Post on 13-Dec-2015
17th ADAS Workshop, Cadarache, France 2012 Page 1
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
17th ADAS Workshop, Cadarache, France 2012 Page 2
Overview
• Our purpose• Up on site• Where are we going?• Where are we now?• Integration• What next?
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Physics:
• ITER is designed to produce a plasma dominated by -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
ITER Scope - Mission Goals
17th ADAS Workshop, Cadarache, France 2012 Page 4
A Q=10 scenario with:Ip=15MA, Paux=40MW, H98(y,2)=1 Te
Ti
ne
10nHe
Zeff
fHe
q
e
ke
V%
MA
/m2
10
19m-3
m2s
-1
Current Ramp-up Phase
-5
-4
-3
-2
-1
0
1
2
3
4
5
3 4 5 6 7 8 9
Z, m
R, m
Plasma start-up in PF Scenario 2
4.5MA (XPF)
0.5MA - XPF
0.5MA
1.5MA
2.5MA
3.5MA
-5
-4
-3
-2
-1
0
1
2
3
4
5
3 4 5 6 7 8 9
Z, m
R, m
Plasma start-up in PF Scenario 2
4.5MA (XPF)
XPF - SOF15MA (SOF)
Dashed line: reference plasma
ITER Plasma Scenario - ELMy H-mode
17th ADAS Workshop, Cadarache, France 2012 Page 5
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
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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
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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
ITER Diagnostic Division Page 11
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 12
Office building progressing well
New office building should be ready by October (Diags move there in November- to floor 3)
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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…………………
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Diagnostic Design Review Progress 2010/11/12
Concept design except * which is PDREach ITER Partner is involved in Diagnostics and well integrated at the DRsPA Signed, In house work, PA signed in next 6 weeks, otherSeveral more CDRs/PDRs coming up this year and early next year
System System System System 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
17th ADAS Workshop, Cadarache, France 2012 Page 15
Coordination
• Development of new planning for ITER based on more collaborative approach
• New terms are :
• 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
OPS
SMP
DWS
17th ADAS Workshop, Cadarache, France 2012 Page 18
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
First Mirrors Major Areas to be Tackled
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No reflectionsRealistic reflections with Be, W and CFCdivertor
Realistic reflections with Be and W divertor – note significant influence of angular dependence of W emissivity, which is not corrected here
Reflection simulation examples for ITER Infrared diagnostics
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.
[M.H. Aumeunier et al., SOFE 2011]
17th ADAS Workshop, Cadarache, France 2012 Page 21
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
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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