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Modelling of Neutron Markers for the COMPASS Upgrade Tokamak and Generation of Synthetic Neutron Spectra
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SYSNO ASEP 0565692 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Modelling of Neutron Markers for the COMPASS Upgrade Tokamak and Generation of Synthetic Neutron Spectra Author(s) Jaulmes, Fabien (UFP-V) ORCID
Ficker, Ondřej (UFP-V) ORCID
Weinzettl, Vladimír (UFP-V) RID, ORCID
Komm, Michael (UFP-V) RID, ORCID
Grover, Ondřej (UFP-V) ORCID
Seidl, Jakub (UFP-V) RID
Zadvitskiy, Georgiy (UFP-V)
Tomešová, Eva (UFP-V) ORCID
Pánek, Radomír (UFP-V) RIDNumber of authors 9 Article number 16 Source Title Journal of Fusion Energy. - : Springer - ISSN 0164-0313
Roč. 41, č. 2 (2022)Number of pages 11 s. Language eng - English Country DE - Germany Keywords COMPASS upgrade ; nbi ; Neutron detector ; Neutrons Subject RIV BL - Plasma and Gas Discharge Physics OECD category Fluids and plasma physics (including surface physics) R&D Projects EF16_019/0000768 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UFP-V - RVO:61389021 UT WOS 000833963400001 EID SCOPUS 85135373864 DOI 10.1007/s10894-022-00328-6 Annotation In the future COMPASS Upgrade (Vondracek et al. in Fusion Eng Des 169:112490, https://doi.org/10.1016/j.fusengdes.2021.112490, 2021) tokamak (R0=0.894m, Bt∼5T), three distinct types of edge transport barrier are anticipated: ELMy H-mode, EDA H-mode and I-mode. The main auxiliary heating system used to access H-mode will be Neutral Beam Injection (NBI) power. The NBI will have a nominal injection energy of 80keV at a maximum injection radius Rtan=0.6m. A significant neutron yield will occur from the interaction of the beam with the plasma background. Using our orbit-following code EBdyna (Jaulmes et al. in Nucl Fusion 61, 046012, https://doi.org/10.1088/1741-4326/abd41b, 2021), we calculate the trajectories of the NBI ions during the complete thermalization process, calculate the amount of NBI ions losses and evaluate the neutron rate in steady state from the beam–plasma and beam–beam interaction. Combining it with the thermal yield, we can derive detailed synthetic spectrogram of the energy distribution of the neutrons. The markers can be further used to provide synthetic neutron spectrometer diagnostics data. Due to the reduction of the simulated neutron count seen by the detectors when the peaking of the neutron source is lower, we anticipate the need for absolute-calibration in order to recover quantitative results. Workplace Institute of Plasma Physics Contact Vladimíra Kebza, kebza@ipp.cas.cz, Tel.: 266 052 975 Year of Publishing 2023 Electronic address https://link.springer.com/article/10.1007/s10894-022-00328-6
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