Coordinating Committee on ICRH, 9-10 April 2008. ARC detection development and testing on JET. P. Jacquet 1 , G. Berger-By 2 , T. Blackman 1 , F. Durodi é 3 , M-L. Mayoral 1 , I. Monakhov 1 , M. Nightingale 1 , M. Vrancken 3
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P. Jacquet1, G. Berger-By2, T. Blackman1, F. Durodié3, M-L. Mayoral1, I. Monakhov1,
M. Nightingale1, M. Vrancken3
1UKAEA/Euratom Fusion Association, Culham Science Centre, Abingdon, Oxon, OX14 3DB, United Kingdom.
2Euratom-CEA Association, DSM/DRFC, CEA-Cadarache, 13108 St Paul lez Durance, France.
3ERM-KMS, Association EURATOM-Belgian State, Brussels, Belgium.
From RF model
K1, K2, K3 = function(Capa1, Capa2, freq)
V1meas, V2meas, V-3meas, V+3meas: RF measurements
* , o : 5 nH arc
* , o : 10 nH arc
* , o : 20 nH arc
* , o : 50 nH arcSMAD, analysis of data from test bed
Simulations: with 20% scatter from measurement and modelling errors, the system should be capable to detect 20 nH arcs
RDL 78, measurements with VNA. Remaining scatter in Δ2 from non perfect modelling and measurements errors
Thanks to Mark Vrancken
Scope measurements during an arc event
Thanks to Igor Monakhov
Thanks to T. Blackman
AWACS will increase protection in the following operational conditions:
Preliminary resultsT Blackman 2002
‘Improved Trip Management’ not functioning on A12
‘Improved Trip Management’ functioning on A34
NOTE: Time resolution too course to catch all trip events