DESIGN OF INFRARED THERMOGRAPHY DIAGNOSTICS FOR THE … · 2016. 5. 5. · [1 ‐5µm] optimized @...

JAN. 2015

DESIGN OF INFRAREDTHERMOGRAPHY DIAGNOSTICSFOR THE WEST PROJECT

X. Courtois, MH. Aumeunier, Ph. Moreau, C. Balorin, H. Roche, M. Jouve, JM Travere, F. Micolon, C. Begat, M. HouryIRFM

1st IAEA Technical Meeting on Fusion Data Processing, Validation and Analysis Nice, 1st - 3rd of June 2015

Introduction

IR views objectives & location

Design & performances

Cameras and signal processing

Conclusion

OUTLINE

Introduction




Conclusion

| PAGE 3IR diagnostic for WEST project

THE WEST PROJECTA MAJOR UPGRADE OF TORE SUPRA

WEST + Tore Supra supra conductive magnets and actively cooled Plasma Facing Components = capabilities of long pulse operation in a full metallic environment,

high fluency (10 MW/m² steady state), H mode

=> Tore Supra is a unique facility as test bed for ITER W Divertor technology

carbon Limiter (2012) X-point, tungsten Divertor (2016)

WEST (Tungsten (W) Environment for Steady State Tokamak) project:

Aims to transform TORE SUPRA configuration

Carbon Tungsten

OUTLINE

Introduction




Conclusion


Equatorial portWide Angle Tangentialview

Bumper (W/CFC)

Lower divertor (full W) Baffle (W/Cu)

Antennae protection (W/CFC)

Upper divertor (W/Cu)

Upper port protection (W/Cu)

Outer wall (SS)

Inner wall (SS)

Endoscope optic front end

Standarddivertor view

Antennae view

folded spherical mirror

Niche

High resolution view

Objectives: Measure the surface temperature of Plasma Facing Components (PFC) In order to ensure their integrity and provide data for physics

IR VIEWS & MONITORED COMPONENTS


LH C3

LH C4

ICRH Q4

ICRH Q2ICRH Q1

7 Divertor Standard Views 100% divertor surface (with overlap)

7 endoscopes located in upper ports

Objectives: RT protection of the divertor Physics studies :

• Plasma Wall Interactions• PFC behavior (dust deposition, ageing)• ...

Spatial resolution


1 Wide Angle tangential view (equatorial port)=> temperature monitoring of upper divertor,

upper port protections, a bumper

LH C3

LH C4

ICRH Q4

ICRH Q2ICRH Q1

sas

5 Antennas views3 ICRH & 2 LHCD => for RT protectionSpatial resolution Study gaps and leading edges=> Redundancy with the standard viewsSpatial resolution 14 IR views in total

IR VIEWS OBJECTIVES & LOCATION (2/2)

OUTLINE

Introduction




Conclusion


UPPER PORT ENDOSCOPE OVERALL DESCRIPTION

Optical tube 100 mm 3 optical lines

large FOV, water cooled

HeadOptic front end+ Heat load

IR Cameras

Machine Flange

Niche- Folded mirror- cooling plate

NEW !

NEW !

NEW !

NEW

NEW


IR Wavelength

Band

Expected range of Temperature

(ε=0,2)

Time resolution

Pixel Projection

(512x640 pix)

Expected resolution with real lenses

@ 95% true temp.

Standard Divertor view (x7)DESIGN COMPLETED

Antenna view via mirror (x5)DESIGN COMPLETED

High Resolution Divertor viewDESIGN ONGOING

Wide Angle Tangential viewDESIGN IN PROGRESS

OPTICAL DESIGN AND PERFORMANCES

[1 ‐ 5µm]optimized @ 1.7 µm 300°C - 3200°C

50 Hz full frameMulti Integration Time(high dyn. T° range)

2 mm 6 mm @1.7µm24 mm @3.7µm

[0.6 ‐ 5µm]optimized @ 1.7 µm 250°C - 3200°C

250 Hz full frame1 adaptive IT

(reduced T° range)0.7 mm 10 mm NA (high depth of field)

[1 ‐ 5µm]optimized @ 1.7 µm 200°C - 3200°C

50 Hz full frameMulti Integration Time

(high dynamicT° range)

2.8 mm 8 mm @1.7µm12 mm @3.7µm


STANDARD DIVERTOR VIEW (2 X 48° FOV)

STD DVT LEFT VIEW LEFT VIEWRIGHT VIEW

Optical simulation:

Left and right views uses 2 optical lines Optically combination on one detector frame

SPEOS CAAV5 © CEA


STANDARD DIVERTOR VIEW OPTICAL DESIGN

~ 2000 mm

28 lenses (ZnSe, ZnS_Broad, Silicon, CAF2)2 prisms4 mirrors2 tight sapphire windows

camera

Status : Optical and Opto‐mechanical design completed Call for tender for Manufacturing in progress


ANTENNA VIEW SIMULATION

SPEOS CAAV5 ©CEA

Monte Carlo Ray tracing photonic simulation


ANTENNA VIEW OPTICAL DESIGN

~ 2200 mm

Status : Optical and Opto‐mechanical design completed Call for tender for Manufacturing in progress Mirror: 2 prototypes under manufacturing

(Molybdenum & SS)

Antenna

tight window and deflecting mirror

head optics

relay lenses

camera lens

tight window

32 lenses (CAF2, Sapphire, AMTIR1, ZnS_Broad)2 mirrors2 tight sapphire windows

watercooled

plate

Molybdenum or SSspherical mirror

Radius 250mm

Folded Mirror


HIGH RES. DIVERTOR VIEW (20° FOV)

The HR view uses the third optical line

LEFT VIEWRIGHT VIEW

HR VIEW

Optical simulation

Status : Design in progress

SPEOS CAAV5 © CEA

512 pixels

640 pixels ≈ 430 mm

Strike points


Simpler design (more space available): 2 mirrors in the vacuum vessel + tight window + camera lens

Camera + lens Tight window(sapphire)

Status : Optical design completed Opto‐mechanical and Mechanical design in progress

Optical head

spherical mirror

Pupil hole 3mm

plan mirror

TANGENTIAL VIEW PRELIMINARY DESIGN


IN‐SITU TEST : IR REFERENCE SOURCES

Rugged & vacuum resistant 5 W900°C @ emissivity = 0.8

Alumina

3.5 mmNi filament

3V

IR sources located on antennas and on divertor views:

=> reference hot spot check camera good working adjust masks of Region Of Interest

IR sources

Example of location on LH antenna

OUTLINE

Introduction




Conclusion


Wall Monitoring SystemTmax , ROI Alarm + Arc detection

+ Reflection assessment

PX

Ie/ P

CIe

exte

nder 3 x 64 MB/s

Raw DL + Temperature + ROI data

3 FPGA boardsAcquisition + RT processing

Optical Transceiver

Camera Link

GPIO

Optical Transceiver

Cameras

Cam. Link

Optical fibre

WEST database + IR server

RT Works IR data

(lossless compression)

Acquisition PC>500 GB Local data storage

(+screen in Control Room)

RS232GPIO

Optic fibre Ethernet 64MB/s x3 IR luminance video stream

+ Tmax & alarm / Region Of InterestC

hron

o bo

ard Copper link

Other Diag. data

IR a

cqui

sitio

n U

nit

Wal

l Mon

itorin

g sy

stem

Toka

mak

WE

ST

power supply

PXI Express (5 identical units)

RS232

Data capture (Cameras)

RT basic data processing & Acquisition system

GLOBAL DATA PROCESSING ARCHITECTURE

RT Monitoring and interfaces with external systems


HOME‐MADE IR CAMERAS

IRFM experience in camera assembling for harsh environment (B +T°) :

On the shelf InSb detector• spectral range : 1,5µm – 5,0µm• 640x512 pixels, Pitch : 15µm• 250 Hz acquisition rate @ full frame• Camera Link video format• Multi Integration Time (up to 6 IT)

IRFM Design• Thermalized filter• Soft iron magnetic shielding• Rugged power supply• Water cooling control• Optical Camera Link transceivers

Detector procurement in progress Camera design done

Status:

Bi‐spectral camera, HgCdTe 3.5 & 4.5 m 640x512 pix Fast camera, InSb 1‐5 m 640x512 350Hz

Others available cameras:

12 home-made camerasCustomised features, affordable cost


FPGA BOARD“CENTRAL” HARDWARE COMPONENT

Functions:Camera basic functions:Detector local board controlData calibration & corrections (Bad Pixel Replacement, NUC,...) RT Multi Integration-Time processing (up to 6 IT)

Data acquisition and storage on PC (PXIe bus) Real time data processing:Region Of Interest processing:

Temperature threshold alarm -> Interlock system hard outputHot spot detection,Spatial and temporal filteringRT Data throughput to WMS (Ethernet)

Under procurement Code development (VHDL) in progress

Status:

Reuse of former developments on similar FPGA boards : Monitore Project (IRREEL diag) : algorithms for thermal events smart detection JET Protection Inner Wall project: algorithms for RT monitoring (ROI, filtering,...) Home‐made bi‐spectral camera : algorithms for calibration, NUC, adaptive IT, acquisition


Multi-diagnostics analysis for High level Machine protection

Discharge data analysis to optimize next discharge

Physics parameters(λq, Prad, etc.)

Plasma parameters : Magnetic equilibrium, Ip

scenario compatibility with PFCs operational limits ?

Before discharge

During discharge After discharge

PFC material, optical properties & operational limits

(max surface temperature)

Diagnostics features

WEST Database

M. Travere et al.,1st EPS Conference on Plasma Diagnostics, Frascati, April 2015

Full integrated simulation from the plasma source to the measured temperature

WALL MONITORING SYSTEMDISCHARGE LEARNING / OPTIMIZATION PROCESS

Diag data

(IR)

Knowledge for scenario construction & operational limits

OUTLINE

Introduction




Conclusion


CONCLUSION

o The WEST upgrade of Tore Supra requires new diagnostics for PFCs protection

o 4 different IR views are developed : standard and high resolution divertor views, antennas views, and 1 wide angle tangential view

o The developments are in progress : optical and opto‐mechanical systems, IR cameras, acquisition and RT processing

o A novel system (WMS) is proposed for high level machine protection and discharge control

THANK YOU

FOR YOUR ATTENTION

DESIGN OF INFRARED THERMOGRAPHY DIAGNOSTICS FOR THE … · 2016. 5. 5. · [1 ‐5µm] optimized @...

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