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Tests on TS samples at a laboratory scale of:
1. Laser detritiation technique focus on :• layer removal • Castellations treatments• Dust control and removal
2. Test of thermal response of layers (layer characterisation)
3. Test of Laser Induced Breakdown Spectroscopy (LIBS) (layer composition)
Comprehensive Goal :• Prepare the installation of these techniques on the AIA
H. Roche, C Grisolia
Ab so rb e ur
La se r fib ré p ulsé Ytte rb ium
Alim . la se r 24V 10A
Un ité c o ntrô le / c o m m a nd e la se r
Alim e n ta tio n & c o ntrô leTê te g a lva X - Y
PC d e c o ntrô le - c o m m a nd e
M o nite u r d e c o ntrô le
M iro ir 99%
C C D d e visua lisa tio n
Tê te g a lva . X - Y
Aig uille LPT
Ablation, thermal response & LIBS: lab studies (resp. H Roche)
Ablation:System already existing(first trials in 3-4 months)To be coupled with characterisation (X Courtois)
Thermal response:Detector etc. ok Need to be installed And tested(on-going effort in Saclay)
LIBS:Need of spectrometer(could be borrow from Saclay)Need to be installed And tested
Pyrometer
Needs
• 2 LPT fingers needed with deposited areas (bridges welcome)
• No need of hardware except for LIBS (spectro to be borrowed)
• Very small budget in 2007 (less than 5 k€)
• PPY : ok (at least 6 months of work)
AblationCEA (Saclay), UKAEA, TEKES
Thermal response (layer characterisation)CEA Saclay, CEA Cadarache
Thermal response (layer characterisation)tests of layer removal in Tore Supra foreseen in 2007 couple with lock in thermography studies.Procedure : lock in characterisation + laser ablation + lock in characterisation
alim. laser 24V 10A Unité contrôle/ commande laser alim.
CCD
Hall Tore
Enceinte de Tore Supra
Bâti intermédiaire
Plaque de protection
laser
miroir
Tête galvano-métrique
aiguilles
poutre
Camera CCD
Bâti fixe
laser pulsé fibré Ytterbium
Moniteur de contrôle Carte et alimentation
de la tête galvano-métrique
LIBS (layer composition + feedback control on the ablation process)
CEA SaclayOngoing studies at JET
AIA
Detritiation +Heating +LIBSTool(s)