TY - JOUR
T1 - Cracks avoidance with a modified solid tungsten divertor in ASDEX Upgrade
AU - the ASDEX Upgrade Team
AU - Zammuto, I.
AU - Li, M.
AU - Herrmann, A.
AU - Jaksic, N.
AU - Rohde, V.
AU - Balden, M.
AU - Vorbrugg, S.
AU - Matern, G.
AU - Greuner, H.
AU - Neu, R.
AU - Kallenbach, A.
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/11
Y1 - 2018/11
N2 - To clarify the suitability of solid tungsten as plasma facing material, a new divertor, DIV-III, entered in operation in ASDEX Upgrade (AUG) in 2014. Since the first experimental campaign, AUG divertor tiles faced crack issues. Trying to identify the reasoning, a new set of tiles was installed in 2016: many precautions were taken to reduce the stresses possibly causing the cracks. The AUG campaign 2017 started in March and the first results were collected during the short summer opening in 2017. This paper reports on the modification of the tile setup, based on Finite Element Modelling, and on the progress achieved in the first operation phase.
AB - To clarify the suitability of solid tungsten as plasma facing material, a new divertor, DIV-III, entered in operation in ASDEX Upgrade (AUG) in 2014. Since the first experimental campaign, AUG divertor tiles faced crack issues. Trying to identify the reasoning, a new set of tiles was installed in 2016: many precautions were taken to reduce the stresses possibly causing the cracks. The AUG campaign 2017 started in March and the first results were collected during the short summer opening in 2017. This paper reports on the modification of the tile setup, based on Finite Element Modelling, and on the progress achieved in the first operation phase.
KW - ASDEX upgrade
KW - Tungsten crack
KW - Tungsten divertor
KW - Tungsten heavy alloy
UR - http://www.scopus.com/inward/record.url?scp=85046690460&partnerID=8YFLogxK
U2 - 10.1016/j.fusengdes.2018.04.066
DO - 10.1016/j.fusengdes.2018.04.066
M3 - Article
AN - SCOPUS:85046690460
SN - 0920-3796
VL - 136
SP - 1052
EP - 1057
JO - Fusion Engineering and Design
JF - Fusion Engineering and Design
ER -