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JT-60SA Research Plan and Research Activities M. Yoshida
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JAEA
< JT-60SA Research Plan>
The ‘JT-60SA Research Plan’ summarizes research
objectives and strategy in JT-60SA experiments
covering all the major research fields contributing
to ITER and DEMO. The document consists offollowing chapters (= research fields) after
introduction (Chap. 1) [1].
Chap. 2: Research Strategy
Chap. 3: Operation Regime Development
Chap. 4: MHD Stability and Control
Chap. 5: Transport and Confinement
Chap. 6: High Energy Particle Behavior
Chap. 7: Pedestal and Edge Characteristics
Chap. 8: Divertor, SOL and PMI
Chap. 9: Fusion EngineeringChap. 10: Theoretical models and simulation codes
The research plan has been discussed in thefusion communities in Japan and Europe to deepenand sharpen the research strategy of JT-60SA.
Research items for critical issues in ITER andDEMO that should be solved in JT-60SA areproposed from over than 300 colleagues in JA andEU.
The purpose of discussing the JT-60SA
Research Plan is to mature the Research Plan itself
and to encourage fusion studies for JT-60SA, ITERand DEMO.
< Structure and Status>
At present, the EU and JA Integrated Project Teamof the Satellite Tokamak Project, EFDA and Fusion
Energy Forum Japan are collaborating as JT-60SA
Research Unit for development of the research plan
(Fig. 1). A total of 332 scientists are joining theresearch plan activity; 145 in JA (73 JAEA, 72
JA-Universities from 14 institutes), 182 in EU (10countries, 23 institutes) and 5 in the Project Team.
The JA and EU Technical Responsible Officers(TROs) lead the discussion on the research plan andrelated collaborative works in their research fields(Fig. 2). Proposals and comments from JA and EU
are, respectively organized by JA and EU TROs.

Japan Fusion
Community
FusionEnergyForumofJapan

Satellite Tokamak ProjectSteering
EUJapanCommittee
Project Committee
JAHomeTeam(JAEA)

ProjectTeam

EU FusionCommunity

EFDAEU
HomeTeam(F4E)

ResearchCoordination
Meeting

JT-60SA Research Unit

JT-60SA Research PlanNow
JA Home Team(v.1): 2009 May

JA Community(v.2): 2010, Jan(v.2.1): 2011, Feb.

JA&EU(v.3): 2011, Dec.

revised(v.3.1): 2013 

EU communityEFDA)
EU/JA Collaboration 

Fig.1 Structure and progress of broad discussion
on the JT-60SA Research Plan in EU and JA.
JAEA TROs

JA University

EU TROs

Y. KamadaY. Takase(Tokyo-U)

D. Borba(EFDA)

T. Suzuki

K. Nagasaki(Kyoto-U)

E. Joffrin(CEA)

G. Matsunaga

M. Furukawa(Tottori-U)

T. Bolzonella(RFX)

M. Yoshida

K. Tanaka(NIFS)

M. Romanelli(CCFE)

K. Shinohara

M. Osakabe(NIFS)

P. Lauber(IPP)

H. Urano

T. Morisaki(NIFS)

M. Beurskens(CCFE)

Chapter 8:
Divertor, SOL and PMI

T. Nakano

M. Sakamoto M. Wischmeier(Tsukuba-U)(IPP)

Chapter 9:
Fusion Engineering

M. Enoeda
S. Sakurai

A. Sagara(NIFS)

C. Day(KIT)

Chapter 10:Theoretical models andsimulation codes

N. Hayashi

A. Fukuyama(Kyoto-U)

G. Giruzzi(CEA)

JT-60SA Research Plan
organization

Y. KamadaG. Giruzzi(CEA)

JT-60SA Research Plan
coodination

M. Yoshida

G. Giruzzi(CEA)

Chapter 2:
Research Strategy
Chapter 3:
Operation Regime
Development
Chapter 4:
MHD Stability andControl
Chapter 5:
Transport andConfinement
Chapter 6:
High Energy Particle
Behavior
Chapter 7:
Pedestal and Edge
Characteristics

Fig. 2 EU and JA Technical Responsible
Officers (TROs) for JT-60SA Research Plan.

The JA and EU TROs discuss proposals from eachside and add the approval contents in the chapters.
The Research Coordination Meetings (RCM)with the members of the JT-60SA Research Unit,
including the Technical Responsible Officers(TROs) of the JT-60SA Research Plan, are held at
the JAEA Naka Fusion Institute. The meetings aremainly organized in two parts. One is a review andrevision of the JT-60SA Research Plan and theother is information exchange on scientific research
activities: results from collaborative works on
JT-60SA, current observations in present tokamaks,
ITER and DEMO requests. The RCM placesemphasis on discussion and information exchange
not only between the JA and EU TROs in eachchapter but over the chapters in order to realize
fruitful and efficient work. The 1st and 2nd meetings
were held in October 2011 and May 2013. We will
have the 3rd meeting in May 2014.
The JT-60SA Research Plan ver. 3.0 was
published as the first JA-EU collaboration version
on 22th December 2011. Many proposals from EU
were added: hybrid scenario, option of tungsten
divertor, mitigation of MHD instabilities, particle
transport and fueling and so on. The revised version
ver. 3.1 will be completed around the end of 2013.
<Research Activities>
The base of the JT-60SA research plan (ver. 3.0)
was made as mentioned above. The next step is tospecify the research proposal, for example target
plasmas, experimental conditions, actuators,diagnostics, etc.
For this purpose, substantial progress has been
made in developing some simulation codes andvalidating transport models through the JA and EU,
and JA-University and JAEA collaborations. Also
designs of heating and pumping systems arediscussed to optimize the spec. Feasibility studies
of some diagnostics are conducted in both JA andEU. The main results were summarized andreported in the international conferences; the EPSconference (4 papers), the EC-17 conference (1paper), and the IAEA Fusion Energy Conference (3papers), Toki conference (1 paper) in 2012.
<Future Plan>
The JT-60SA Research Plan will be updated until
the fist plasma considering the ITER research Plan,
DEMO issues and schedule, results in the presentmachines. We will continue to develop the researchplan by specifying the proposed research items
using simulation codes and models. And then, theresearch items will be prioritized using the results(Fig. 3).
In 2013, various collaborative studies onJT-60SA are proposed and conducted: code andmodel validations, simulations, feasibility studies ofdiagnostics, heatings and pumping. It is expectedthat more and more scientists are joining “thestudies on JT-60SA” with their specialities. The
results will realize fruitful experiments in JT-60SAand generate important message to ITER andDEMO.

JT-60SA Research Plan development
Experiments in JT-60SA 
priority
2012~ (we are here)
Specify the research proposals• code and models,• operation scenarios,• experimental regimes,• empirical scaling,• heating and diagnostic needs,• analysis method, etc.

ITER Research Plan
hardware status

“Studies on JT-60SA”
-> summarized in paper-> contribution toITER and DEMONew research items are also added

~2011 (ver. 3.0)
Base of the JT-60SA Research Plan, valuable proposals from EU and JA.Fig. 3 Steps of the JT-60SA Research Plan toward experiments.
[1] JT-60SA Research Plan version 3.0 can be downloaded fromEnglish: http://www.jt60sa.org/b/index_nav_3.htm?n3/operation.htm
Japanese: http://www-jt60.naka.jaea.go.jp/jt60/html/res_plan_jt60sa.html