ism tc itpa april2011 - general atomics filet&c itpa meeting, ism modelling activity on current...

1I. Voitsekhovitch for ISM group. T&C ITPA meeting, 4-5 April 2011, San-Diego

ISM

modellin

g a

cti

vit

y o

n c

urr

ent

ram

p

up

Pre

sente

d b

y I VO

ITSEK

HO

VIT

CH

on b

ehalf o

f IS

M g

roup

Pre

sente

d b

y I VO

ITSEK

HO

VIT

CH

on b

ehalf o

f IS

M g

roup

Pre

sente

d b

y I VO

ITSEK

HO

VIT

CH

on b

ehalf o

f IS

M g

roup

Pre

sente

d b

y I VO

ITSEK

HO

VIT

CH

on b

ehalf o

f IS

M g

roup

TF Leader : G. Falchetto

Deputies: R. Coelho, D. Coster

ISM Leader: X. Litaudon

ISM Deputy Leader: I. Voitsekhovitch

EFDA CSU Contact Person: D. Kalupin

T&C ITPA group meeting, 4-6 April 2011


Outlin

e

�IS

M g

roup &

acti

vit

y: genera

l in

form

ati

on

ISM

gro

up &

acti

vit

y: genera

l in

form

ati

on

ISM

gro

up &

acti

vit

y: genera

l in

form

ati

on

ISM

gro

up &

acti

vit

y: genera

l in

form

ati

on

�V

alidati

on o

f tr

ansport

models

for

curr

ent

ram

p

Validati

on o

f tr

ansport

models

for

curr

ent

ram

p

Validati

on o

f tr

ansport

models

for

curr

ent

ram

p

Validati

on o

f tr

ansport

models

for

curr

ent

ram

p

up p

lasm

as

up p

lasm

as

up p

lasm

as

up p

lasm

as

�C

urr

ent diffu

sio

n a

nd

Curr

ent diffu

sio

n a

nd

Curr

ent diffu

sio

n a

nd

Curr

ent diffu

sio

n a

nd li lililisim

ula

tions

sim

ula

tions

sim

ula

tions

sim

ula

tions

�Pro

jecti

on t

o ITER

Pro

jecti

on t

o ITER

Pro

jecti

on t

o ITER

Pro

jecti

on t

o ITER


�C

reate

dC

reate

dC

reate

dC

reate

din

2007 a

s ITM

in

2007 a

s ITM

in

2007 a

s ITM

in

2007 a

s ITM

cro

ss

cro

ss

cro

ss

cro

ss- ---p

roje

ct

pro

ject

pro

ject

pro

ject.

. . . Sta

tus

Sta

tus

Sta

tus

Sta

tus

of

of

of

ofIT

M

ITM

IT

M

ITM

pro

ject

pro

ject

pro

ject

pro

ject

sin

ce

sin

ce

sin

ce

sin

ce

2010

2010

2010

2010

�R

esourc

es

Resourc

es

Resourc

es

Resourc

es

in 2

010/2

011:

in 2

010/2

011:

in 2

010/2

011:

in 2

010/2

011:

- ---47 p

art

icip

ants

, 6.8

6 P

PY

(basic

47 p

art

icip

ants

, 6.8

6 P

PY

(basic

47 p

art

icip

ants

, 6.8

6 P

PY

(basic

47 p

art

icip

ants

, 6.8

6 P

PY

(basic

and

and

and

and

pri

ori

typri

ori

typri

ori

typri

ori

tysupport

)support

)support

)support

)

- ---C

CFE, C

EA, EN

EA

, C

CFE, C

EA, EN

EA

, C

CFE, C

EA, EN

EA

, C

CFE, C

EA, EN

EA

, IP

PIP

PIP

PIP

P- ---G

arc

hin

gG

arc

hin

gG

arc

hin

gG

arc

hin

g, , , , IS

TIS

TIS

TIS

T- ---P

ort

ugal

Port

ugal

Port

ugal

Port

ugal, F

OM

, FZJ, R

FX

, , FO

M, FZJ, R

FX

, , FO

M, FZJ, R

FX

, , FO

M, FZJ, R

FX

, O

AW

, V

R, EFD

AO

AW

, V

R, EFD

AO

AW

, V

R, EFD

AO

AW

, V

R, EFD

A- ---C

SU

CSU

CSU

CSU

- ---coord

inate

dcoord

inate

dcoord

inate

dcoord

inate

dby X

. Lit

audon (Leader)

by X

. Lit

audon (Leader)

by X

. Lit

audon (Leader)

by X

. Lit

audon (Leader)

and

and

and

and

I. V

oit

sekhovit

ch

I. V

oit

sekhovit

ch

I. V

oit

sekhovit

ch

I. V

oit

sekhovit

ch

( (((Deputy

Deputy

Deputy

Deputy

) )))

�M

eeti

ngs: 3

Meeti

ngs: 3

Meeti

ngs: 3

Meeti

ngs: 3 w

ork

ing

work

ing

work

ing

work

ing

sessio

ns

sessio

ns

sessio

ns

sessio

ns p

er

per

per

per

year

year

year

year

+

+

+

+ r

egula

rre

gula

rre

gula

rre

gula

rre

mote

rem

ote

rem

ote

rem

ote

meeti

ngs (~

meeti

ngs (~

meeti

ngs (~

meeti

ngs (~every

every

every

every

two

two

two

two

weeks

weeks

weeks

weeks).

).

).

).

�Suit

es

Suit

es

Suit

es

Suit

es o

fof

of

ofcodes

codes

codes

codes involv

ed

involv

ed

involv

ed

involv

ed: : : : A

STRA

, C

RO

NO

S, JETTO

, TRA

NSP,

ASTRA

, C

RO

NO

S, JETTO

, TRA

NSP,

ASTRA

, C

RO

NO

S, JETTO

, TRA

NSP,

ASTRA

, C

RO

NO

S, JETTO

, TRA

NSP,

SA

NC

O, SO

UL 1

D, ED

GE2D, EM

C3

SA

NC

O, SO

UL 1

D, ED

GE2D, EM

C3

SA

NC

O, SO

UL 1

D, ED

GE2D, EM

C3

SA

NC

O, SO

UL 1

D, ED

GE2D, EM

C3- ---E

IREN

E, M

ISH

KA

, M

ETIS

, EIR

EN

E, M

ISH

KA

, M

ETIS

, EIR

EN

E, M

ISH

KA

, M

ETIS

, EIR

EN

E, M

ISH

KA

, M

ETIS

, H

ELIO

S.

HELIO

S.

HELIO

S.

HELIO

S.

ETS (

ETS (

ETS (

ETS (Euro

pean

Euro

pean

Euro

pean

Euro

pean

Tokam

ak

Tokam

ak

Tokam

ak

Tokam

ak S

olv

er

Solv

er

Solv

er

Solv

er)

) ) ) at

at

at

at

the

the

the

the

user

test phase.

user

test phase.

user

test phase.

user

test phase.

�C

lose c

ollabora

tion

Clo

se c

ollabora

tion

Clo

se c

ollabora

tion

Clo

se c

ollabora

tion w

ith

wit

hw

ith

wit

hIO

, IT

PA

gro

ups (T&

C

IO, IT

PA

gro

ups (T&

C

IO, IT

PA

gro

ups (T&

C

IO, IT

PA

gro

ups (T&

C a

nd

and

and

and

IOS)

IOS)

IOS)

IOS) and

and

and

and

experi

menta

lists

experi

menta

lists

experi

menta

lists

experi

menta

lists

(JET, A

UG

, Tore

Supra

)(J

ET, A

UG

, Tore

Supra

)(J

ET, A

UG

, Tore

Supra

)(J

ET, A

UG

, Tore

Supra

)

ISM

: genera

lin

form

ati

on


Scie

ntific

acti

vitie

s:

�A

cti

vit

yA

cti

vit

yA

cti

vit

yA

cti

vit

y- ---1

: S

upport

Validation o

f th

e E

TS

1 : S

upport

Validation o

f th

e E

TS

1 : S

upport

Validation o

f th

e E

TS

1 : S

upport

Validation o

f th

e E

TS

�A

cti

vit

yA

cti

vit

yA

cti

vit

yA

cti

vit

y- ---2

:

2 :

2 :

2 : D

evelo

pin

gD

evelo

pin

gD

evelo

pin

gD

evelo

pin

gand

and

and

and v

alidating

validating

validating

validating

pla

sm

a

pla

sm

a

pla

sm

a

pla

sm

a

scenari

os

scenari

os

scenari

os

scenari

os: sim

ula

tions for

: sim

ula

tions for

: sim

ula

tions for

: sim

ula

tions for

exis

ting

exis

ting

exis

ting

exis

ting

devic

es

devic

es

devic

es

devic

es

�A

cti

vit

yA

cti

vit

yA

cti

vit

yA

cti

vit

y- ---3

: S

upport

to

3 : S

upport

to

3 : S

upport

to

3 : S

upport

to p

redic

tive

pre

dic

tive

pre

dic

tive

pre

dic

tive

scenari

o

scenari

o

scenari

o

scenari

o

modellin

gm

odellin

gm

odellin

gm

odellin

gfo

r fu

ture

fo

r fu

ture

fo

r fu

ture

fo

r fu

ture

devic

es

devic

es

devic

es

devic

es

(ITER

, J

T60SA,

(ITER

, J

T60SA,

(ITER

, J

T60SA,

(ITER

, J

T60SA,

etc

etc

etc

etc

) )))

The m

odellin

g o

f curr

ent

ram

p u

p p

hase is

addre

ssed w

ithin

all t

hre

e a

cti

vit

ies


AC

T1: benchm

ark

ing o

f th

e E

TS c

ode a

gain

st

ASTR

A/C

RO

NO

S/J

ETTO

/SA

NC

O for

JET O

H

curr

ent

ram

p u

p d

ischarg

e (#71827)

�ETS d

evelo

pm

ent:

ETS d

evelo

pm

ent:

ETS d

evelo

pm

ent:

ETS d

evelo

pm

ent:

- ---in

put data

: scripts

convert

ing

the J

ET P

PFs, C

RO

NO

S &

TR

AN

SP o

utp

utin

to the input

CPO

for

ETS

-2 K

eple

rW

Fs

for

equilib

rium

+

curr

ent diffu

sio

n+Te+Ti

-Bohm

-gyro

Bohm

& C

oppi-Tang

models

are

im

ple

mente

d in W

Fs

-over 20 H

&C

D c

odes p

ort

ed o

n

the G

ate

way, 11 K

eple

racto

rs

delivere

d, th

eir

im

ple

menta

tion

in W

Fs

is in p

rogre

ss

�Exam

ple

s o

f ETS b

enchm

ark

ing

Exam

ple

s o

f ETS b

enchm

ark

ing

Exam

ple

s o

f ETS b

enchm

ark

ing

Exam

ple

s o

f ETS b

enchm

ark

ing

for

#71827:

for

#71827:

for

#71827:

for

#71827:

-ste

ady

sta

te e

quilib

rium

and

curr

entdiffu

sio

n a

fter100 s

of

sim

ula

tion t

ime

obta

ined

with

measure

dpla

sm

a p

rofile

s (ne,

Te, Ti)

-im

purity

sim

ula

tions w

ith A

DAS

cro

ss-s

ections: benchm

ark

ing o

f ra

dia

tive

pow

er in

ETS &

SA

NCO

Para

llel

curr

ent

density,

MA

/m2

Safe

ty facto

r

ETS

ETS

ETS

ETS

ASTRA

ASTRA

ASTRA

ASTRA

JETTO

JETTO

JETTO

JETTO

D. K

alu

pin

, et al, G

enera

l IT

M m

eeting, Septe

mber 2010

I. Ivanova-S

tanik

, IT

M C

ode C

am

p, M

arc

h 2

011

0,0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

1,0

200

300

400

500

600

700

Shot 71827, Run 50, ∆ ∆∆∆ = 10-3s for SANCO Seq. 235

Radiative Power, W/m-3

Norm

alize radius

ETS/IMPURITY/ADAS, t = 1s

ETS/IMPURITY/ADAS, t = 1.5s

SANCO, t= 1s


AC

T2: sim

ula

tions o

fcurr

ent

ram

p

up

on e

xis

ting

devic

es

�M

ulti

Multi

Multi

Multi- ---m

achin

e d

ata

base for

modellin

g: A

UG

, JET, Tore

m

achin

e d

ata

base for

modellin

g: A

UG

, JET, Tore

m

achin

e d

ata

base for

modellin

g: A

UG

, JET, Tore

m

achin

e d

ata

base for

modellin

g: A

UG

, JET, Tore

Supra

. M

odellin

g for D

III

Supra

. M

odellin

g for D

III

Supra

. M

odellin

g for D

III

Supra

. M

odellin

g for D

III- ---D &

CM

OD

in c

ollabora

tion w

ith

D &

CM

OD

in c

ollabora

tion w

ith

D &

CM

OD

in c

ollabora

tion w

ith

D &

CM

OD

in c

ollabora

tion w

ith

T&

C ITPA

gro

up is in p

rogre

ss.

T&

C ITPA

gro

up is in p

rogre

ss.

T&

C ITPA

gro

up is in p

rogre

ss.

T&

C ITPA

gro

up is in p

rogre

ss.

�O

pera

tional space:

Opera

tional space:

Opera

tional space:

Opera

tional space:

- ---dIp

l/dt

dIp

l/dt

dIp

l/dt

dIp

l/dt

= 0

.19

= 0

.19

= 0

.19

= 0

.19 - ---

0.3

6 (JET)

0.3

6 (JET)

0.3

6 (JET)

0.3

6 (JET) - --->

0.7

(A

UG

) > 0

.7 (A

UG

) > 0

.7 (A

UG

) > 0

.7 (A

UG

) - --->

0.9

(TS) M

A/s

> 0

.9 (TS) M

A/s

> 0

.9 (TS) M

A/s

> 0

.9 (TS) M

A/s

- ---q95 =

3

q95 =

3

q95 =

3

q95 =

3 – –––

5 (TS)

5 (TS)

5 (TS)

5 (TS)

- ---n/n

GW

n/n

GW

n/n

GW

n/n

GW

= 0

.2

= 0

.2

= 0

.2

= 0

.2 - ---

0.4

0.4

0.4

0.4

- ---P PPP

aux

aux

aux

aux= 0

.6 (TS)

= 0

.6 (TS)

= 0

.6 (TS)

= 0

.6 (TS) - ---10 M

W: IC

RH

, N

BI, L

HC

D, EC

CD

10 M

W: IC

RH

, N

BI, L

HC

D, EC

CD

10 M

W: IC

RH

, N

BI, L

HC

D, EC

CD

10 M

W: IC

RH

, N

BI, L

HC

D, EC

CD

�Teste

d m

odels

: Teste

d m

odels

: Teste

d m

odels

: Teste

d m

odels

:

- ---em

piric

al scaling

em

piric

al scaling

em

piric

al scaling

em

piric

al scaling- ---b

ased m

odel w

ith p

rescri

bed r

adia

l based m

odel w

ith p

rescri

bed r

adia

l based m

odel w

ith p

rescri

bed r

adia

l based m

odel w

ith p

rescri

bed r

adia

l shape o

f shape o

f shape o

f shape o

f χ χχχe =

e =

e =

e =

χ χχχi used for th

e w

hole

pla

sm

a r

egio

n

i used for th

e w

hole

pla

sm

a r

egio

n

i used for th

e w

hole

pla

sm

a r

egio

n

i used for th

e w

hole

pla

sm

a r

egio

n

- ---sem

isem

isem

isem

i- ---em

piric

al m

odels

: em

piric

al m

odels

: em

piric

al m

odels

: em

piric

al m

odels

: B

ohm

Bohm

Bohm

Bohm

- ---gyro

Bohm

gyro

Bohm

gyro

Bohm

gyro

Bohm

and

and

and

and C

oppi

Coppi

Coppi

Coppi- ---Tang

Tang

Tang

Tang

used for

the w

hole

pla

sm

a r

egio

n

used for

the w

hole

pla

sm

a r

egio

n

used for

the w

hole

pla

sm

a r

egio

n

used for

the w

hole

pla

sm

a r

egio

n

- ---th

eory

theory

theory

theory

- ---based (G

LF23) used for

0

based (G

LF23) used for

0

based (G

LF23) used for

0

based (G

LF23) used for

0 ≤ ≤≤≤ρ ρρρ≤ ≤≤≤

0.8

0.8

0.8

0.8


Validati

on o

ftr

ansport

models

(I):

scaling

based, B

ohm

-gyro

Bohm

, G

LF23

F. Im

beaux e

t al, IAEA

2010,

subm

itte

d to N

ucl. F

usio

n

Te

keV

G.M

.D. H

ogew

eij e

t al, E

PS 2

010

JET low

densit

y O

H p

uls

e 7

1827:

nl=

10

19

m-3

, dI p

l/dt=

0.1

9 M

A/s 5 s

11 s

Tore

Supra

EC

CD

assis

ted

curr

ent ra

mp-u

p (co-E

CC

D

applied a

t ρ

= 0

.3) fr

om

0.5

s

(halfw

ay the Ip

ram

p u

p)


Validati

on o

ftr

ansport

models

(II):

scaling

based, B

ohm

-gyro

Bohm

, C

oppi-Tang,

GLF23

AU

G O

H s

hot. T

he p

lasm

a c

urr

ent is

ra

mped u

p to 0

.8 M

A in 0

.9 s

. Edge

radia

tion d

ue to im

purities

(wall

conditio

nnin

g) ->

edge

cooling

& low

Te

F. Im

beaux e

t al, IA

EA

2010,

subm

itte

d to N

ucl. F

usio

n

JET O

H s

hot: n

l=1.4

*10

19m

-3, dI p

l/dt=

0.1

9

MA

/s. O

rigin

al Bohm

-gyro

Bohm

model over-

pre

dic

ts T

e, accura

te p

redic

tion w

ith

χe=3.3χe_Bohm

-gyro

Bohm

.

Why this

result is d

iffe

rent w

ith 7

1827?

Data (symbols), sim

ulations with

χ χχχe=χ χχχe_B/gB(dashed curves)

and χ χχχe=3.3χ χχχe_B/gB (solid

curves)

I. V

oitsekhovitch e

t al, P

PCF 2

010


Diffe

rent

pla

sm

a c

ondit

ions in #

71827 a

s

com

pare

d to a

naly

sed d

ata

base o

f JET O

H

curr

ent

ram

p u

p d

ischarg

es

71827 0.19 1.05 0.13 2 2.9

-#71827: lo

w c

urr

ent ra

mp r

ate

, but

als

o low

ne, hig

h T

e a

nd late

r

saw

teeth

(aft

er 9 s

) ->

slo

w c

urr

ent

diffu

sio

n;

-curr

ent pro

file

evolu

tion is c

loser to

low

density #

72460 (slo

w c

urr

ent

penetr

ation a

nd late

r saw

teeth

-aft

er

6 s

)

Bohm

-gyro

Bohm

model pre

dic

tion:

-re

lati

vely

accura

te

at hig

h T

e/s

low

curr

ent diffu

sio

n:

#72460 (rm

s< 2

2%

),

#71827

-lo

w p

redic

tive

accura

cy a

t hig

her

ne, lo

wer

Te a

nd

faste

r curr

ent

diffu

sio

n

Para

mete

rs o

f sim

ula

ted d

ischarg

es

Bohm

-gyro

Bohm

pre

dic

tive a

ccura

cy o

bta

ined u

nder diffe

rent assum

ptions

10

I. Voitsekhovitch for ISM group. T&C ITPA meeting, 4-5 April 2011, San-Diego

ISM

–T&

C ITPA

collabora

tion: benchm

ark

ing

of C

oppi-Tang m

odel in

ASTR

A &

CO

RSIC

A for

DIII-D

dis

charg

e

Tom

Casper, Iri

na V

oitsekhovit

ch

ISM

WS N

ov 2

9 -

Dec. 3 2

010, C

ulh

am

DII

I-D

OH

curr

ent

ram

p u

p d

ischarg

e (136779)

Sqrt(torflux)

-over-estimated Te with original Coppi-Tang m

odel (as published in Jardinet al, Nucl.Fusion1993)

-different implementation of Coppi-Tang m

odel in ASTRA and CORSICA: original model in ASTRA,

additional multiplier 2.5 is used in CORSICA for OH and L-m

ode plasmas

-better agreement with data has been obtained in ASTRA simulations after introducing this

multiplier, but still there is an important deviation from m

easured Te1.4 s

0.7 s

Origin

al C

oppi-Tang

model (d

ashed), re-

norm

alised C

oppi-

Tang m

odel (s

olid),

data

(sym

bols

)

Origin

al C

oppi-Tang

model (d

ashed), re-

norm

alised b

y

facto

r 8 C

oppi-Tang

model (s

olid), d

ata

(sym

bols

)

JET O

H d

ischarg

e –

str

ong T

e o

vere

stim

ation w

ith

Coppi-Tang m

odel [V

oitsekhovitch e

t al PPC

F 2

010]

6 s

3 s

11


Validati

on o

f tr

ansport

models

-sum

mary

�Em

pir

ical scaling

Em

pir

ical scaling

Em

pir

ical scaling

Em

pir

ical scaling- ---b

ased m

odel:

based m

odel:

based m

odel:

based m

odel: t

he o

ptim

al agre

em

ent betw

een e

xperi

ment

the o

ptim

al agre

em

ent betw

een e

xperi

ment

the o

ptim

al agre

em

ent betw

een e

xperi

ment

the o

ptim

al agre

em

ent betw

een e

xperi

ment

and s

imula

tions is o

bta

ined u

sin

g e

ither H

96

and s

imula

tions is o

bta

ined u

sin

g e

ither H

96

and s

imula

tions is o

bta

ined u

sin

g e

ither H

96

and s

imula

tions is o

bta

ined u

sin

g e

ither H

96- ---L

= 0

.6 o

r H

IPB98 =

0.4

.L =

0.6

or

HIP

B98 =

0.4

.L =

0.6

or

HIP

B98 =

0.4

.L =

0.6

or

HIP

B98 =

0.4

.

�B

ohm

Bohm

Bohm

Bohm

- ---gyro

Bohm

gyro

Bohm

gyro

Bohm

gyro

Bohm

model:

model:

model:

model:

• •••O

H d

ischarg

es:

OH

dis

charg

es:

OH

dis

charg

es:

OH

dis

charg

es:

- ---good p

redic

tive c

apabilit

y for JET d

ischarg

es w

ith s

low

inw

ard

curr

ent diffu

sio

n

-over-pre

dic

ted T

e in J

ET d

ischarg

es w

ith fast

curr

ent

diffu

sio

n/low

q.

-under-pre

dic

ted T

e for

AU

G d

ischarg

e (la

rge e

dge radia

tion)

• •••auxilia

ry h

eati

ng: re

lati

vely

accura

te p

redic

tion (except off

auxilia

ry h

eati

ng: re

lati

vely

accura

te p

redic

tion (except off

auxilia

ry h

eati

ng: re

lati

vely

accura

te p

redic

tion (except off

auxilia

ry h

eati

ng: re

lati

vely

accura

te p

redic

tion (except off

- ---axis

JET

axis

JET

axis

JET

axis

JET

ICR

H d

ischarg

e)

ICR

H d

ischarg

e)

ICR

H d

ischarg

e)

ICR

H d

ischarg

e)

�G

LF23 m

odel applied a

t G

LF23 m

odel applied a

t G

LF23 m

odel applied a

t G

LF23 m

odel applied a

t ρ ρρρ≤ ≤≤≤

0.8

0.8

0.8

0.8

- ---0.8

50.8

50.8

50.8

5: :::clo

se t

o the

clo

se t

o the

clo

se t

o the

clo

se t

o the B

ohm

Bohm

Bohm

Bohm

- ---gyro

Bohm

gyro

Bohm

gyro

Bohm

gyro

Bohm

model

model

model

model

pre

dic

tion for a n

um

ber of cases. N

ot

applicable

near

the e

dge.

pre

dic

tion for a n

um

ber of cases. N

ot

applicable

near

the e

dge.

pre

dic

tion for a n

um

ber of cases. N

ot

applicable

near

the e

dge.

pre

dic

tion for a n

um

ber of cases. N

ot

applicable

near

the e

dge. L LLLess

ess

ess

ess

accura

te a

t hig

h N

BI pow

er.

accura

te a

t hig

h N

BI pow

er.

accura

te a

t hig

h N

BI pow

er.

accura

te a

t hig

h N

BI pow

er.

�Coppi-Tang m

odel: a

ccura

te p

redic

tion for

DII

I-D

, but

needs to b

e r

e-

norm

alised for m

atc

hin

g t

he J

ET d

ischarg

es a

t le

ast

within

31%

of rm

sdevia

tion:

-in

cre

ase b

y facto

r 8

is n

eeded for O

H p

lasm

as

-in

cre

ase b

y facto

r (4

.7-4

.9) is

needed for N

BI and IC

RH

heate

d d

ischarg

es

-bett

er

agre

em

ent w

ith d

ata

when facto

r 2.5

has b

een

intr

oduced, but sti

ll a

larg

er m

ult

iplier

is n

eeded for JET d

ischarg

es

12


Curr

ent

diffu

sio

n: is

it consis

tent

wit

h

neocla

ssic

al pre

dic

tions?

�I. J

enkin

s e

t al, E

PS 2

010:

I. J

enkin

s e

t al, E

PS 2

010:

I. J

enkin

s e

t al, E

PS 2

010:

I. J

enkin

s e

t al, E

PS 2

010:

earl

y M

SE m

easure

ments

earl

y M

SE m

easure

ments

earl

y M

SE m

easure

ments

earl

y M

SE m

easure

ments

(@

~1s) aft

er th

e b

reakdow

n a

t (@

~1s) aft

er th

e b

reakdow

n a

t (@

~1s) aft

er th

e b

reakdow

n a

t (@

~1s) aft

er th

e b

reakdow

n a

t JET A

T s

cenari

o: to

o fast

JET A

T s

cenari

o: to

o fast

JET A

T s

cenari

o: to

o fast

JET A

T s

cenari

o: to

o fast

reducti

on o

f q0

reducti

on o

f q0

reducti

on o

f q0

reducti

on o

f q0

�G

.M.D

. H

ogew

eij e

t al, E

PS

G.M

.D. H

ogew

eij e

t al, E

PS

G.M

.D. H

ogew

eij e

t al, E

PS

G.M

.D. H

ogew

eij e

t al, E

PS

2010, I. V

oit

sekhovit

ch e

t al

2010, I. V

oit

sekhovit

ch e

t al

2010, I. V

oit

sekhovit

ch e

t al

2010, I. V

oit

sekhovit

ch e

t al

PPC

F 2

010

PPC

F 2

010

PPC

F 2

010

PPC

F 2

010 – –––

too r

apid

to

o r

apid

to

o r

apid

to

o r

apid

re

ducti

on o

f q0 in J

ET ITER

reducti

on o

f q0 in J

ET ITER

reducti

on o

f q0 in J

ET ITER

reducti

on o

f q0 in J

ET ITER

- ---like d

ischarg

es w

ith fla

t like d

ischarg

es w

ith fla

t like d

ischarg

es w

ith fla

t like d

ischarg

es w

ith fla

t Zeff

Zeff

Zeff

Zeff

(Zeff

(Zeff

(Zeff

(Zeff≥ ≥≥≥2), b

ut

possib

le t

o m

atc

h

2), b

ut

possib

le t

o m

atc

h

2), b

ut

possib

le t

o m

atc

h

2), b

ut

possib

le t

o m

atc

h

q0 b

y p

layin

g w

ith

q0 b

y p

layin

g w

ith

q0 b

y p

layin

g w

ith

q0 b

y p

layin

g w

ith Z

eff

Zeff

Zeff

Zeff

pro

file

pro

file

pro

file

pro

file

�A

ccura

te N

CLA

SS p

redic

tion

Accura

te N

CLA

SS p

redic

tion

Accura

te N

CLA

SS p

redic

tion

Accura

te N

CLA

SS p

redic

tion

of q p

rofile

evolu

tion for

3 D

III

of q p

rofile

evolu

tion for

3 D

III

of q p

rofile

evolu

tion for

3 D

III

of q p

rofile

evolu

tion for

3 D

III- ---

D d

ischarg

es (

D d

ischarg

es (

D d

ischarg

es (

D d

ischarg

es (Zef

Zef

Zef

Zef≤ ≤≤≤

1.5

)1.5

)1.5

)1.5

)

I. J

enkin

s e

t al EPS 2

010

JET 7

2823 (LH

),

5s

I. V

oit

sekhovitch, A

STR

A s

imula

tions o

f

curr

ent diffu

sio

n for D

III-D

dis

charg

e

Rgeo

from

ON

ETW

O, m

atc

hed

pla

sm

a v

olu

me, data

Zeff

: 5->

3

13


li s

imula

tions: sensitiv

ity

to T

e p

rofile

li s

imula

tions

li s

imula

tions

li s

imula

tions

li s

imula

tions w

ith

wit

hw

ith

wit

hdiffe

rent

diffe

rent

diffe

rent

diffe

rent

transport

tr

ansport

tr

ansport

tr

ansport

models

models

models

models

: :::

�em

piric

al tr

ansport

models

(Bohm

-gyro

Bohm

and s

caling b

ased m

odels

):

the

lidynam

ics is p

redic

ted w

ithin

+/-

0.1

5 a

ccura

cy

�Coppi-Tang o

r G

LF23 m

odels

(applied u

p t

o the L

CFS): o

vere

stim

ate

or

undere

stim

ate

the inte

rnal in

ducta

nce b

eyond this

accura

cy (m

ore

than

+/-

0.2

dis

cre

pancy in s

om

e c

ases)

JET O

H s

hot

71827: pla

sm

a c

urr

entis

ram

ped

up

to 2

.5 M

A in 1

0 s

F. Im

beaux e

t F. Im

beaux e

t F. Im

beaux e

t F. Im

beaux e

t al

al

al

al, IA

EA

2010,

, IA

EA

2010,

, IA

EA

2010,

, IA

EA

2010, subm

itte

dsubm

itte

dsubm

itte

dsubm

itte

dto

Nucl. F

usio

nto

Nucl. F

usio

nto

Nucl. F

usio

nto

Nucl. F

usio

n

14


li s

imula

tions: sensitiv

ity

to q

atth

eedge

�C

ircula

rC

ircula

rC

ircula

rC

ircula

rpla

sm

as

pla

sm

as

pla

sm

as

pla

sm

as w

ith

with

with

with

pre

scri

bed

pre

scri

bed

pre

scri

bed

pre

scri

bed

q

q

q

q a

nd

and

and

and

pre

ssure

pro

file

s, li

pre

ssure

pro

file

s, li

pre

ssure

pro

file

s, li

pre

ssure

pro

file

s, li

is isisissim

ula

ted

sim

ula

ted

sim

ula

ted

sim

ula

ted

�li

li

li

li is isisis

str

ongly

str

ongly

str

ongly

str

ongly

sensit

ive t

o q

sensit

ive t

o q

sensit

ive t

o q

sensit

ive t

o q

outs

ide

outs

ide

outs

ide

outs

ideρ ρρρ≥ ≥≥≥

0.9

50.9

50.9

50.9

5, , , , w

hile

while

while

while

even

even

even

even

sig

nific

ant

sig

nific

ant

sig

nific

ant

sig

nific

ant

changes in

changes in

changes in

changes in t

he

the

the

the

centr

al part

centr

al part

centr

al part

centr

al part

of

of

of

ofq qqq- ---p

rofile

pro

file

pro

file

pro

file

are

are

are

are

not

not

not

not

necessari

lynecessari

lynecessari

lynecessari

lyvis

ible

in li

vis

ible

in li

vis

ible

in li

vis

ible

in li

li(3

)=1.1

1 (solid), 1

.26 (dashed)

li(3

)=1.2

48 (solid), 1

.263

(dashed)

J. H

obirk, pri

vate

com

munic

ation, IS

M W

S N

ovem

ber 29-D

ecem

ber 3 2

010

15


ACT3: pro

jections to ITER, sensit

ivity

to t

ransport

models

, saw

tooth

oscilla

tions a

nd

pla

sm

a d

ensity

I. Voitsekhovitch et al, PPCF 2010

GLF23, BgB

GLF23, BgB

Ti0

Te0

ECRH assisted current ramp up: scan in ECRH

power and power deposition at ne/nGW=0.5.

Sawtooth

mixing m

aintains q0 close to 1.

OH current ramp-up with ne/nGW=0.25: profiles at 100 s

(end of Ip

ramp-up), as calculated by 2 transport m

odels,

under different assumptions on Te(edge) and neprofile

shape. No sawtooth

mixing.

tim

e=80 s

tim

e=80 s

G.M.D. Hogeweij et al, EPS 2010

16


Work

in p

rogre

ss:

�M

odellin

g o

f curr

ent ra

mp

Modellin

g o

f curr

ent ra

mp

Modellin

g o

f curr

ent ra

mp

Modellin

g o

f curr

ent ra

mp

up for JET H

Sup for JET H

Sup for JET H

Sup for JET H

S

�O

pti

mis

ation o

f curr

ent

Opti

mis

ation o

f curr

ent

Opti

mis

ation o

f curr

ent

Opti

mis

ation o

f curr

ent

ram

p u

p for

ITER

HS

ram

p u

p for

ITER

HS

ram

p u

p for

ITER

HS

ram

p u

p for

ITER

HS

(G.M

.D. H

ogew

eij e

t al,

(G.M

.D. H

ogew

eij e

t al,

(G.M

.D. H

ogew

eij e

t al,

(G.M

.D. H

ogew

eij e

t al,

EPS 2

011): 1

2 M

A, off

EPS 2

011): 1

2 M

A, off

EPS 2

011): 1

2 M

A, off

EPS 2

011): 1

2 M

A, off

- ---axis

axis

axis

axis

LH

CD

or

EC

CD

LH

CD

or

EC

CD

LH

CD

or

EC

CD

LH

CD

or

EC

CD

�C

urr

ent

ram

p u

p

Curr

ent

ram

p u

p

Curr

ent

ram

p u

p

Curr

ent

ram

p u

p

sim

ula

tions for D

III

sim

ula

tions for D

III

sim

ula

tions for D

III

sim

ula

tions for D

III- ---D a

nd

D a

nd

D a

nd

D a

nd

com

pari

son w

ith J

ET

com

pari

son w

ith J

ET

com

pari

son w

ith J

ET

com

pari

son w

ith J

ET – –––

in

in

in

in

pre

para

tion for IO

S ITPA

pre

para

tion for IO

S ITPA

pre

para

tion for IO

S ITPA

pre

para

tion for IO

S ITPA

gro

up m

eeti

ng, A

pri

l 11

gro

up m

eeti

ng, A

pri

l 11

gro

up m

eeti

ng, A

pri

l 11

gro

up m

eeti

ng, A

pri

l 11- ---1

4

14

14

14

2011

2011

2011

2011

Safe

ty facto

r

40 s

80 s

G.M

.D.H

ogew

eij

et

al, E

PS 2

011

ECCD [M

A/m

2], U

PL 1

0 M

W, sta

rtin

g a

t 40 s

+ E

QL 1

0 M

W, sta

rtin

g a

t 75 s

ρ ρρρ

17


Publicati

ons a

nd p

resenta

tions

used in t

his

talk

:

1.

1.

1.

1.

G.M

.D. H

ogew

eij e

t al, E

PS 2

007

G.M

.D. H

ogew

eij e

t al, E

PS 2

007

G.M

.D. H

ogew

eij e

t al, E

PS 2

007

G.M

.D. H

ogew

eij e

t al, E

PS 2

007

2.

2.

2.

2.

V. Para

il e

t al,

V. Para

il e

t al,

V. Para

il e

t al,

V. Para

il e

t al, N

ucl

Nucl

Nucl

Nucl. F

usio

n 4

9 0

75030 2

009

. Fusio

n 4

9 0

75030 2

009

. Fusio

n 4

9 0

75030 2

009

. Fusio

n 4

9 0

75030 2

009

3.

3.

3.

3.

G.M

.D.

G.M

.D.

G.M

.D.

G.M

.D. H

ogew

eij, J. Citri

n, J. G

arc

ia e

t al, E

PS 2

010

Hogew

eij, J. Citri

n, J. G

arc

ia e

t al, E

PS 2

010

Hogew

eij, J. Citri

n, J. G

arc

ia e

t al, E

PS 2

010

Hogew

eij, J. Citri

n, J. G

arc

ia e

t al, E

PS 2

010

4.

4.

4.

4.

F. Im

beaux e

t al, 2

3rd

IA

EA F

usio

n E

nerg

y C

onfe

rence

F. Im

beaux e

t al, 2

3rd

IA

EA F

usio

n E

nerg

y C

onfe

rence

F. Im

beaux e

t al, 2

3rd

IA

EA F

usio

n E

nerg

y C

onfe

rence

F. Im

beaux e

t al, 2

3rd

IA

EA F

usio

n E

nerg

y C

onfe

rence

( (((ITR

/P1

ITR

/P1

ITR

/P1

ITR

/P1- ---2

020

20

20),

),

),

), D

aejo

nD

aejo

nD

aejo

nD

aejo

n, Republic o

f K

ore

a, O

cto

ber

10

, Republic o

f K

ore

a, O

cto

ber

10

, Republic o

f K

ore

a, O

cto

ber

10

, Republic o

f K

ore

a, O

cto

ber

10- ---1

6th

16th

16th

16th

2010, subm

itte

d t

o N

ucle

ar

Fusio

n2010, subm

itte

d t

o N

ucle

ar

Fusio

n2010, subm

itte

d t

o N

ucle

ar

Fusio

n2010, subm

itte

d t

o N

ucle

ar

Fusio

n

5. I. V

oit

sekhovit

ch e

t al, P

PC

F 5

2 1

05011 2

010

5. I. V

oit

sekhovit

ch e

t al, P

PC

F 5

2 1

05011 2

010

5. I. V

oit

sekhovit

ch e

t al, P

PC

F 5

2 1

05011 2

010

5. I. V

oit

sekhovit

ch e

t al, P

PC

F 5

2 1

05011 2

010

6. I. J

enkin

s e

t al, E

PS 2

010

6. I. J

enkin

s e

t al, E

PS 2

010

6. I. J

enkin

s e

t al, E

PS 2

010

6. I. J

enkin

s e

t al, E

PS 2

010

7. G

.M.D

. H

ogew

eij e

t al, ISM

work

ing s

essio

n, M

arc

h 7

7. G

.M.D

. H

ogew

eij e

t al, ISM

work

ing s

essio

n, M

arc

h 7

7. G

.M.D

. H

ogew

eij e

t al, ISM

work

ing s

essio

n, M

arc

h 7

7. G

.M.D

. H

ogew

eij e

t al, ISM

work

ing s

essio

n, M

arc

h 7

- ---11

11

11

11

2011,

2011,

2011,

2011, C

adara

che

Cadara

che

Cadara

che

Cadara

che, to

be p

resente

d a

t EPS 2

011

, to

be p

resente

d a

t EPS 2

011

, to

be p

resente

d a

t EPS 2

011

, to

be p

resente

d a

t EPS 2

011

8. T. C

asper, I. V

oit

sekhovit

ch, IS

M w

ork

ing s

essio

n,

8. T. C

asper, I. V

oit

sekhovit

ch, IS

M w

ork

ing s

essio

n,

8. T. C

asper, I. V

oit

sekhovit

ch, IS

M w

ork

ing s

essio

n,

8. T. C

asper, I. V

oit

sekhovit

ch, IS

M w

ork

ing s

essio

n,

Novem

ber 29

Novem

ber 29

Novem

ber 29

Novem

ber 29 - ---

Decem

ber

3 2

010, C

ulh

am

Decem

ber

3 2

010, C

ulh

am

Decem

ber

3 2

010, C

ulh

am

Decem

ber

3 2

010, C

ulh

am

ism tc itpa april2011 - general atomics filet&c itpa meeting, ism modelling activity on current...

Documents