Showing 1 - 9 of 9 Journals Results
2021
UKAEA-CCFE-PR(21)11
L. Xiang F. Militello D. Moulton F. Subba L. Aho-Mantila D. Coster M. Wensing T. Lunt M. Wischmeier H. Reimerdes
The SOLPS-ITER simulations of European DEMO reactor, with 450 MW of power to be exhausted, show an increased operational space compared to the conventional single-null configuration. Using a reduced model with fluid neutrals and bundled impurities, we assessed the existence and the boundaries of operational space for DEMO with the conventional sing…
Preprint2016
CCFE-PR(16)16
J.R. Harrison W.A.J. Vijvers C. Theiler B.P. Duval S. Elmore B. Labit B. Lipschultz S.H.M. van Limpt S.W. Lisgo C.K. Tsui H. Reimerdes U. Sheikh K.H.A. Verhaegh M. Wischmeier The MST TCV Teams
Divertor detachment in the TCV tokamak has been investigated through experiments and modelling. Density ramp experiments were carried out in ohmic heated L-mode pulses with the ion B drift directed away from the primary X-point, similar to previous studies [pitts2001]. Before the roll-over in the ion current to the outer strike point, C III and D? …
Preprint Published2016
CCFE-PR(16)22
S. Wiesen M. Groth S. Brezinsek M. Wischmeier JET contributors
An overview is given on the recent progress on edge modelling activities for the JET ITER like wall using the computational tools like the SOLPS or EDGE2D-EIRENE code. The validation process of these codes on JET with its metallic plasma-facing components is an important step towards predictive studies for ITER and DEMO in relevant divertor operati…
Preprint Published2015
CCFE-PR(15)52
E. Havlíčková J. Harrison B. Lipschultz G. Fishpool A. Kirk A. Thornton M. Wischmeier S. Elmore S. Allan
SOLPS simulations of MAST-U have been carried out to identify in more detail the physics and operational properties of novel divertor configurations such as Super-X divertor (SXD), in particular the physics of detachment. A well diagnosed L-mode discharge from MAST has been utilised to determine L-mode transport coefficients representative for MAST…
Preprint Published2015
CCFE-PR(17)17
E. Havlickova M. Wischmeier B. Lipschultz G. Fishpool
An impurity seeding scan has been simulated in three different divertor configurations of MAST-U, showing the effect of the divertor geometry on the transition to detachment. The three configurations include a conventional short divertor, a Super-X divertorwith large poloidal flux expansion and a Super-X divertor with small poloidal flux expansion.…
Preprint Published2014
E. Havlícková W. Fundamenski M. Wischmeier G. Fishpool A.W. Morris
One of the first studies of MAST Upgrade divertor configurations with SOLPS5.0 are presented. We focus on understanding main prospects associated with the novel geometry of the Super-X divertor (SXD). This includes a discussion of the effect of magnetic flux expansion and volumetric power losses on the reduction of target power loads, the effect of…
Published2014
A.E. Havlicková W. Fundamenski F. Subba D. Coster M. Wischmeier G. Fishpool
A 1D code modelling SOL transport parallel to the magnetic field (SOLF1D) is benchmarked with 2D simulations of MAST-U SOL performed via the SOLPS code for two different collisionalities. Based on this comparison, SOLF1D is then used to model the effects of divertor leg stretching in 1D, in support of the planned Super-X divertor on MAST. The aim i…
Published2013
E. Havlícková W. Fundamenski M. Wischmeier G. Fishpool D. Coster
As part of preparations for the new Super-X divertor (SXD) on MAST, the influence of long divertor leg is modelled by SOL transport codes. The SOLPS5.0 package is used to study the effect of the expanded divertor in two dimensions and a comparison between the conventional geometry (standard short divertor) and the SXD geometry is presented. We focu…
Published2012