Nuclear Fusion (Jan 2024)
Detection of alpha heating in JET-ILW DT plasmas by a study of the electron temperature response to ICRH modulation
- P. Mantica,
- F. Auriemma,
- I. Casiraghi,
- D. Gallart,
- K. Kirov,
- E. Lerche,
- A. Salmi,
- A. Dal Molin,
- E. Delabie,
- J. Eriksson,
- J. Garcia,
- P. Huynh,
- P. Jacquet,
- T. Jonsson,
- V. Kiptily,
- E. Litherland–Smith,
- C.F. Maggi,
- M. Mantsinen,
- G. Marcer,
- M. Maslov,
- S. Menmuir,
- M. Nocente,
- E. Peluso,
- G. Pucella,
- D. Rigamonti,
- Z. Stancar,
- H. Sun,
- G. Szepesi,
- M. Tardocchi,
- D. Van Eester,
- JET Contributors
Affiliations
- P. Mantica
- ORCiD
- Institute of Plasma Science and Technology, CNR , Milano, Italy
- F. Auriemma
- ORCiD
- Consorzio RFX ISTP-CNR , Padova, Italy
- I. Casiraghi
- Institute of Plasma Science and Technology, CNR , Milano, Italy
- D. Gallart
- ORCiD
- Barcelona Supercomputing Center , Barcelona, Spain
- K. Kirov
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- E. Lerche
- Laboratory for Plasma Physics, ERM/KMS , Brussels, Belgium
- A. Salmi
- ORCiD
- VTT , PO Box 1000, FI-02044 VTT Espoo, Finland
- A. Dal Molin
- ORCiD
- Institute of Plasma Science and Technology, CNR , Milano, Italy
- E. Delabie
- Oak Ridge National Laboratory , Oak Ridge, TN 37831, United States of America
- J. Eriksson
- ORCiD
- Department of Physics and Astronomy, Uppsala University , Uppsala, Sweden
- J. Garcia
- ORCiD
- CEA, IRFM , Saint-Paul-lez-Durance, France
- P. Huynh
- CEA, IRFM , Saint-Paul-lez-Durance, France
- P. Jacquet
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- T. Jonsson
- ORCiD
- Fusion Plasma Physics, EES, KTH , Stockholm, Sweden
- V. Kiptily
- ORCiD
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- E. Litherland–Smith
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- C.F. Maggi
- ORCiD
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- M. Mantsinen
- Barcelona Supercomputing Center , Barcelona, Spain; ICREA , Barcelona, Spain
- G. Marcer
- University of Milano-Bicocca , Milano, Italy
- M. Maslov
- ORCiD
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- S. Menmuir
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- M. Nocente
- ORCiD
- University of Milano-Bicocca , Milano, Italy
- E. Peluso
- ORCiD
- University of Rome Tor Vergata , Roma, Italy; ENEA C.R.Frascati , Frascati, Italy
- G. Pucella
- ORCiD
- ENEA C.R.Frascati , Frascati, Italy
- D. Rigamonti
- ORCiD
- Institute of Plasma Science and Technology, CNR , Milano, Italy
- Z. Stancar
- ORCiD
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- H. Sun
- ORCiD
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- G. Szepesi
- UKAEA, Culham Science Centre , Abingdon, United Kingdom of Great Britain and Northern Ireland
- M. Tardocchi
- Institute of Plasma Science and Technology, CNR , Milano, Italy
- D. Van Eester
- ORCiD
- Laboratory for Plasma Physics, ERM/KMS , Brussels, Belgium
- JET Contributors
- DOI
- https://doi.org/10.1088/1741-4326/ad52aa
- Journal volume & issue
-
Vol. 64,
no. 8
p. 086001
Abstract
In the JET DTE2 campaign a new method was successfully tested to detect the heating of bulk electrons by α-particles, using the dynamic response of the electron temperature T _e to the modulation of ion cyclotron resonance heating (ICRH). A fundamental deuterium (D) ICRH scheme was applied to a tritium-rich hybrid plasma with D-neutral beam injection (NBI). The modulation of the ion temperature T _i and of the ICRH accelerated deuterons leads to modulated α -heating with a large delay with respect to other modulated electron heating terms. A significant phase delay of ∼40° is measured between central T _e and T _i , which can only be explained by α -particle heating. Integrated modelling using different models for ICRH absorption and ICRH/NBI interaction reproduces the effect qualitatively. Best agreement with experiment is obtained with the European Transport Solver/Heating and Current Drive workflow.
Keywords
