Results 1 to 10 of about 1,348 (158)

Impurity-seeded plasma experiments on JET [PDF]

Nuclear Fusion, 2003
Scaling to larger tokamaks of high confinement plasmas with radiating edges, induced by impurities, is being studied through internationally collaborative experiments on JET. In campaigns till the end of 2000, three different regimes have been explored. A small number of limiter L-mode discharges seeded with neon have most closely repeated the approach
Maddison, G. P., Brix, M., Hillis, D. L., Hogan, J., Horton, L. D., Ingesson, L. C., Jachmich, S., Jackson, G. L., Kallenbach, A., Koslowski, H. R., Lawson, K. D., Loarte, A., Budny, R., Matthews, G. F., McKee, G. R., Meigs, A. G., Messiaen, A. M., Milani, F., Monier-Garbet, P., Murakami, M., Nave, M. F. F., Ongena, J., Puiatti, M. E., Charlet, M., Rachlew, E., Rapp, J., Sharapov, S., Staebler, G. M., Stamp, M., Strachan, J. D., Telesca, V. M., Tokar, M. Z., Unterberg, B., Valisa, M., Coffey, I. H., Zastrow, S. A., Cordey, J. G., Dumortier, P., Erents, S. K., Hawkes, N. C., von Hellermann, M.   +40 more
  +9 more sources

Impurity radiation seeding of neoclassical tearing mode growth

Nuclear Fusion
The physics of neoclassical tearing modes (NTMs) is of great concern to tokamak plasma stability and performance, especially in the burning plasma regime.
Shiyong Zeng, Ping Zhu, Eric C. Howell
doaj   +3 more sources

Long-pulse H-mode operation with stored-energy monitoring for detachment feedback control with a new lower tungsten divertor in EAST

Nuclear Fusion, 2023
One of the key challenges for future fusion research is to mitigate the high steady-state heat load on the divertor target plates, and divertor detachment offers a promising solution. The Experimental Advanced Superconducting Tokamak (EAST) has developed
Y.Q. Tao, G.S. Xu, K. Wu, Q.Q. Yang, L. Wang, Q.P. Yuan, Y.F. Wang, X. Lin, L.Y. Meng, G.F. Ding, L. Yu, R. Chen, J.B. Liu, N. Yan, H. Lan, P.J. Sun, K.D. Li, J.C. Xu, Y.M. Duan, Q. Zang, Y.F. Jin, L. Zhang, S.X. Wang, K.N. Geng, R.R. Liang   +24 more
doaj   +1 more source

Divertor Detachment with Multi-Species Impurity Seeding in LHD

Plasma and Fusion Research, 2020
Kiyofumi Mukai, S Masuzaki, Yuki Hayashi   +2 more
exaly   +3 more sources

Improved ELM scaling with impurity seeding in JET [PDF]

Plasma Physics and Controlled Fusion, 2003
Argon-seeded H-modes in low triangularity pumped-limiter-like, and medium to high triangularity divertor, configurations on JET are described, focusing upon ELM effects. Appropriate fuelling and seeding strategies in each geometry have combined good confinement with density around the Greenwald level, accompanied by ELMS shown to have explicitly Type I
Maddison, G. P., Budny, I. L., Strachan, J. D., Dumortier, P., Jachmich, S., Loarte, A., Messiaen, A. M., Monier-Garbet, P., Nave, N. I., Ongena, J., Rapp, J.   +10 more
  +6 more sources

The influence of impurities in natural seeds of alfalfa and red clover on the seed cleaning process [PDF]

Journal on Processing and Energy in Agriculture, 2021
The paper presents the results of the cleaning process of five different lots of natural alfalfa seeds and five different lots of natural red clover seeds. Natural alfalfa and red clover seeds had 75 % to 77 % purity. The experiment was performed in the seed processing center of the Institute for Forage Crops Kruševac.
Dragoslav Đokić, Dragan Terzić, Vera Rajičić, Sanja Živković, Violeta Oro, Jasmina Milenković, Ranko Koprivica   +6 more
openaire   +3 more sources

Predictive modelling of impurity seeded plasmas in JET [PDF]

Plasma Physics and Controlled Fusion, 2002
Seeding of impurities into JET resulted in a pronounced modification of plasma confinement properties. In order to analyse the underlying mechanisms a predictive transport modelling has been performed by means of two approaches. (i) The Chalmers advanced fluid model for temperature gradient driven instabilities is applied to determine all transport ...
M Z Tokar, H Nordman, J Weiland, J Ongena, V Parail, B Unterberg, contributors to the EFDA-JET Workprogramme   +6 more
openaire   +3 more sources

Mechanism of enhanced ion temperature by impurity seeding in EAST H-mode plasma

Nuclear Fusion, 2023
Ion temperature ( T _i ) profiles are commonly observed to increase in peaking, leading to higher central T _i , after impurity seeding in the EAST H-mode plasma. Argon can be more efficient at raising T _i than neon.
Xiuda Yang, Xianzu Gong, Jinping Qian, Yifei Jin, Pierre Manas, Pan Li, Clarisse Bourdelle, Yuqi Chu, Bin Zhang, Yingjie Chen, Yunchan Hu, Yingying Li, Kedong Li, Xuexi Zhang, Yanmin Duan, Hongming Zhang, Tianqi Jia, Haiqing Liu, Qing Zang, Juan Huang, Rui Ding, Liang Wang, Guosheng Xu   +22 more
doaj   +1 more source

Divertor Impurity Seeding Experiments at the COMPASS Tokamak [PDF]

Nuclear Fusion, 2019
Partial detachment is the desired regime for the baseline burning plasma scenario in ITER and other next-step devices, as it allows for the dissipation of the majority of the energy carried by charged particles through the scrape-off-layer and thus avoids localised heat flux deposition in the divertor region.
Komm, M., Khodunov, I., Cavalier, J., Horacek, J., Seidl, J., Naydenkova, D., Adamek, J., Bilkova, P., Bohm, P., Devitre, A., Dimitrova, M., Elmore, S., Faitsch, M., Hacek, P., Havlicek, J., Havranek, A., Imrisek, M., Krbec, J., Peterka, M., Panek, R., Popov, T., Samoylov, O., Tomes, M., Tomova, K., Vondracek, P., Weinzettl, V.   +25 more
openaire   +5 more sources

Impurity control study of radiative tungsten divertor in EAST tokamak

Nuclear Materials and Energy, 2020
EAST was equipped with W-coated divertor plates and dome for the upper divertor, the remaining plasma facing components include the plasma facing components at lower divertor consisted of Carbon materials, at the baffles and main chamber walls consisted ...
YiPing Chen, Dongrui Zhang, Ling Zhang, Liqun Hu, EAST team   +4 more
doaj   +1 more source