Results 31 to 40 of about 108,499 (193)

Safety Analysis in Large Volume Vacuum Systems Like Tokamak: Experiments and Numerical Simulation to Analyze Vacuum Ruptures Consequences

Advances in Materials Science and Engineering, Volume 2014, Issue 1, 2014., 2014
The large volume vacuum systems are used in many industrial operations and research laboratories. Accidents in these systems should have a relevant economical and safety impact. A loss of vacuum accident (LOVA) due to a failure of the main vacuum vessel can result in a fast pressurization of the vessel and consequent mobilization dispersion of ...
A. Malizia, I. Lupelli, M. Richetta, M. Gelfusa, C. Bellecci, P. Gaudio, S. K. S. Parashar   +6 more
wiley   +1 more source

Feedback-controlled NTM stabilization on ASDEX Upgrade

EPJ Web of Conferences, 2015
On ASDEX Upgrade a concept for real-time stabilization of NTMs has been realized and successfully applied to (3,2)- and (2,1)-NTMs. Since most of the work has meanwhile been published elsewhere, a short summary with the appropriate references is given ...
Stober J., Barrera L., Behler K., Bock A., Buhler A., Eixenberger H., Giannone L., Kasparek W., Maraschek M., Mlynek A., Monaco F., Poli E., Rapson C.J., Reich M., Schubert M., Treutterer W., Wagner D., Zohm H.   +17 more
doaj   +1 more source

Tungsten experiences in ASDEX Upgrade and JET [PDF]

2013 IEEE 25th Symposium on Fusion Engineering (SOFE), 2013
ASDEX Upgrade (AUG) has been converted to all W plasma facing components (PFCs) in 2007 and JET has implemented the ITER like wall (ILW) project (2011) using the same PFC configuration as ITER during its active phase, namely Be in the main chamber and tungsten in the divertor.
Neu, R., Brezinsek, S., Pautasso, G., Putterich, Th., Ryter, F., Schweinzer, J., Beurskens, M., Bobkov, V., de Vries, P., Giroud, C., Joffrin, E., Kallenbach, A., Matthews, G. F., Mayoral, M.-L.   +13 more
openaire   +3 more sources

Surface features of strongly heated bulk tungsten divertor plates at ASDEX Upgrade

Nuclear Materials and Energy, 2023
Solid tungsten tiles exposed at the outer strike point module of the ASDEX Upgrade divertor show cracks parallel to surface in the bulk and humps at the surface. At ASDEX Upgrade these horizontal cracks were observed for the first time. About 10 % of all
V. Rohde, M. Balden, K. Hunger, I. Zammuto, A. Herrmann, R. Neu   +5 more
doaj   +1 more source

Erosion of tungsten and carbon markers in the outer divertor of ASDEX-Upgrade [PDF]

, 2007
The erosion of tungsten and carbon marker layers was studied in the outer divertor of ASDEX Upgrade. The outer strike point area and a large fraction of the outer baffle are net erosion areas for both materials. The net erosion rate of carbon is about 10–
Likonen, J., Rohde, V., V Rohde, J L Chen, Mayer, M., Ramos, G., Chen, J.L., J Likonen, ASDEX Upgrade Team, G Ramos, Vainonen-Ahlgren, E., Vainonen-Ahlgren, Elizaveta, Chen, J., Likonen, Jari; id_orcid, E Vainonen-Ahlgren, M Mayer   +15 more
core   +1 more source

Surface loss probabilities of boron-hydride radicals in W7-X and ASDEX Upgrade

Nuclear Materials and Energy
The surface loss probabilities of boron-hydride radicals on silicon surfaces have been measured during boronisations for wall conditioning in the stellarator W7-X and the tokamak ASDEX Upgrade using the cavity technique.
M. Mayer, S. An, T. Bräuer, D. Cipciar, C.P. Dhard, C. Killer, D. Naujoks, V. Rohde, R. Steinwehr, U. von Toussaint, L. Vano, H. Viebke   +11 more
doaj   +1 more source

The compact neutron spectrometer at ASDEX Upgrade [PDF]

Review of Scientific Instruments, 2011
The first neutron spectrometer of ASDEX Upgrade (AUG) was installed in November 2008. It is a compact neutron spectrometer (CNS) based on a BC501A liquid scintillating detector, which can simultaneously measure 2.45-MeV and 14-MeV neutrons emitted from deuterium (D) plasmas and γ radiation. The scintillating detector is coupled to a digital pulse shape
Giacomelli, L., Zimbal, A., Tittelmeier, K., Schuhmacher, H., Tardini, G., Neu, R., ASDEX Upgrade Team   +6 more
openaire   +4 more sources

Tungsten erosion and redeposition in the all-tungsten divertor of ASDEX Upgrade [PDF]

, 2009
Net erosion and deposition of tungsten (W) in the ASDEX Upgrade divertor were determined after the 2007 campaign by using thin W marker stripes. ASDEX Upgrade had full-W plasma-facing components during this campaign.
Hakola, Antti; id_orcid, Andrzejczuk, M., Rasinski, M., Wiltner, A., Likonen, J., Sugiyama, K., Rohde, V., Dux, R., Kurzydlowski, K., Mayer, M., Neu, R., Ramos, G., Hakola, A., Koivuranta, S., ASDEX Upgrade Team, Zielinski, Matern, G., Koivuranta, Seppo, Zielinski, W., Fortuna-Zalesna, E., Kurzydlowski, K. J., Likonen, Jari; id_orcid, Krieger, K., Kurzydlowski, K.J.   +23 more
core   +1 more source

The quasi-continuous exhaust regime in ASDEX Upgrade and JET

Nuclear Materials and Energy
The quasi-continuous exhaust (QCE) regime is a type-I ELM-free high confinement regime obtained at high plasma shaping and high separatrix density. A comparison with various ELM-free regimes in the literature is presented together with potential physics ...
M. Faitsch, M. Dunne, E. Lerche, P. Lomas, I. Balboa, P. Bilkova, P. Bohm, L. Gil, G.F. Harrer, A. Kappatou, D. Kos, B. Labit, L. Radovanovic, A. Redl, O. Sauter, S. Silburn, E.R. Solano, A. Tookey, E. Viezzer, E. Wolfrum, U. Stroth   +20 more
doaj   +1 more source

Investigation of probe surfaces after ion cyclotron wall conditioning in ASDEX upgrade

Nuclear Materials and Energy, 2017
For the first time, material analysis techniques have been applied to study the effect of ion cyclotron wall conditioning (ICWC) on probe surfaces in a metal-wall machine.
A. Garcia-Carrasco, P. Petersson, T. Schwarz-Selinger, T. Wauters, D. Douai, V. Bobkov, R. Cavazzana, K. Krieger, A. Lyssoivan, S. Möller, M. Spolaore, V. Rohde, M. Rubel   +12 more
doaj   +1 more source