In-Situ Monitoring Hydrogen Isotope Retention
in ITER First Wall
E.E. Mukhin1, S.Yu. Tolstyakov1, A.S. Smirnov2, A.N. Bazhenov1, P. Andrew3, R. Barnsley3, I.M. Bukreev1, P.V. Chernakov5, A.E. Gorodetsky6,
M.M. Kochergin1, A.N. Koval1, A.S. Kukushkin3, G.S. Kurskiev1, A.E. Litvinov1, V.N. Litunovsky4, A.V. Markin6, I.V. Mazul4, S.V. Masyukevich1,
I.V. Miroshnikov2, A.N. Novohatsky1, R.A. Pitts3, A.G. Razdobarin1, A.D. Safronov1, D.S. Samsonov1, V.V. Semenov1, R.Kh. Zalavutdinov6, M.J. Walsh3
1Ioffe
Physical Technical Institute, 194021, St. Petersburg, RF
Petersburg State Polytechnical University, 195251, St.Petersburg, RF
3ITER Organization, CS 90 046, 13067 St. Paul Lez Durance Cedex, France
4Efremov Scientific Research Institute of Electrophysical Apparatus 189631 St. Petersburg RF
5Spectral-Tech, ZAO, 194021, St. Petersburg, RF
6Frumkin Institute of Physical Chemistry and Electrochemistry, 119071 Moscow, RF
2Saint
(i) Suggested In-situ Thermal Desorption Spectroscopy for ITER first wall based on
long-term (dozens of seconds) local heating by CW laser
+ low temperature plasma discharge for excitation – Hα, Dα Tα,.
The estimations was made for:
Residual gas analyzer based on Penning gauge
RF discharge in multipactor operational mode
ECR discharge
(~10m from vacuum chamber)
(diagnostic port)
(in the vicinity of heated area)
(ii) Currently: Test bench for approbation new diagnostic technique created at Ioffe Institute
(iii) Next steps – Demonstration how this technique works with co-deposited Be/D films.
The way towards the final goal – implementation in ITER