d.guilhemiter ir/vis diagnostic -- april 4th 2006 -- cadarache euratom 1/22 iter wide-angle viewing...

D.Guilhem ITER IR/VIS Diagnostic -- April 4th 2006 -- Cadarache

Euratom TORE SUPRA

1/22

ITER wide-angle viewing

thermographic and visible system Y.Corre, S.Droineau, A.Geraud, D.Guilhem, R.Jasper, E.Thomas,

G.Madalluno, J.B.Migozzi, C.Walker

Duties:

- IR Thermography of the main chamber

- Visible Spectroscopy (D, impurities: W, Be, C…)

- Runaway Studies


Euratom TORE SUPRA

2/22

This presentation

Our “know-how” for TORE-SUPRA

Optical and Mechanical Pre-designs of IR and VIS

Spatial resolution

Pellet viewing

Points to be Adressed and Developments

Conclusions


Euratom TORE SUPRA

3/22

IR Thermography on Tore-Supra

ICRF

ICRF

ICRF

LH

LH

LPT

ICRF

ICRF

ICRF

LH

LH

LPT Pla

sma

curr

ent (

MA

)T

empe

ratu

re (

°C)

Har

d X

-Ray

Wid

th

Pow

er m

odul

atio

n (%

)A

ddi.

Pow

er (

MW

)

N \\

Pla

sma

curr

ent (

MA

)T

empe

ratu

re (

°C)

Har

d X

-Ray

Wid

th

Pow

er m

odul

atio

n (%

)A

ddi.

Pow

er (

MW

)

N \\


Euratom TORE SUPRA

4/22

Feed-Back ControlParticipates to the security of PFC

- Feed-Back on surface temperature of PFC

- Antenna limiter protections (LHCD, ICRH)

- Main Toroidal Pumped Limiter

- Feed-Back compatible with others feedback

- Width of current profile n//

- Vloop Poloidal Field Current

- Heating power IR thermography

- Detection and Killing of ARCs at the LHCD mouth


Euratom TORE SUPRA

5/22

Global Assembly : Ports Configurations Study

relay telescope

relay telescope

head mirror assembly

E. ThomasCassegrain telescope

1st window

2nd window

INTERSP A CE

P ORT P LUG

EX-VESSEL

relay telescope

relay telescope

head mirror assembly

E. ThomasCassegrain telescope

1st window

2nd window

INTERSP A CE

P ORT P LUG

EX-VESSEL

STARTING POINT:

- 4 Mounting places : EQ#01, EQ#03, EQ#09, EQ#12

- 2 known & approved (by ITER Team) port configurations : 1 + 3

- Preliminary design in Port 1 and Port 3 (C.Walker 2001)

ITER preliminary design EQ #3


Euratom TORE SUPRA

6/22

Diagnostics space occupation port plug EQ#01

optical path 1

optical path 3

Z

r

MSE E11

radial neutron camera

bolometer

PORT PLUG #01

SXRAhigh resolution

neutron spectrometer

optical path 2optical path 1

optical path 3

Z

r

MSE E11

radial neutron camera

bolometer

PORT PLUG #01

SXRAhigh resolution


optical path 2

optical path 3

r

radial neutron camerahigh resolution


optical path 1 & 2

optical path 3

r

radial neutron camerahigh resolution


optical path 1 & 2

Top viewSide view


Euratom TORE SUPRA

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Points of Interest

25°

40°

S. Droineau (2004)

25°

40°

S. Droineau (2004)

40°

S. D

roin

eau

(200

4)

40°

S. D

roin

eau

(200

4)

Blind SpotBlind Spot


Euratom TORE SUPRA

8/22

REFERENCE Optical Line

Cassegrain telescope

Adaptive Relay

1rst Standard Relay

2nd Standard Relay

3rd 1/2 Standard Relay

Cassegrain telescope

Adaptive Relay

1rst Standard Relay

2nd Standard Relay

3rd 1/2 Standard Relay

Distance between Front-End mirror and Cassegrain Relay is FIXEDFixed Fixed


Euratom TORE SUPRA

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Generic Viewing Line

Head mirrors + Deflecting flat mirrors in the dogleg

+ Cassegrain telescopes

+ Adaptative relay

VisibleIR

2 Cassegrains telecopes

Head mirrors Adaptative relay

Flat Mirrors


Euratom TORE SUPRA

10/22

Visible and IR Cassegrain telescopes embedded together

IR Cassegrain

Visible Cassegrain IR Image

Visible Image


Euratom TORE SUPRA

11/22

Ray tracing of one hollow relay

Field groups

IRIR

Visible


Euratom TORE SUPRA

12/22

General view of an assembled line (from the Cassegrain telescopes to the Bio-shield)

Auto-Adaptative relay :

- 5 mm in X,Y directions

- 45 mm Z direction

Auto-Adaptative « sliding » relay

x

y z


Euratom TORE SUPRA

13/22

Integration of Optical design into a Mechanical design


Euratom TORE SUPRA

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Clashes Port-Plug#1

Interference 1 and 2

Interference 3


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Side view of the port-plug

Opening to access the mirrors adjustments

An opening is necessary on the side for mirrors adjustments

Bio-Shield


Euratom TORE SUPRA

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Infrared CamerasPixels or Bits per Chip

1,00E+02

1,00E+03

1,00E+04

1,00E+05

1,00E+06

1,00E+07

1,00E+08

1,00E+09

1,00E+10

1970 1975 1980 1985 1990 1995 2000 2005 2010

Years

DRAM

PtSi

HgCdTe

InSb

THERMO-SOFRADIR

128x128

640x480

320x256

1024x1024

1280x1024 ?

Expected F-number on IR sensor :

1200 x 1000 pixels array with 15µm pitch (y=18mm x 15mm), then: FN = y / SQGE = 3.3

Maximum Resolution :

If one inject the “point size” 1pt = . FN ( @ 55% ensquared energy) it comes (resolution = SQGE / ):

- For IR : Resolution @3µm = 1800pts Resolution @5µm = 1080pts

- For hollow Visible : Resolution @400nm = 3375pts Resolution @700nm = 1928pts


Euratom TORE SUPRA

17/22

Spatial resolution and wall covering

r (m)

z (m

) median in median

out

top

divertor out

divertor in

Sampling : poloidal section = 150 points

reproduced every 1 ~ 60000 points

main chamber view: (, )

r (cm)

(radian)

EQ#01, 03, 09, 12

/2

inner wall

outer wall

outer wall

(rad

ian)

top

Good Coverage of the first wall > 80%

Outer wall completely covered (r 9 mm)

Half inner wall is viewed with : good resolution.

Small areas not seen : top part and divertor region

Divertor


Euratom TORE SUPRA

18/22

Endoscope

LFS injection

HFS injection

R

L

Endoscope

LFS injection

HFS injection

Endoscope

LFS injection

HFS injection

R

L

The respective locations of the pellet tracks and endoscopes from a top view.

Pellet viewing

2 LFS injections

3 HFS injections

P6 track

P18 track

P12 track

P6 track

P12 track


Euratom TORE SUPRA

19/22

Port plug EQ#01

#01 LEFT

#01 DIVERTOR

#01 RIGHT

P18

P18P6

Same views for #03, #09 and #12

Conclusion:

Good for Pellet tracking


Euratom TORE SUPRA

20/22

DEVELOPMENTSI. Wide band Visible and Infrared antireflection coating for lenses

Simplified architecture

Reduction of Optical and Mechanical tolerances

Large increase of the Visible performances (but not the IR)

II. Test the auto-adaptative shifting relay (solution more reliable than active method) :

Relative movement of the machine respectively to the bio-shield,

Can accommodate the ITER on-axis translation (45mm) and the transverse directions (5mm)

III. Optical generic line choice and optimisation

Actually not fully designed missing elements / information

Broadband coating ?

Number of beam-splitters ?

IV. A mechanical design should be done when points I to III will be achieved

V. Any type of cooled infrared camera (3µm – 5 µm) is sensitive to magnetic field


Euratom TORE SUPRA

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Points to BE ADRESSED

1) New optical calculations Use Up-to-Date DATA (diagnostics, pupils, AR coating, etc…)

Remove off-Axis (8° between Optical Axis and Blind Spot)

2) Mechanical update to take into account new optical design

3) Design a test-stand (how to qualify the IR endoscopes)


Euratom TORE SUPRA

22/22

CONCLUSIONSTORE-SUPRA FEED-BACK and ARC-DETECTION with IR Thermography

ITER Architecture design of a GENERIC Optical and Mechanical Line

CLASHES : Some identified Have to be solved

COVERAGE and SPATIAL RESOLUTION : have been estimated Good

Is-it adequate for :

- IR-Thermography ? YES

- Visible Spectroscopy : - D ? YES

- W ? NO

- Be ? To be checked

- Runaways (10-50 MeV with detection limit of 1 kA) ? YES

- Pellets Injections (#06, #12 and #18) ? YES

- Replacing IR-Divertor thermography ? NO


Euratom TORE SUPRA

23/22

Thank you for your attention

d.guilhemiter ir/vis diagnostic -- april 4th 2006 -- cadarache euratom 1/22 iter wide-angle viewing...

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