Reunion Scientifique 05/04/2006 Centre de Recherches en Physique des Plasmas 1 of 12 Barbora...

Barbora Gulejova Reunion Scientifique 05/04/2006

Centre de Recherches en Physique des Plasmas

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Some key results from SOL H-mode characterisation

Barbora Gulejová, Richard Pitts, Roland Behn, Jan Horáček

OUTLINE

* Experiments - motivation* Comparison of data from old and new shots * Analysis of data from target langmuir probes



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AIM: repetition of #26730 modeled by SOLPS- new data required from : LPs RCP IR

laser beam

26730-old31832-new

RCP

Egde TS

LP

LP

+ SOLPS



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Upstream profiles- ne and Teedge TS + RCP + SOLPS

Old data #26730 TS

RCP

New data #3183x TS oldTS new

RCP oldRCP new

Te



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Te - upstream profile edge TS + RCP + SOLPS

New + oldexp.data

+

SOLPS



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ne - upstream profile edge TS + RCP + SOLPS

Old data #26730

ne

TS old

RCP old

New data #3183xTS oldTS new

RCP oldRCP new

RCP data x corr.factor ~ 0.5

-account for increased Aproj of RCP due to ρL(i)



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ne - upstream profile edge TS + RCP + SOLPS

New + oldexp.data

+

SOLPS



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ELM-Time evolution of jsat at outer target

coavelm from LP=4

*

*

*

*

*

t [s]

# 31832 , V= -100 V => Jsat mode

r-rsep [m] outer target

*

*

*

Jsat [A.cm-2]

Pre-ELM

ELM

Post-ELM



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Outer target div.leg sweeping #31839 (jsat)

vs fix outer div.leg #31832 (jsat) #31839 – target sweep => each probe gives part of jsat profile

ELM - phase

between ELMs

t [s]

Jsat [A.cm-2] LP=3

Time R(probe)-R(strike point)

Jsat target profile from envelopes of jsat in

certain times(between or during elm)



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Sweep vs Fixed target legJsat outer target profiles

Between ELMs ELMs

3

Fixed target leg #31832

88

7

7

6

6

55

4

4

3

Fixed target leg #31832

S w e e p # 31839

S w e e p # 31839

Strike point Strike point



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J0 profiles : V=0 mode #31836Inner and outer target

Thermoelectric currents flowInner target Outer target

negative J0

positive J0

3

4

5

6

7

8

47

48

49

50

51

52

53

54

55

LP LP

47

55

3 8



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J0 profiles : V=0 mode #31836inner and outer target balance

t [ms] from D t [ms] from D

Coh.averaged elm

Jo [kA] Jo [kA] normalised

Jo outer

Jo outer

Jo inner

Jo inner



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Thank you for attention



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Perpendicular heat fluxIR SOLPS

SOLPS



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Target profiles – Jsat Langmuir probes

# 31832 , V= -100 V => jsat modeCoherently averaged elms

Inner target Outer target

SOLSOL

PRF

PRF

t [s] t [s]

3

4

5

6

7

8

44

45

46

47

48

49

50

51

52

Reunion Scientifique 05/04/2006 Centre de Recherches en Physique des Plasmas 1 of 12 Barbora...

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Transcript of Reunion Scientifique 05/04/2006 Centre de Recherches en Physique des Plasmas 1 of 12 Barbora...