Modelling of the soft X-ray tungsten spectra expected to be registered by GEM detection system for WEST

• Autorzy: Syrocki Ł. , Szymańska E. , Słabkowska K. , Polasik M. , Pestka G.

Identyfikatory

DOI

10.1515/nuka-2016-0071

• Konferencja: Summer School of Plasma Diagnostics PhDiaFusion 2015: “Soft X-ray Diagnostics for Fusion Plasma” (16-20.06.2015 ; Bezmiechowa, Poland)
• Języki publikacji: EN

Abstrakty

EN

In the future International Thermonuclear Experimental Reactor (ITER), the interaction between the plasma and the tungsten chosen as the plasma-facing wall material imposes that the hot central plasma loses energy by X-ray emission from tungsten ions. On the other hand, the registered X-ray spectra provide alternative diagnostics of the plasma itself. Highly ionized tungsten emits extremely complex X-ray spectra that can be understood only after exhaustive theoretical studies. The detailed analyses will be useful for proper interpretation of soft X-ray plasma radiation expected to be registered on ITER-like machines, that is, Tungsten (W) Environment in Steady-state Tokamak (WEST). The simulations of the soft X-ray spectra structures for tungsten ions have been performed using the flexible atomic code (FAC) package within the framework of collisional-radiative (CR) model approach for electron temperatures and densities relevant to WEST tokamak.

Słowa kluczowe

EN

X-ray spectra; tokamak; tungsten L, M, N, X-ray lines; GEM detection system

• Wydawca: Institute of Nuclear Chemistry and Technology
• Czasopismo: Nukleonika
• Rocznik: 2016
• Tom: Vol. 61, No. 4
• Strony: 433--436
• Opis fizyczny: Bibliogr. 14 poz., rys.

Twórcy

autor

Syrocki Ł.

• Institute of Plasma Physics and Laser Microfusion, 23 Hery Str., 01-497 Warsaw, Poland
• Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland

autor

Szymańska E.

• Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland

autor

Słabkowska K.

• Institute of Plasma Physics and Laser Microfusion, 01-497 Warsaw, Poland and Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland

autor

Polasik M.

• Institute of Plasma Physics and Laser Microfusion, 01-497 Warsaw, Poland and Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland

autor

Pestka G.

• Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland

Bibliografia

• 1. Pütterich, T., Neu, R., Dux, R., Whiteford, A. D., O’Mullane, M. G., & ASDEX Upgrade Team. (2008). Modelling of measured tungsten spectra from ASDEX Upgrade and predictions for ITER. Plasma Phys. Control. Fusion, 50, 085016. DOI: 10.1088/0741-3335/50/8/085016.
• 2. Neu, R., Fournier, K. B., Bolshukhin, D., & Dux, R. (2001). Spectral lines from highly charged tungsten ions in the soft-X-ray region for quantitative diagnostics of fusion plasmas. Phys. Scr., T92, 307. DOI: 10.1238/Physica.Topical.092a00307.
• 3. O’Mullane, M. G., Summers, H. P., Whiteford, A. D., Meigs, A. G., Lawson, K. D., Zastrow, K. -D., Barnsley, R., Coffey, I. H., & JET-EFDA Contributors. (2006). Atomic modeling and instrumentation for measurement and analysis of emission in preparation for the ITER-like wall in JET. Rev. Sci. Instrum., 77, 10F520. http://dx.doi.org/10.1063/1.2236278.
• 4. Ralchenko, Y., Tan, J. N., Gillaspy, J. D., & Pomeroy, J. M. (2006). Accurate modeling of benchmark x-ray spectra from highly charged ions of tungsten. Phys. Rev. A, 74, 042514. http://dx.doi.org/10.1103/Phys-RevA.74.042514.
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• 6. Słabkowska, K., Polasik, M., Szymańska, E., Starosta, J., Syrocki, Ł., Rzadkiewicz, J., & Pereira, N. R. (2014). Modeling of the L and M x-ray line structures for tungsten in high-temperature tokamak plasmas. Phys. Scr., T161, 014015. DOI: 10.1088/0031-8949/2014/T161/014015.
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• 12. Sauli, F. (1997). GEM: A new concept for electron amplification in gas detectors. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 386, 531–534. DOI: 10.1016/S0168-9002(96)01172-2.
• 13. Chernyshova, M., Czarski, T., Dominik, W., Jakubowska, K., Rzadkiewicz, J., Scholz, M., Pozniak, K., Kasprowicz, G., & Zabolotny, W. (2014). Development of GEM gas detectors for X-ray crystal spectrometry. JINST, 9, C03003. DOI: 10.1088/1748-0221/9/03/C03003.
• 14. Rzadkiewicz, J., Dominik, W., Scholz, M., Chernyshova, M., Czarski, T., Czyrkowski, H., Dabrowski, R., Jakubowska, K., Karpinski, L., Kasprowicz, G., Kierzkowski, K., Pozniak, K., Salapa, Z., Zabolotny, W., Blanchard, P., Tyrrell, S., Zastrow, K. -D., & JET EFDA Contributors. (2013). Design of T-GEM detectors for X-ray diagnostics on JET. Nucl. Instrum. Methods Phys. Res. Sect. A-Accel. Spectrom. Dect. Assoc. Equip., 720, 36–38. DOI: 10.1016/j.nima.2012.12.041.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.