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Identity physics experiment on internal transport barriers in JT-60U and JET

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Abstract
A series of experiments have been carried out in 2008 at JT-60U and JET to find common characteristics and explain differences between internal transport barriers (ITBs). The identity experiments succeeded in matching the profiles of most dimensionless parameters at the time ITBs were triggered. Thereafter the q-profile development deviated due to differences in non-inductive current density profile, affecting the ITB. Furthermore, the ITBs in JET were more strongly influenced by the H-mode pedestal or edge localized modes. It was found to be difficult to match the plasma rotation characteristics in both devices. However, the wide range of Mach numbers obtained in these experiments shows that the rotation has little effect on the triggering of ITBs in plasmas with reversed magnetic shear. On the other hand the toroidal rotation and more specifically the rotational shear had an impact on the subsequent growth and allowed the formation of strong ITBs.
Keywords
identity, JET, NONINDUCTIVE CURRENT DRIVE, REVERSED SHEAR PLASMAS, HIGH CONFINEMENT, MAGNETIC SHEAR, ELECTRIC-FIELD, TOKAMAK, OPERATION, PERFORMANCE, PEDESTAL, ROTATION, internal transport barriers, JT-60U, nuclear fusion

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Citation

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Chicago
de Vries, PC , Y Sakamoto, X Litaudon, MNA Beurskens, M Brix, Kristel Crombé, T Fujita, et al. 2009. “Identity Physics Experiment on Internal Transport Barriers in JT-60U and JET.” Plasma Physics and Controlled Fusion 51 (12).
APA
de Vries, PC , Sakamoto, Y., Litaudon, X., Beurskens, M., Brix, M., Crombé, K., Fujita, T., et al. (2009). Identity physics experiment on internal transport barriers in JT-60U and JET. PLASMA PHYSICS AND CONTROLLED FUSION, 51(12). Presented at the 36th European-Physical-Society Conference on Plasma Physics.
Vancouver
1.
de Vries P, Sakamoto Y, Litaudon X, Beurskens M, Brix M, Crombé K, et al. Identity physics experiment on internal transport barriers in JT-60U and JET. PLASMA PHYSICS AND CONTROLLED FUSION. 2009;51(12).
MLA
de Vries, PC et al. “Identity Physics Experiment on Internal Transport Barriers in JT-60U and JET.” PLASMA PHYSICS AND CONTROLLED FUSION 51.12 (2009): n. pag. Print.
@article{810552,
  abstract     = {A series of experiments have been carried out in 2008 at JT-60U and JET to find common characteristics and explain differences between internal transport barriers (ITBs). The identity experiments succeeded in matching the profiles of most dimensionless parameters at the time ITBs were triggered. Thereafter the q-profile development deviated due to differences in non-inductive current density profile, affecting the ITB. Furthermore, the ITBs in JET were more strongly influenced by the H-mode pedestal or edge localized modes. It was found to be difficult to match the plasma rotation characteristics in both devices. However, the wide range of Mach numbers obtained in these experiments shows that the rotation has little effect on the triggering of ITBs in plasmas with reversed magnetic shear. On the other hand the toroidal rotation and more specifically the rotational shear had an impact on the subsequent growth and allowed the formation of strong ITBs.},
  author       = {de Vries, PC  and Sakamoto, Y and Litaudon, X and Beurskens, MNA  and Brix, M  and Crombé, Kristel and Fujita, T  and Giroud, C and Hawkes, NC  and Hayashi, N  and Joffrin, E  and Mantica, P and Matsunaga, G and Oyama, N and Parail, V and Salmi, A and Shinohara, K and Strintzi, D and Suzuki, T and Takechi, M and Takenaga, H and Tala, T and Tsalas, M and Urano, H and Voitsekhovitch, I and Yoshida, M},
  issn         = {0741-3335},
  journal      = {PLASMA PHYSICS AND CONTROLLED FUSION},
  keywords     = {identity,JET,NONINDUCTIVE CURRENT DRIVE,REVERSED SHEAR PLASMAS,HIGH CONFINEMENT,MAGNETIC SHEAR,ELECTRIC-FIELD,TOKAMAK,OPERATION,PERFORMANCE,PEDESTAL,ROTATION,internal transport barriers,JT-60U,nuclear fusion},
  language     = {eng},
  location     = {Sofia, Bulgaria},
  number       = {12},
  title        = {Identity physics experiment on internal transport barriers in JT-60U and JET},
  volume       = {51},
  year         = {2009},
}

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