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ASDEX Upgrade

Probably the most systematic predictive and scaling studies with emphasis on an as complete as possible implementation of atomic, molecular and surface effects for a divertor configuration have been carried out for the ASDEX Upgrade tokamak. Making connection here in particular to the chapter by U. Fantz in this volume (and references therein) we discuss here the initially unexpected role played by the molecular chemistry in dense cold divertor plasmas. [Pg.54]

The two simulations, basically solutions to the edge plasma model described in the previous section, for a typical set of ASDEX Upgrade model parameters, are identical in all aspects but one in case f (labelled 5a on... [Pg.56]

In summary The ASDEX Upgrade modeling results could be grouped into two cases one with explicit treatment of the vibration ally excited molecules (and the consequences thereof), and one without. Agreement with experimental (spectroscopic) data could only be achieved in the first case. [Pg.57]

For ASDEX Upgrade, detachment is harder to achieve with the presence of vibrationally excited molecules than without. This result is exactly the opposite of what one would have expected without such a detailed bookkeeping of the various competing processes and forces, as it is currently only provided by the edge plasma simulation codes employed here. [Pg.58]

Fig. 3.16. Normalized ELM energy loss (AITELM/IFpeci) versus pedestal plasma collisionality for a large range of Type I ELMy H-mode plasmas in ASDEX Upgrade, DIII-D, JT-60U and JET including various plasma triangularities, ratios of Pinput/Fl-h and pellet triggered ELMs and qg5 = 3-4 [33]... Fig. 3.16. Normalized ELM energy loss (AITELM/IFpeci) versus pedestal plasma collisionality for a large range of Type I ELMy H-mode plasmas in ASDEX Upgrade, DIII-D, JT-60U and JET including various plasma triangularities, ratios of Pinput/Fl-h and pellet triggered ELMs and qg5 = 3-4 [33]...
Fig. 3.20. Histogram of the probability distribution function for the proportion of main plasma ELM energy loss (AWelm) that reaches the divertor target (AWe/m) for ASDEX Upgrade discharges [33,44]... Fig. 3.20. Histogram of the probability distribution function for the proportion of main plasma ELM energy loss (AWelm) that reaches the divertor target (AWe/m) for ASDEX Upgrade discharges [33,44]...
Fig. 3.23. Duration of the ELM power pulse from infrared measurements for Type I ELMs in ASDEX Upgrade, JET and JT-60U versus the SOL ion flow... Fig. 3.23. Duration of the ELM power pulse from infrared measurements for Type I ELMs in ASDEX Upgrade, JET and JT-60U versus the SOL ion flow...
Fig. 4.1. Emission spectra of H2 and D2 (left column) and of CH and CD (right column) obtained in the divertor of ASDEX Upgrade during gas puff experiments... Fig. 4.1. Emission spectra of H2 and D2 (left column) and of CH and CD (right column) obtained in the divertor of ASDEX Upgrade during gas puff experiments...
The author would like to mention the contributions of D. Wunderlich for the calculations with the collisional-radiative model, D. Reiter and D. Coster for running the B2-EIRENE code and the ASDEX Upgrade Team as well as the plasma spectroscopic team at Augsburg University for their assistance. [Pg.119]

U. Fantz, K. Behringer, J. Gafert, D. Coster, and ASDEX Upgrade Team, J. Nucl. Mater. 266-269 (1999) 490... [Pg.160]

Such species will be deposited in fusion devices in the vicinity of the location of erosion after few collisions and not travel deep into pump ducts and other remote areas. Similar conclusions are deduced from cavity collector probes introduced directly in fusion devices such as JET and ASDEX Upgrade [55,56]. [Pg.216]

The surface loss probability of a species of interest can be determined using the cavity technique as described in Sect. 11.3.1. So far, cavity probes have been applied in low-temperature plasma experiments in the laboratory and in the fusion experiments JET and ASDEX Upgrade. [Pg.258]

V. Rohde, H. Maier, K. Krieger, R. Neu, J. Perchermaier, and ASDEX Upgrade Team. Carbon layers in the divertor of ASDEX Upgrade. J. Nucl. Mater 290-293, 317 (2001)... [Pg.281]

V. Rohde, M. Mayer, and the ASDEX Upgrade Team On the formation of a-C D layers and parasitic plasmas underneath the roof baffle of the ASDEX Upgrade divertor. J. Nucl. Mater 313-316, 337 (2003)... [Pg.281]

M. Mayer, V. Rohde, A. von Keudell, ASDEX Upgrade Team Characterisation of deposited hydrocarbon layers below the divertor and in the pumping ducts of ASDEX Upgrade. J. Nucl. Mater. 313-316, 429 (2003)... [Pg.283]

The installation of large areas of tungsten on the inner central column of ASDEX Upgrade [26] provides additional useful information on the migra-... [Pg.300]

See other pages where ASDEX Upgrade is mentioned: [Pg.31]    [Pg.31]    [Pg.50]    [Pg.52]    [Pg.54]    [Pg.55]    [Pg.61]    [Pg.64]    [Pg.65]    [Pg.80]    [Pg.80]    [Pg.81]    [Pg.82]    [Pg.83]    [Pg.84]    [Pg.86]    [Pg.99]    [Pg.102]    [Pg.109]    [Pg.117]    [Pg.155]    [Pg.161]    [Pg.186]    [Pg.234]    [Pg.250]    [Pg.262]    [Pg.290]    [Pg.290]    [Pg.301]    [Pg.302]    [Pg.310]    [Pg.311]    [Pg.312]   
See also in sourсe #XX -- [ Pg.31 , Pg.56 , Pg.64 , Pg.99 , Pg.109 , Pg.155 , Pg.186 , Pg.216 , Pg.262 , Pg.290 , Pg.301 ]



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