%0 Journal Article
%A Kinna, D.
%A Huber, V.
%A Arnoux, G.
%A Balboa, I.
%A Balorin, C.
%A Carman, P.
%A Carvalho, P.
%A Collins, S.
%A Conway, N.
%A McCullen, P.
%A Jachmich, S.
%A Jouve, M.
%A Linsmeier, Ch
%A Lomanowski, B.
%A Lomas, P. J.
%A Lowry, C. G.
%A Maggi, C. F.
%A Matthews, G. F.
%A May-Smith, T.
%A Meigs, A.
%A Mertens, Philippe
%A Nunes, I.
%A Price, M.
%A Puglia, P.
%A Riccardo, V.
%A Rimini, F. G.
%A Sergienko, G.
%A Tsalas, M.
%A Zastrow, K-D
%A Huber, Alexander
%T The near infrared imaging system for the real-time protection of the JET ITER-like wall
%J Physica scripta
%V T170
%@ 1402-4896
%C Bristol
%I IoP Publ.
%M FZJ-2017-07892
%P 014027 
%D 2017
%X 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.
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000414120500027
%R 10.1088/1402-4896/aa8a14
%U https://juser.fz-juelich.de/record/840355