasma control

OECD Field of Science

1.3 Physical Sciences

Access to Document

10.1088/1361-6587/adc8d0

Cite this

L., P., Avotiņa, L., Baumane, L., Haļitovs, M., Kalniņa, P., Ķizāne, G., Leščinskis, A., Pajuste, E., Teimane, A. S., Vītiņš, A., Zabolockis, R. J., Zariņš, A., & Contributors, JET. (2025). Psep/PLH control in deuterium and deuterium–tritium JET plasmas. Plasma Physics and Controlled Fusion, 67(5), Article 055006. https://doi.org/10.1088/1361-6587/adc8d0

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title = "Psep/PLH control in deuterium and deuterium–tritium JET plasmas",

abstract = "The high confinement mode (H-mode) is a promising route to achieve high performance tokamak operations, as the ones foreseen in ITER and beyond. However, accessing a stable H-mode phase requires that the power across the plasma separatrix, Psep, exceeds a certain power threshold, PLH. Feedback control can be utilized in this context to guide the H-mode entry and exit, and to tailor its evolution throughout the pulse by monitoring fNetLH defined as the ratio of Psep over PLH. Such a controller has been integrated into the JET plasma control system, using the neutral beam power and the gas puffing as actuators. In this work, we document successful Psep/PLH control studies carried out in deuterium and deuterium-tritium plasmas, which pave the way for using this portable controller in ITER and next step fusion devices.",

keywords = "ELM dynamics, H mode, JET, plasma control",

author = "Piron L. and Līga Avotiņa and Larisa Baumane and Mihails Haļitovs and Patrīcija Kalniņa and Gunta Ķizāne and Andris Le{\v s}{\v c}inskis and Elīna Pajuste and Teimane, \{Anete Stīne\} and Aigars Vītiņ{\v s} and Zabolockis, \{Rūdolfs Jānis\} and Artūrs Zariņ{\v s} and JET Contributors",

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doi = "10.1088/1361-6587/adc8d0",

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AU - L., Piron

AU - Avotiņa, Līga

AU - Baumane, Larisa

AU - Haļitovs, Mihails

AU - Kalniņa, Patrīcija

AU - Ķizāne, Gunta

AU - Leščinskis, Andris

AU - Pajuste, Elīna

AU - Teimane, Anete Stīne

AU - Vītiņš, Aigars

AU - Zabolockis, Rūdolfs Jānis

AU - Zariņš, Artūrs

AU - Contributors, JET

PY - 2025/5/31

Y1 - 2025/5/31

N2 - The high confinement mode (H-mode) is a promising route to achieve high performance tokamak operations, as the ones foreseen in ITER and beyond. However, accessing a stable H-mode phase requires that the power across the plasma separatrix, Psep, exceeds a certain power threshold, PLH. Feedback control can be utilized in this context to guide the H-mode entry and exit, and to tailor its evolution throughout the pulse by monitoring fNetLH defined as the ratio of Psep over PLH. Such a controller has been integrated into the JET plasma control system, using the neutral beam power and the gas puffing as actuators. In this work, we document successful Psep/PLH control studies carried out in deuterium and deuterium-tritium plasmas, which pave the way for using this portable controller in ITER and next step fusion devices.

AB - The high confinement mode (H-mode) is a promising route to achieve high performance tokamak operations, as the ones foreseen in ITER and beyond. However, accessing a stable H-mode phase requires that the power across the plasma separatrix, Psep, exceeds a certain power threshold, PLH. Feedback control can be utilized in this context to guide the H-mode entry and exit, and to tailor its evolution throughout the pulse by monitoring fNetLH defined as the ratio of Psep over PLH. Such a controller has been integrated into the JET plasma control system, using the neutral beam power and the gas puffing as actuators. In this work, we document successful Psep/PLH control studies carried out in deuterium and deuterium-tritium plasmas, which pave the way for using this portable controller in ITER and next step fusion devices.

KW - ELM dynamics

KW - H mode

KW - JET

KW - plasma control

UR - https://www.scopus.com/pages/publications/105002696987

U2 - 10.1088/1361-6587/adc8d0

DO - 10.1088/1361-6587/adc8d0

M3 - Article

SN - 0741-3335

VL - 67

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 5

M1 - 055006

ER -

Psep/PLH control in deuterium and deuterium–tritium JET plasmas

Abstract

UN SDGs

Keywords

OECD Field of Science

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