TY  - JOUR
AU  - Kinna, D.
AU  - Huber, V.
AU  - Arnoux, G.
AU  - Balboa, I.
AU  - Balorin, C.
AU  - Carman, P.
AU  - Carvalho, P.
AU  - Collins, S.
AU  - Conway, N.
AU  - McCullen, P.
AU  - Jachmich, S.
AU  - Jouve, M.
AU  - Linsmeier, Ch
AU  - Lomanowski, B.
AU  - Lomas, P. J.
AU  - Lowry, C. G.
AU  - Maggi, C. F.
AU  - Matthews, G. F.
AU  - May-Smith, T.
AU  - Meigs, A.
AU  - Mertens, Philippe
AU  - Nunes, I.
AU  - Price, M.
AU  - Puglia, P.
AU  - Riccardo, V.
AU  - Rimini, F. G.
AU  - Sergienko, G.
AU  - Tsalas, M.
AU  - Zastrow, K-D
AU  - Huber, Alexander
TI  - The near infrared imaging system for the real-time protection of the JET ITER-like wall
JO  - Physica scripta
VL  - T170
SN  - 1402-4896
CY  - Bristol
PB  - IoP Publ.
M1  - FZJ-2017-07892
SP  - 014027 
PY  - 2017
AB  - This paper describes the design, implementation and operation of the near infrared (NIR) imaging diagnostic system of the JET ITER-like wall (JET-ILW) plasma experiment and its integration into the existing JET protection architecture. The imaging system comprises four wide-angle views, four tangential divertor views, and two top views of the divertor covering 66% of the first wall and up to 43% of the divertor. The operation temperature ranges which must be observed by the NIR protection cameras are, for the materials used on JET: Be 700 °C–1400 °C; W coating 700 °C–1370 °C; W bulk 700 °C–1400 °C. The Real-Time Protection system operates routinely since 2011 and successfully demonstrated its capability to avoid the overheating of the main chamber beryllium wall as well as of the divertor W and W-coated carbon fibre composite (CFC) tiles. During this period, less than 0.5% of the terminated discharges were aborted by a malfunction of the system. About 2%–3% of the discharges were terminated due to the detection of actual hot spots.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000414120500027
DO  - DOI:10.1088/1402-4896/aa8a14
UR  - https://juser.fz-juelich.de/record/840355
ER  -