Towards a general scaling of the Scrape-off Layer density width

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389021%3A_____%2F15%3A00474109" target="_blank" >RIV/61389021:_____/15:00474109 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—

Result language
angličtina
Original language name
Towards a general scaling of the Scrape-off Layer density width
Original language description
The width of the Scrape-off Layer –defined here as the typical radial distance travelled by particles ejected at the separatrix before hitting some PFC- is a key feature for next generation tokamaks, as it will determine erosion levels and heat loads at many criticalnplasma facing components, and most critically at the main chamber first wall. Recent Lmode experiments carried out on the ITER stepladder (including COMPASS, ASDEX Upgrade and JET tokamaks) [1] have proven the link between an increase in filament sizenat the outer midplane and the onset of the density profile flattening known as “shoulder” [2-4]. This study indicates that the increased effective collisionality, Ldiv, [5,6] in the divertor region at the onset of detachment leads to a change in the regime of filamentary propagation, greatly enhancing radial particle and heat transport. This has been explained as the effect of filament disconnection from the wall: when collisionality along the field line increases over a certain value, the parallel term of the charge conservation equation becomes negligible and the filament goes from Sheath Limited (SL) regime [7] to Inertial (IN) regime [8]. In order to refine the findings in [1] and confirm the validity of this model, a series of dedicated experiments have been carried out in AUG.n
Czech name
—
Czech description
—

Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
EPS 2015:42nd European Physical Society Conference on Plasma Physics
ISBN
2-914771-98-3
ISSN
—
e-ISSN
—
Number of pages
4
Pages from-to
—
Publisher name
European Physical Society
Place of publication
Mulhouse
Event location
Lisbon
Event date
Jun 22, 2015
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
—

Similar results(10)