合同サブクラスタ会合
2012. 7.24	
筑波大学	

JT-60SA Research Plan
Toward v3.1- Divertor, SOL and PWI -T. Nakano (Japan Atomic Energy Agency)
M. Sakamoto (University of Tsukuba)JT-60SA(super advanced) 計画2

3

JT-60SA Research Plan v3.0

検討代表者
JAEA	

検討代表者
大学等 	

全体計画	

鎌田 裕	

高瀬 雄一
（東大）	

運転領域開発	鈴木 隆博	

長崎 百伸
（京大）	

MHD安定性と制御	

松永 剛	

古川 勝（東大）	

輸送と閉じ込め	

吉田麻衣子	

田中 謙治
（NIFS)	

高エネルギー粒子挙動	篠原 孝司	

長壁 正樹
(NIFS)	

ペデスタル及び周辺プラズマ特性	

浦野 創	

森崎 友宏
(NIFS)	

ダイバータ、SOL、プ
ラズマ・材料相互作 仲野 友英	
用	坂本 瑞樹（筑波大）	

分野	モデリング・シミュレーション	

林 伸彦	

福山 淳
（京大）	炉工学(ブランケット・材料・統合技術等）	

榎枝 幹男(JAEA)
櫻井 真治(JAEA)	

相良 明男(NIFS)	

Chapter 8. Divertor, SOL and PWI
8-1. Integration of high-confinement coreplasmas with highly-radiative divertor
plasmas for steady-state operation
8-2. Detached divertor study
8-3. Radiative divertor study
8-4. Particle and power balance study
8-5. Impurity generation and transport
8-6. Wall conditioning
8-7. Material probe
8-8. Post-mortem tile analysis
8-9. Metal divertor and first wall

4

Structure of the research plan
Peak Heat flux / PCF	
5 MW/m2 / W	DEMO	Mission: 	

10 MW/m2 / W	
8-1.Long-pulse high-β, high-density
and high-radiative plasma	

ITER	
15 MW/m2 / C	Elements: 	

Integrate	JT-60SA	High β	Core/Ped	
8-2 Divertor
detachment	

8-3 Radiative
divertor	

8-4.Fueling/ exhaustl	

V-shaped
corner
…

Ar/Ne
seed
…	

PelletAjustable
Pump
…

8-5.
Impurity	
C/Wtransport…	

8-6. Wallconditioning	Inter-shotcleaning…	

8-7~9.
PWI	
Retention
Erosion
Deposition…

High neutral compression predictedin the V-shaped corners

3x1020m-3	
3x1020m-3	
High neutral density in the V-shaped corner is predicted bySOLDOR simulation for the case with Ip of 5.5 MA, Pheat of 41
MW, Γgasof 1.5x1022/s and Spump of 50 m3/s.	

60% radiation in the divertor predicted

PradIn =6.2 MW
7 MWm-3	

Pradtotal =23 MW

Pradtotal / PheatSOL =0.62

Pradout =5.5 MW
7 MWm-3	

High radiation in both inner and outer divertors is predicted

Heat flux lower than 10 MW/m2 predicted

775 105	10MW/m2 x 100s	
Total heat flux	

1.5 10760-0.25

25	Outer

7Separatrix	

2 10qt_ed

qt_ed

Heat flux ( MWm-2 )	

Qdpl_o_R1002W18

qt_ed
qt_id
qt_recqt_radqt_ntl1.5 1015	

1 1010	

Qdpl_i_R1002W18

Separatrix	

Inner2 1020	

7

qt_ed
qt_id
qt_recqt_radqt_ntlOperational range of watercooled C monoblocks:
15MW/m2 x 100s	

1 10 7

Total heat flux	`	5 10 6

20	 15	
-0.2

-0.15

10	-0.1

5	-0.05

0	0

0
0.05
-0.05

-5	-5	

00	

5	0.050.1
0.15
10	15	

15	

r_odp

Distance from separatrix ( cm )r_idp

Detachment in both inner and outer divertors is predicted⇒ Highly radiative divertor operation with detachment isessential in the SA full performance discharges.

0.20.25
20	

リサーチプランVer.3.0への改訂	
In support of ITER and DEMO, low heat flux regime (10 MW/m2 for
ITER and 5 MW/m2 for DEMO) will be explored with the PFCs fully
covered with metal, after achieving the integrated long-pulse high-b
operation with the carbon monoblock divertor.	

Metal

Possible plan, toward full coverage	
• Phased increase of coverage:	

1.) Upper outer target

WW2.) whole outer target

3.) inner & outer target

4.) full coverageWWW

Optional plans of changeover ofPFCs to metal ones	

Optimistically, PFC change over takes 0.5 y by human hands, or 1.5 y by remote handing.	

Aims in 2012~

12TV meeting	l~2011• The base of the JT-60SA research plan was completed. (ver 3.0)l2012~• Progress specific estimations for developing the JT-60SA research planusing EU-JA codes and experimental results in present machines.
That is “Study on JT-60SA”; code validation/verification, operation/experimental regimes, heating, diagnostics, analysis method ,etc.
=> These activities will contribute to ITER and DEMO as well as SA.
• Continue to propose a new or revised research items.
• Generate many papers/talks in 2012 such as EPS, IAEA, EC17, Toki andJSPF.
• A minor change of the SARP will be made as necessary (=>ver 3.1).

13

Schedule for 2012

TV meeting	

AprilEU
EU TROs’ meeting	May 7-10

EC-17 (1 paper)	

June 4-8

EFDA meeting	June 5EU-JA TROs’ 2012 kick-off meeting (remote)	
EPS meeting (4 papers),
satellite meeting	An introductory report on SARP
( ~20 pages) for Journal of JSPF	

July 2-6
July 31JAAug.	
Sep.	
Oct. 8-13	

IAEA conference (3 papers)	

Nov.19-22	

Toki conference (** papers)	

Nov. 27-30 	
TBD	
Jan.~Feb.	
Feb.~Mar.	

JSPF annual meeting (** papers)	
2nd RCM at Naka 	
Finalization of the SARP v3.1
(draft at end-Jan. -> review -> publication at end-Feb.)	
4th JA-TROs' meeting	Updating Plan for Chap.8 (DSOLPWI) in 2012-13

14TV meeting	• Scenario development in a metal wall
Present evaluation is only for C-wall⇒ nAr/ni is scanned with nC/ni at 2% .
Plan: similar evaluation in a metal wall-2( MWm )Power from core to SOL:
37 MW

1033 MW29 MW25 MW

519-3( 10 m )Electron density

Peak heat flux

15(a)Outer divertor
0Power from core to SOL:
237 MW1(b)Outer mid-plane SOL

0
0.0

0.5

1.0
1.5
nAr / ni ( % )

2.0

2.5

• Detailed evaluation of activation
Man accessibility is uncertain afterIntegrated Research Phase I, where
Present C->Metal changeover isplanned.
Plan: update neutron fluence
evaluation based on the current
research plan.

Long term plan( possibly for v.4):• Comparison of pumping efficiency
between EU and JA code
The divertor and cryopanel
geometry will be provided to EU.
• Parameter survey with cooling ratevalidated by IMPMC
Present cooling rate based oncolonal model will be compared withthat calculated with IMPMC in
JT-60SA conditions.

Plans for 2012 JT-60SA related
activities in EU
G. Giruzzia),
M. Beurskensb), T. Bolzonellac), D. Borbad), C. Daye), E. Joffrina),
P. Lauberf), R. Neuf), F. Orsittog) , M. Romanellib), C. Sozzih)
JT-60SA EU Research Unita) CEA/Cadarache, b) CCFE/Culham, c) Consorzio RFX/Padova, d) EFDA/Garching,e) KIT/Karlsruhe, f) IPP/Garching, g) ENEA/Frascati, h) IFP/Milano

EFDA JT-60SA Meeting, Frascati

G. Giruzzi

5/06/201215

2012 EFDA Workprogramme:table of resources
Tasks

manpower(ppy)

travelcoordination

0.2

1 EU + 1 JA-EU
coord. meeting

follow-up of Research Plan revision (TROs)

1

1 EU + 1 JA-EU
coord. meetingmodelling2

1-2 months inJapanworking group on JT-60SA data system, analysis &validation tools

1

1 EU + 1 JA-EU
meetingexperiments and data analysis on EU machines insupport of JT-60SA1for participation inexperiments

evaluation / optimization of ECRH launcher

0.5

assessment of selected diagnostic systems

0.5

assessment of JT-60SA divertor pumping system

0.5

Total

6.7
EFDA JT-60SA Meeting, Frascati

G. Giruzzi

to be evaluated
5/06/201216

EFDA Workprogramme 2012 :specific subjects• Evaluation / optimization of ECRH launcher performancesØ extensive beam-tracing for the present launcher configurationØ comparison with physics requirements. Sensitivity studiesØ performance optimization analysis• Assessment of selected diagnostic systems
Ø current profile measurement diagnostics(MSE, polarimetry, integration of equilibrium reconstruction)
Ø Thomson scattering system• Assessment of JT-60SA divertor pumping systemØ use of state-of-the-art EU codes for the divertor pumping system designØ possible optimization

EFDA JT-60SA Meeting, Frascati

G. Giruzzi

5/06/201217

EFDA Workprogramme 2012 :coordination structure• Overall coordination and follow-up of Research Plan revision, managed by
the same structure (Coordinator + TROs)
Ø the JT-60SA EU Research Unit becomes a permanent EFDA structureØ follow-up of RP revision: background work consisting in corrections, improvements,extensions of the Research PlanØ coordination of collaboration activities connected with the physics and operation ofJT-60SA
Ø activity supervised by the ITER Physics Department of EFDA

• Changes in the EU Research Unit with respect to 2011:Ø Chap. 8 (Divertor): M. Wischmeier replaces R. Neu

EFDA JT-60SA Meeting, Frascati

G. Giruzzi

5/06/201218