Progress in ITER Diagnostics Michael Walsh and the

Progress in ITER Diagnostics Michael Walsh and the ITER Diagnostics Team (IO Diagnostics, all DAs and supporters, associated groups) 24/09/2012 The views and opinions expressed herein do not necessarily reflect those of the ITER Organization 17 th ADAS Workshop, Cadarache, France 2012 Page 1

Overview • • • Our purpose Up on site Where are we going? Where are we now? Integration What next? 17 th ADAS Workshop, Cadarache, France 2012 Page 2

ITER Scope - Mission Goals Physics: • ITER is designed to produce a plasma dominated by a-particle heating • produce a significant fusion power amplification factor (Q ≥ 10) in long-pulse operation • aim to achieve steady-state operation of a tokamak (Q = 5) • retain the possibility of exploring ‘controlled ignition’ (Q ≥ 30) Technology: • demonstrate integrated operation of technologies for a fusion power plant • test components required for a fusion power plant • test concepts for a tritium breeding module 17 th ADAS Workshop, Cadarache, France 2012 Page 3

ITER Plasma Scenario - ELMy H-mode A Q=10 scenario with: ke. V Ti 1019 m-3 Ip=15 MA, Paux=40 MW, H 98(y, 2)=1 ne Te 10 n. He % Zeff f. He q. Y MA/m 2 m 2 s-1 ce Current Ramp-up Phase 17 th ADAS Workshop, Cadarache, France 2012 Page 4

How to go forward • Achieving the ITER mission is a challenge and we are tasked with this • And this will only be done with your skills, expertise, collaboration and tenacity – but we must be coordinated • Recently voted no 2 in “The 10 World Changing Experiments that will shape the future and affect every single person including you”- BBC Focus 17 th ADAS Workshop, Cadarache, France 2012 Page 5

TF Coil – To contextualise Mass of (1) TF Coil: 16 m Tall x 9 m Wide, ~360 t Boeing 747 -300 (Maximum Takeoff Weight) ~377 t 17 th ADAS Workshop, Cadarache, France 2012 Page 6

A more integrated system 17 th ADAS Workshop, Cadarache, France 2012 Page 7

What is happening up on site? 17 th ADAS Workshop, Cadarache, France 2012 Page 8

What is happening up on site? Eighteen months after the beginning of excavation works (August 2010), the Tokamak Complex ground support structure is completed in April. Photo: Engage-AP 17 th ADAS Workshop, Cadarache, France 2012 Page 9

Spreader installed in PF Building ITER Diagnostic Division Page 10

Powerline Installation In difficult areas, helicopters are used to position temporary "pulling cables" that will later be attached to the actual power cables and pulled by a ground-based winch. Photo: © CEA/Corinne Guis (Feb 2012) ITER Diagnostic Division Page 11

Office building progressing well New office building should be ready by October (Diags move there in November- to floor 3) ITER Diagnostic Division Page 12

Current plan for diagnostics • Plan is to complete majority of CDRs this year • First deliveries in diagnostics in 2 years • Majority of systems on ITER in approximately 8 -9 years • Design review status of systems………………… 17 th ADAS Workshop, Cadarache, France 2012 Page 13

Diagnostic Design Review Progress 2010/11/12 System System *Generic Upper Port Structure PDR Micro-fission chambers Windows and Window Assemblies Divertor Thermocouples (inner) SXR EQ 11 PI Residual Gas Analyser Activation system Equatorial VUV Spectroscopy Divertor Thermocouples (outer) Radial Neutron camera UPP 11, 14 PI Neutron flux Monitors Eq 7 UPP X-ray Spectrometer Equatorial X-ray Spectroscopy Halpha (and Visible Spectroscopy) Divertor IR EQPP 9 PI Neutral Particle Analyser HFS Reflectometer Divertor VUV Spectroscopy Divertor TS Divertor Impurity Monitor UPP 10 PI Upper Visible/IR Magnetics Part 2 Divertor Neutron Flux Monitor LFS Reflectometry Poloidal Polarimetry UPP 9 PI VUV Upper port Generic EQ Port Structure CDR *Eq Port Plug Generic PDR TIP UPP 18 PI TF Magnetics (CDR, PDR) Pressure Gauges Magnetics Part III ECE Lo 2 PI Concept design except * which is PDR Each ITER Partner is involved in Diagnostics and well integrated at the DRs PA Signed, In house work, PA signed in next 6 weeks, other Several more CDRs/PDRs coming up this year and early next year 17 th ADAS Workshop, Cadarache, France 2012 Page 14

Coordination • Development of new planning for ITER based on more collaborative approach • New terms are : OPS SMP DWS • • Worked very closely with all ITER (IO and DAs) Now reasonable basis plan Now will need to make it happen Total must be greater than the sum of the parts 17 th ADAS Workshop, Cadarache, France 2012 Page 15

Integration 17 th ADAS Workshop, Cadarache, France 2012 Page 16

Zones of integration (infrastructure) 17 th ADAS Workshop, Cadarache, France 2012 Page 17

First Mirrors Major Areas to be Tackled ITPA SWG identified 6 main areas: • Material choice for erosion and deposition dominated conditions • Predictive modeling of plasma/neutral environment and • Irradiation effects on mirror optical properties • Mitigation of deposition – Beryllium (and Carbon) • Cleaning of deposited layers Beryllium (and/or Carbon) • Laser/Plasma Sputtering • Mirror tests under neutron, gamma, and x-ray environment • Engineering and Manufacturing of ITER first mirrors and supporting mirror surface recovery systems 17 th ADAS Workshop, Cadarache, France 2012 Page 18

Reflections: Look at Upper Vis/IR System 17 th ADAS Workshop, Cadarache, France 2012 Page 19

Reflection simulation examples for ITER Infrared diagnostics No reflections Realistic reflections with Be, W and CFC divertor [M. H. Aumeunier et al. , SOFE 2011] Realistic reflections with Be and W divertor – note significant influence of angular dependence of W emissivity, which is not corrected here The maximum temperature is estimated relatively correctly, especially if angular dependence of emissivity is accounted for, but in cooler areas large deviations are observed due to reflections. Knowledge of optical properties of observed target is important. 17 th ADAS Workshop, Cadarache, France 2012 Page 20

Spectroscopy • Many CDRs completed here (x-ray, VUV, Balmer-alpha) • Active Spectroscopy coming up next month (RF CXRS) • KO-VUV first Prototype results last week • For visible systems – shiny vessel so need to be careful of divertor light – modelling here • ADAS involved in modelling at different stages • Good to see an overall modelling strategy that meshes • Need to work together to provide well verified models 17 th ADAS Workshop, Cadarache, France 2012 Page 21

Summary • Procurement contracts for many systems are now officially in place • All DAs now have at least one PA project (Annex B) • Many of the projects are really underway • Timely delivery of the ITER mission is very important (including diagnostics!) • We need to continue to work together 17 th ADAS Workshop, Cadarache, France 2012 Page 22

Thank you for listening 17 th ADAS Workshop, Cadarache, France 2012 Page 23