Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp 1 SIW Diagnostic Upgrades for Material Migration studies with ILW M Stamp and K-D.Zastrow, S Brezinsek, T.

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

SIW Diagnostic Upgrades for Material Migration studies with ILW

M Stamp

and

K-D.Zastrow, S Brezinsek, T Elevant, R.Barnsley, I.H.Coffey, K.D.Lawson,

A.G.Meigs, M.O’Mullane

• Details of upgrades and diagnostic coverage• Actual progress • Summary

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

• KT1 (vis) upgrade for inner wall poloidal source profile

• KT3 upgrade for complete outer divertor source profile

• KS8 upgrade for inboard/outboard determination (Zeeman splitting)

• KS3 upgrade improves our ‘horizontal’ and divertor spectroscopy

• KL1 (vis) will give useful inner and outer wall source information

• KL11 will give useful inner and outer divertor source information

• KL7 may give useful (fast camera) source information

• KT4, 7 visible views into divertor

• Coupled to PM-tubes, Czerny-Turner Spectrometers, EOS, COS

• Lots of new optical fibres (Fibreware, Si-Si, NA=0.2) already installed

Diagnostic coverage

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

Visible Diagnostic coverage

KL7

Influxes (sources)Carbon KS3 KT3 KT1(vis) KS8 KL1 KL11

Inner wall profileouter wall profile

Outer Div. completeInner Div.horizontal

vertical

Beryllium KS3 KT3 KT1(vis) KS8 KL1 KL11

Inner wall profileouter wall profile

Outer Div. completeInner Div.horizontal

vertical

Tungsten KS3 KT3 KT1(vis) KS8 KL1 KL11

Inner wall profileouter wall profile

Outer Div. completeInner Div.horizontal

vertical

present upgraded

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

New Systems in Spectrometer Room (SR)

• KSRC (new High Throughput spectrometer + Andor CCD camera), like KS3A

• KSRD (new 1-m Czerny-Turner spectrometer + Andor CCD camera), like KS3B

• KSRE (EOS – Echelle spectrometer with Andor CCD camera)

• KSRF,G,H,J,K,L,M,N (COS – compact spectrometers)

• KSRP (0.3-m Czerny-Turner spectrometer + JW CCD camera/PM-tubes)

• 24 PA’s (polychromator assemblies) Each PA is single fibre input, beamsplitters

and 4 interference filters to 4 PM-tubes to CODAS UXD7 (8-channel, 16-bit,

200kHz recording). 4 UXD7 available for campaign C27.

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

Measured PA-01 throughputs

(PA 01, Ch3, IFU)/REF

-0,10

0,00

0,10

0,20

0,30

0,40

0,50

0,60

463,50 464,00 464,50 465,00 465,50 466,00 466,50

(PA 01, Ch1, IFU)/REF

-0,10

0,00

0,10

0,20

0,30

0,40

0,50

0,60

654,00 654,50 655,00 655,50 656,00 656,50 657,00 657,50 658,00

(PA 01, Ch2, IFU)/REF

-0,10

-0,05

0,00

0,05

0,10

0,15

0,20

0,25

0,30

0,35

0,40

399,00 399,50 400,00 400,50 401,00 401,50 402,00 402,50 403,00

(PA 01, Ch4, IFU)/REF

-0,10

0,00

0,10

0,20

0,30

0,40

0,50

0,60

526,00 526,50 527,00 527,50 528,00 528,50

W I

C III Be II

D-α

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

KS3 narrow Divertor views

• 600m fibres

• 10 fibres across inner div

• 10 fibres across outer div

• New transmission fibres

installed

• For C27: Inner div fibres

connected through to

Spectrometer Room

• Connect to PA’s,

spectrometers

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

KS3 horizontal (bunker) l-o-s

• 400m fibre

• Small angle to radial

• L-o-s impacts side of 7B

inner poloidal limiter (will

be beryllium; wall tiles W-

coated CFC)

• Optical redesign was

planned; nothing done

yet

• Fibre to COS

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

KS8 l-o-s

• 600m fibres

• 3 x 3 array

• IWGL 7D planned to be W-coated CFC

• Wall tiles also W-coated CFC

• Fibres to EOS, COS

• Only 2 fibres working at the moment

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

Coverage extended to 360mm of outer divertor(was 150mm).

No need to move mirrors; Fixed alignment

Inner divertor vignetted by upper vertical port

New back-illuminated CCD camera for better UV sensitivity

KT3D upgrade (PL: A Meigs)

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

Restricted geometry – visible system added to VUV mirrors

Utilises KT1 oscillating mirror (scanning mirror) to achieve poloidal scan

Light collected by external telescope

In Spectrometer Room, light sent to: COS PA 0.3m Czerny-Turner

KT1 visible (PL: K Lawson)

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

KT7 - Single steerable l-o-s3 spectrometers; 2x SPRED (KT2), 1x SOXMOS grazing incidence

KT4 (grazing incidence) relocated to JID already (horizontal view)

Visible light collected byexternal telescope (fibres already in place)

In Spectrometer Room, light sent to: COS

KT4, KT7 visible (PL: I Coffey)

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

New periscope on Oct.1b LLGT

Divertor image split and sent to four cameras with filter wheels

KL11 periscope (PL: A Huber)

EndoscopeVisible Region(inside circle)

Picture from KL11 PMP (A Huber)

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Joint TFE-SEWG meeting, JET, 08/07/09 M Stamp

• Great improvements to wall components observed

Ready for commissioning and data collection in C27:

KS8 fibre to EOSKS3 inner divertor array to PA, 1-m spectrometer, HTS

Hopefully also some COS channels with KS3, KS8 and KT7 fibres (and maybe KT4 visible fibre)

The rest are planned for after Shutdown: KT3 upgradeKT1 visibleKL11 periscopeKS8 full array of fibresKS3 outer divertor fibre array

Summary