Monday, July 12, 2021
JP

EU

Program - FY2021 LHD Research Forum

US
Presen + Q&A

JST CEST EDT

CDT

15:20 8:20
15:25 8:25

2:20
2:25

1:20 23:20 K. Ida
1:25 23:25 N. Tamura

PDT

15:30 8:30

2:30

15:40 8:40

Welcome address
Request from Organizer

NIFS
NIFS

5
5

1:30 23:30 K. Ida

NIFS

4+4

2:40

1:40 23:40 K. Nagaoka

NIFS

4+4

15:50 8:50

2:50

1:50 23:50 K. Mukai

NIFS

4+4

16:00 9:00

3:00

2:00

Nagoya Univ.

4+4･ MHD instability suppression by RMP field

Instability･ Observation of Landau damping･ Low field plasma experiment for energetic particle
confinement study･ Investigation of divertor detachment using
superimposed impurity seeding

S. Ito0:00 (proposed by

K. Watanabe(NIFS))
16:10 9:10

3:10

2:10

0:10 K. Nagasaki

Kyoto University

4+4･ Active Control of Energetic-Particle-Driven MHD
Instabilities by ECH/ECCD

K. Watanabe
16:20 9:20

3:20

2:20

0:20 (on behalf of

NIFS (Institute forAdvanced Fusion
and Physics
Education)

4+4･ Comparative experiments of Bootstrap current in the
1/new and plateau regime in LHD･ Demonstration of enhanced energy channeling fromenergetic ions to bulk ions via energetic-ion-driven
geodesic acoustic modes in reversed magnetic shear
plasmas of LHD

O. Mitarai)

16:30 9:30

3:30

2:30

0:30 K. Toi

Professor Emeritus
of NIFS

4+4

16:40 9:40

3:40

2:40

0:40 H. Nuga

NIFS

10 + 817:00 10:00 4:00

3:00

1:00 H. Nuga

NIFS

17:00 10:00 4:00

3:00

1:00 H. Nuga

NIFS

17:00 10:00 4:00

3:00

1:00

17:20 10:20 4:20

3:20

1:20 H. Matsuura

Kyushu University

4+4

17:30 10:30 4:30

3:30

1:30 S. Kobayashi

IAE， Kyoto Univ.

4+4

17:40 10:40 4:40

3:40

1:40 T. Yokoyama

The University of
Tokyo

4+4

17:50 10:50 4:50

3:50

1:50 H. Yamada

The University of
Tokyo

4+4

18:00 11:00 5:00

4:00

2:00 J. Jo

Korea Institute of
Fusion Energy

4+4

18:10 11:10 5:10

4:10

2:10 S. Sharapov

Culham ScienceCentre4+4

4+4･ EFFECT OF THE NBCD ON THE STABILITY OF
PRESSURE GRADIENT DRIVEN MODES ANDALFVEN MODES IN LHD HIGH BETA
OPERATIONS

4+4･ Experimental analysis of beta-driven stochastizationin the LHD helical divertor･ Experimental analysis of the non-linear Coulomb
collision effect･ Validation of neutral beam current drive in LHD fornumerical estimation･ Investigation of the effect of anisotropic plasmapressure on MHD equilibrium in the three-dimensional
magnetic configurationBreak

18:20 11:20 5:20

4:20

2:20 J. Varela

University Carlos III
Madrid

18:30 11:30 5:30

4:30

2:30 A. Knieps

Forschungszentru
m Juelich

18:40 11:40 5:40

4:40

2:40

Adjourn

1/8･ Observation of knock-on tail formation using DD
neutrons and 6LiD γ-rays･ Development of plasma initiation technique for low
magnetic field plasma experiments･ Prediction and avoidance of radiative collapse toachieve high-density plasma･ Prediction and maintenance of detached plasma by
data-driven approach･ Effect of phase-space distribution on Triton
confinement･ ECRH/ ECCD effects on energetic particle-driven
Alfven eigenmodes

Tuesday, July 13, 2021
EU

US

JST CEST EDT

JP

CDT

Program - FY2021 LHD Research Forum
Presen + Q&A

PDT

Instability

8:30

1:30 19:30 18:30 16:30 J. Lestz

University ofCalifornia， Irvine

4+4

8:40

1:40 19:40 18:40 16:40 W. Heidbrink

UC Irvine

7+6

8:55

1:55 19:55 18:55 16:55 W. Heidbrink

UC Irvine･ Connections between ion cyclotron range
instabilities in space, stellarator and tokamak plasmas･ Fast-ion transport in MHD-quiescent plasmas･ Excellent documentation of fast-ion transport byAlfven instabilities

8:55

1:55 19:55 18:55 16:55 M. Zarnstorff

PPPL

4+4

･ Confinement improvement and turbulence
suppression in high beta plasmas with impurity
powder injection.

9:05

2:05 20:05 19:05 17:05 K. Ogawa

NIFS

4+4

･ Energetic ion transport due to toroidal Alfven
eigenmode in deuterium plasma in LHD and HL2A/2M

9:15

2:15 20:15 19:15 17:15 H. Igami

NIFS

7+6

･ Observation of whistler frequency waves excited by
nonlinear wave-wave coupling during abrupt bursting
events9:30

2:30 20:30 19:30 17:30 H. Igami

NIFS

9:30

2:30 20:30 19:30 17:30 S. Kamio

NIFS

9:50

2:50 20:50 19:50 17:50 S. Kamio

NIFS

9:50

2:50 20:50 19:50 17:50 S. Kamio

NIFS

9:50

2:50 20:50 19:50 17:50･ OXB heating by 115.5GHz at the strongly Dopplershifted ECR in the SDC plasma･ Hydrogen and deuterium beam ion transport due to
10 + 8
toroidal Alfven eigenmode･ Investigation of ion heating mechanism during
EGAM excitation caused by fast ion･ Study of the fast ion confinement physics in helicaldeviceBreak

10:10 3:10 21:10 20:10 18:10 M. Kobayashi

NIFS

10:25 3:25 21:25 20:25 18:25 M. Kobayashi

NIFS

10:25 3:25 21:25 20:25 18:25 S. Ohdachi
10:40 3:40 21:40 20:40 18:40 S. Ohdachi

NIFS
NIFS

7+6

10:40 3:40 21:40 20:40 18:40 N. Kenmochi

NIFS

4+4

10:50 3:50 21:50 20:50 18:50 N. Tamura

NIFS

4+4

11:00 4:00 22:00 21:00 19:00 R. Yanai

NIFS

4+4

11:10 4:10 22:10 21:10 19:10 Y. Takemura

NIFS

10 + 8

11:30 4:30 22:30 21:30 19:30 Y. Takemura

NIFS

11:30 4:30 22:30 21:30 19:30 Y. Takemura

NIFS

7+6

･ High radiation fraction detachment with RMP
application･ Feedback control detachment with ECRH andimpurity gas puff
･ Corrupt mechanism of CDC events･ p-11B reaction using boron dropper･ Isotope mass effects on sustainment of e-ITB
plasma･ Study of plasma termination induced by different Z
impurities at different masses and its recovery byadding ECH･ Investigating EBW heating characteristics via X-B
mode conversion from high field side injection･ Relationship between plasma flow and transition to
MHD instability with collapse in high density LHD
plasmas･ Effect of MHD instability with different mode
structure on magnetic topology･ Sawtooth-like oscillation in high aspect ratio
configuration of LHD

Lunch

11:30 4:30 22:30 21:30 19:30

Instability
13:30 6:30

0:30 23:30 21:30 R. Seki

NIFS

4+4

13:40 6:40

0:40 23:40 21:40 S. Sangaroon

NIFS

4+4

13:50 6:50

0:50 23:50 21:50 S. Masuzaki

NIFS

4+4

14:00 7:00

1:00

0:00 22:00 T. Seki

NIFS

4+4

14:10 7:10

1:10

0:10 22:10 T. Tokuzawa

NIFS

4+4

14:20 7:20

1:20

0:20 22:20 T. Tsujimura

NIFS

4+4

14:30 7:30

1:30

0:30 22:30 Y. Yoshimura

NIFS

4+4

2/8

･ Measurement of neutron emission rate and fast ion
in ICRF 2nd deuteron heating.
･ Study of velocity distribution of neutral beam and ion
cyclotron range of frequency tail ions using thecompact neutron emission spectrometer･ Investigation of asymmetry of divertor particle andheat fluxes profiles･ Acceleration of NBI deuterium beam ions by ICRF
second harmonic heating･ Observation of spatial structure change in theplasma edge during L-H mode transition･ Observation of the parametric decay instability
excited by mode-converted vortex EC waves･ Generation of high energy electrons by 3rd harmonic
116GHz wave coupled with 2nd harmonic heating by
77GHz wave

Tuesday, July 13, 2021

Program - FY2021 LHD Research Forum

14:40 7:40

1:40

0:40 22:40 Y. Fujiwara

NIFS

4+4

14:50 7:50

1:50

0:50 22:50 Y. Suzuki

NIFS

7+6

15:05 8:05
15:05 8:05

2:05
2:05

1:05 23:05 Y. Suzuki
1:05 23:05 H. Thomsen

NIFS
IPP

4+4

15:15 8:15

2:15

1:15 23:15･ Effect of Electron Temperature on Fast-ion
Distribution with Fast-ion D alpha diagnostic･ Impacts of rational surface on L-H transition in highbeta plasma･ Study of topological bifurcation･ rotational transfor dependency of CDCs

Break
Spectroscopy

15:35 8:35

2:35

1:35 23:35 M. Goto

NIFS

15:50 8:50

2:50

1:50 23:50 M. Goto

NIFS

15:50 8:50

2:50

1:50 23:50 B. Li

Lanzhou University

4+4

16:00 9:00

3:00

2:00

0:00 F. Ding

ASIPP

4+4

16:10 9:10

3:10

2:10

0:10 V. Winters

Max-Planck-Institut
für Plasmaphysik

4+4

16:20 9:20

3:20

2:20

0:20 H. Yamaguchi

ISAS/JAXA

4+4

16:30 9:30

3:30

2:30

0:30 R. Sakamoto

NIFS

4+4

16:40 9:40

3:40

2:40

0:40 J. Romazanov

FZJ IEK-4

4+4

16:50 9:50

3:50

2:50

0:50

17:10 10:10 4:10

3:10

1:10 M. Kubkowska

IPPLM

4+4

17:20 10:20 4:20

3:20

1:20 N. Panadero

Ciemat4+4

17:30 10:30 4:30

3:30

1:30 R. Bussiahn

Max-Planck-Institut
für Plasmaphysik

4+4

17:40 10:40 4:40

3:40

1:40 S. Brezinsek

FZJ

7+6

17:55 10:55 4:55

3:55

1:55 S. Brezinsek

FZJ

17:55 10:55 4:55

3:55

1:55 T. Fornal

IPPLM

18:05 11:05 5:05

4:05

2:05

7+6

･ Doppler free spectroscopy for the neutral penetration
profile measurement･ Polarization spectroscopy for the study of anisotropy
in the electron velocity distribution function･ Search on magnetic induced electric dipole
transition using LHD･ The impact of divertor configuration on inward
impurity transport･ Ionization mean free path (Z) dependence of
impurity retention in the ergodic SOL of LHD･ Establishing atomic database of L-shell transitionsof the Fe-peak elements with LHD･ Dynamic behavior of hydrogen pellet ablation andhomogenization･ Carbon impurity erosion and transport analysis andmodelling with ERO2.0

Break

4+4

Adjourn

3/8･ Impurity transport study in LHD D/H plasmas using
VUV spectroscopy in experiment with TESPEL
injection･ Analysis of pellet injection in different plasma
scenarios for code validation･ Multi-tracer Impurity transport studies by TESPEL
injections into multi-ion plasmas･ Study of W erosion, transport, deposition andscreeing in LHD by emission spectroscopy on neutral
and low ionising W transitions･ Study of deuterium molecular band emission in
LHD: excited and ground state population as functionof divertor conditions･ Light impurity transport studies in D/H plasmas at
LHD using VUV spectroscopy.

Wednesday, July 14, 2021
EU

US

JST CEST EDT

JP

CDT

Program - FY2021 LHD Research Forum
Presen + Q&A

PDT

Spectroscopy

9:00

2:00 20:00 19:00 17:00 C. M. Muscatello

General Atomics

4+4

9:10

2:10 20:10 19:10 17:10 C. Suzuki

NIFS

4+4

9:20

2:20 20:20 19:20 17:20 F. Koike

Sophia University

4+4

9:30

2:30 20:30 19:30 17:30 H. Hara

NAOJ

4+4

9:40

2:40 20:40 19:40 17:40 A. Matsuyama

QST

4+4

9:50

2:50 20:50 19:50 17:50･ Diagnosis of fast ions produced by NNBI with FIDA
spectroscopy･ Experimental identification of spectral lines fromhighly charged heavy ions･ Precision spectral measurements of highly charged
rare earth ions and their data analysis with nonempirical MCDF-CI calculations･ Calibration of Solar EUV Spectrometers andValidation of Diagnostic Capability for Solar HighTemperature Plasmas by LHD Experiments･ Ablation of high Z (neon) and hydrogen cryogenicpellets and its implication to ITER DMS design

Break

10:10 3:10 21:10 20:10 18:10 T. Oishi

NIFS

4+4

･ Expansion of the observable charge state range oftungsten ions

10:20 3:20 21:20 20:20 18:20 I. Murakami

NIFS

4+4

･ Simultaneous multi-wavelength spectroscopies forvalidation on atomic data and spectroscopic
modellings for highly-charged ions

10:30 3:30 21:30 20:30 18:30 D. Kato

NIFS

7+6

10:45 3:45 21:45 20:45 18:45 D. Kato

NIFS

10:45 3:45 21:45 20:45 18:45 T. Kawate

NIFS

11:00 4:00 22:00 21:00 19:00 T. Kawate

NIFS

7+6

11:00 4:00 22:00 21:00 19:00 H. Igami

NIFS

4+4

11:10 4:10 22:10 21:10 19:10 H. Funaba

NIFS

4+4

11:20 4:20 22:20 21:20 19:20 Y. Fujiwara

NIFS

4+4

･ Observation of visible forbidden lines from higher
charge states of W highly charged ions･ Collection and assessment of the transition datarequired for the quantitative studies of heavy element
nucleosynthesis in neutron star mergers･ Study on Ion Distribution toward Low Magnetic-field
Operations･ relationship between energetic particles and MHD
instability･ Effect of the anisotropy of the electron velocity on the
excitation of low whistler frequency waves via thenonlinear wave-wave coupling from the lower hybrid
wave originated by high energy beam ions.
･ Diagnostics of relativistic electrons by Thomson
scattering in high electron temperature plasmas･ Expansion of FICXS database

Lunch

11:30 4:30 22:30 21:30 19:30

Spectroscopy
13:30 6:30

0:30 23:30 21:30 S. Masuzaki

NIFS

4+4

13:40 6:40
13:50 6:50
14:00 7:00

0:40 23:40 21:40 M. Zhao
0:50 23:50 21:50 Y. Kawamoto
1:00 0:00 22:00 S. Morita

NIFS
NIFS
NIFS

4+4
4+4
4+4

･ Sustainment of divertor detachment by using
feedback controlled impurity seeding･ Deuterium retention in damaged tungsten･ Evaluation Zeff in LHD･ Effect of magnetic islands on impurity transport

Turbulence
14:10 7:10

1:10

0:10 22:10 R. Yanai

NIFS

4+4

14:20 7:20

1:20

0:20 22:20 C. Moon

Kyushu Univ.

4+4

14:30 7:30

1:30

0:30 22:30 S. Inagaki

Kyushu Univ.

4+4

14:40 7:40

1:40

0:40 22:40 N. Kenmochi

NIFS

7+6

14:55 7:55

1:55

0:55 22:55 N. Kenmochi

NIFS

14:55 7:55

1:55

0:55 22:55

15:15 8:15

2:15

1:15 23:15 T. Kobayashi

NIFS

15:35 8:35

2:35

1:35 23:35 T. Kobayashi

NIFS

15:35 8:35

2:35

1:35 23:35 T. Kobayashi

NIFS･ Investigating ECH beam broadening by density
fluctuations･ Study of nonlinear interactions between multiplescale fluctuations in edge stochastic region of LHD
plasma.
･ Up-hill gradient particle transport induced byturbulence in the LHD･ Feedback control of ECH using edge AI system･ Study of turbulence pulse properties during theminor collapse events of e-ITB

Break
10 + 84/8･ Dependence of electron ITB threshold condition on
isotope mass･ Magnetically driven divertor limit-cycle oscillation･ Direct quantification of ion heat flux using radial
CXS view

Wednesday, July 14, 2021

Program - FY2021 LHD Research Forum･ Verification of the effect of magnetic field geometry
on zonal flow in 3D confined configuration･ Measurement of high-frequency harmonic plasma
4 + 4 density fluctuations with mode L-H mode transition
using beam emission spectroscopy･ Plasma behaviors at the boundary of the transition to
4+4
the High Ion Temperature discharge･ Investigation of Ti increase with high Z impurity in
4+4high Te/Ti condition･ Robustness assessment of methods to prevent an
13 + 10
impurity accumulation･ Study of the interaction between neoclassical andturbulent transport in terms of impurity transport･ Investigation of the detailed spatial structure of
impurity transport･ Effect of additional perturbations on the nonlocal
transport phenomenon

15:35 8:35

2:35

1:35 23:35 S. Nishimoto

Nagoya University

15:45 8:45

2:45

1:45 23:45 H. Wenqing

SOKENDAI

15:55 8:55

2:55

1:55 23:55 M. Yoshinuma

NIFS

16:05 9:05

3:05

2:05

0:05 H. Takahashi

NIFS

16:15 9:15

3:15

2:15

0:15 N. Tamura

NIFS

16:40 9:40

3:40

2:40

0:40 N. Tamura

NIFS

16:40 9:40

3:40

2:40

0:40 N. Tamura

NIFS

16:40 9:40

3:40

2:40

0:40 N. Tamura

NIFS

16:40 9:40

3:40

2:40

0:40

17:00 10:00 4:00

3:00

1:00 C. Hidalgo

Ciemat17:15 10:15 4:15

3:15

1:15 C. Hidalgo

Ciemat17:15 10:15 4:15

3:15

1:15 A. Alonso

CIEMAT

4+4

17:25 10:25 4:25

3:25

1:25 D. Carralero

CIEMAT

4+4

17:35 10:35 4:35

3:35

1:35 F. Nespoli

PPPL

4+4

17:45 10:45 4:45

3:45

1:45 M. Beurskens

Max-Planck-Institut
für Plasmaphysik

4+4

17:55 10:55 4:55

3:55

1:55

4+4

Break
7+6

Adjourn

5/8･ On the influence of Alfven Eigenmodes in radial
electric fields and transport in LHD･ On the physics of the density limit: turbulence
spreading and SOL width･ Degradation of confinement in LHD and its relation
to electromagnetic turbulence when approaching
reactor-relevant thermal and fast-particle betas.
･ Interstellarator characterization of core turbulence
during enhanced performance regimes･ Turbulence suppression and confinement
improvement with boron powder injection･ Ion turbulent transport and Ti clamping study inelectron-heated plasmas with varying degree ofneoclassical optimization in LHD compared to W7-X

Thursday, July 15, 2021
JP

EU

Program - FY2021 LHD Research Forum
Presen + Q&A

USJST CEST EDT CDT PDT Turbulence
9:00 2:00 20:00 19:00 17:00 K. Tanaka

13 + 10 ･ Overcome of Ti clumping by reducing turbulence

NIFS

9:25

2:25 20:25 19:25 17:25 K. Tanaka

NIFS

9:25
9:25

2:25 20:25 19:25 17:25 K. Tanaka
2:25 20:25 19:25 17:25 K. Tanaka

NIFS
NIFS

9:25
9:45

2:25 20:25 19:25 17:25 M. Nishiura
2:45 20:45 19:45 17:45 M. Nishiura

NIFS
NIFS

9:45

2:45 20:45 19:45 17:45 M. Nishiura

NIFS

9:45

2:45 20:45 19:45 17:45 M. Kobayashi

NIFS

9:55

2:55 20:55 19:55 17:55･ Configuration dependence of anomalous transport
from W7X and LHD comparison experiments･ Interaction between turbulence and fast ion･ Turbulence response in ITB formation
10 + 8 ･ Perpendicular injection of EC beam from 1.5UO･ Core and edge turbulence in modulated ECH･ 77, 154, and 300 GHz Collective Thomson
scattering (CTS) diagnostics for bulk and fast ion. Velocity and spatial profiles･ Effects of hydrogen isotope, edge magnetic field
4+4
structure and impurity on turbulence spreading
Break

10:15 3:15 21:15 20:15 18:15 T. Kinoshita

Kyushu university

4+4

10:25 3:25 21:25 20:25 18:25 I. Yamada

NIFS

4+4

10:35 3:35 21:35 20:35 18:35 H. Igami

NIFS

4+4

10:45 3:45 21:45 20:45 18:45 T. Tsujimura

NIFS

4+4

10:55 3:55 21:55 20:55 18:55 J. Cheng

Southwest
Jiaotong University

4+4

11:05 4:05 22:05 21:05 19:05 A. Shimizu

NIFS

7+6

11:20 4:20 22:20 21:20 19:20 A. Shimizu

NIFS

11:20 4:20 22:20 21:20 19:20 T. Tokuzawa

NIFS

11:35 4:35 22:35 21:35 19:35 T. Tokuzawa

NIFS

7+6

･ Non linearity of transport and turbulence in mixture
plasma･ Study of the electron temperature anisotropy byusing the LHD Thomson scattering system･ Heat transport hysteresis with/without e-ITB during
the peripheral 1st X-mode MECH
･ Non-diffusive counter-gradient electron thermaltransport and its turbulence properties･ Isotope effects on plasma confinement properties
and nonlinear interaction of multi-scale turbulence in
LHD･ Potential and density fluctuation measurement in eITB to study isotope effect･ 2D profile of EGAM and its influence on the
turbulence and radial transport of bulk plasmas･ Study of High-k and low-k turbulencescharacteristics･ Turbulence Response in SOL

Lunch

11:35 4:35 22:35 21:35 19:35

Multi-Ion
13:30 6:30

0:30 23:30 21:30 H. Funaba

NIFS

13:40 6:40

0:40 23:40 21:40 R. Yanai

NIFS

13:50 6:50

0:50 23:50 21:50 T. Ido

Kyushu University

14:00 7:00

1:00

0:00 22:00 W. Ko

Korea Institute of
Fusion Energy

14:10 7:10

1:10

0:10 22:10 H. Nakano

NIFS

14:20 7:20

1:20

0:20 22:20 T. Tsujimura

NIFS

14:30 7:30

1:30

0:30 22:30 H. Kasahara

NIFS

14:50 7:50

1:50

0:50 22:50 H. Kasahara

NIFS

14:50 7:50

1:50

0:50 22:50 H. Kasahara

NIFS

14:50 7:50

1:50

0:50 22:50

15:10 8:10

2:10

1:10 23:10 R. Seki･ Partial pressure measurement of neutral gases by
the Penning gauge spectroscopy
4 + 4 ･ ECH alignment･ Influence of energetic particles on the formation of
4+4
the electric potential profiles and impurity transport･ Poloidal in-out Asymmetric Distributions of Core
4+4
Toroidal Rotation by ECH･ Transport study in ECRH superposed ion ITB
4+4
plasma･ Isotope effects in high-density ECH plasma after
4+4hydrogen isotope ice pellet injections･ High density plasma heating using ICH, ECH and
10 + 8NBI.
･ Harmonics cyclotron wave excitation throughparticle-wave interaction process during high ICRF
heating･ Time evolution of particle confinement time on longpulse plasma discharge.
4+4

Break
NIFS

4+4

6/8

･ Analyses of plasma transport and fast ion
confinement with ICRF power modulation

Thursday, July 15, 2021

Program - FY2021 LHD Research Forum

15:20 8:20

2:20

1:20 23:20 V. Moiseenko

Institute of Plasma
Physics of the
National Science
Center “Kharkiv
Institute of Physics
and Technology”

15:30 8:30

2:30

1:30 23:30 M. van Berkel

DIFFER

15:40 8:40

2:40

1:40 23:40 U. Wenzel

Max-Planck-Institut
für Plasmaphysik

15:50 8:50

2:50

1:50 23:50 C. P. Dhard

Max-Planck-Institut
für Plasmaphysik

16:10 9:10

3:10

2:10

0:10 C. P. Dhard

Max-Planck-Institut
für Plasmaphysik

16:10 9:10

3:10

2:10

0:10 C. P. Dhard

Max-Planck-Institut
für Plasmaphysik

16:10 9:10

3:10

2:10

0:10 D. Moseev

Max-Planck-Institut
für Plasmaphysik

16:25 9:25

3:25

2:25

0:25 D. Moseev

Max-Planck-Institut
für Plasmaphysik

16:25 9:25

3:25

2:25

0:25 S. Satake

NIFS

4+4

16:35 9:35

3:35

2:35

0:35 J. L. Velasco

CIEMAT

4+4

16:45 9:45

3:45

2:45

0:45

17:05 10:05 4:05

3:05

1:05 M. Goto

NIFS

17:20 10:20 4:20

3:20

1:20 M. Goto

NIFS

17:20 10:20 4:20

3:20

1:20 B. Peterson

NIFS

4+4

17:30 10:30 4:30

3:30

1:30 J. M. Garcia-Regana

CIEMAT

4+4

17:40 10:40 4:40

3:40

1:40 A. Dinklage

Max-Planck-Institut
für Plasmaphysik

4+4

17:50 10:50 4:50

3:50

1:50 S. Sereda

University of
Wisconsin Madison

4+4

18:00 11:00 5:00

4:00

2:00

4+4

･ Improved regimes of radio-frequency plasma startup in LHD･ Investigation of particle transport by optimized multisinusoidal modulation･ Neutral pressure measurements with robust
4+4
pressure gauges of the ITER type･ Exposure of material samples into the edge plasma
10 + 8by means of the LHD manipulator
4+4

7+6

･ Studying the dependence of neutral particle
pressures in the divertor region on cryo-vacuum / NEG
pumps operation･ ICRF plasma production in view of IC wallconditioning in W7-X
･ Effect of the 3-ion ICRF heating on impurity exhaustin stellarators･ Reconstruction of the 5D phase-space distributionfunction･ Particle species dependence of impurity holephenomenon･ Configuration dependence of the core impurity
transport and impurity hole

Break
7+6

Adjourn

7/8･ Z-dependence of transport characteristics for thehigh-Ti plasmas･ Impurity transport study for the electron-root and ionroot regimes･ Study of poloidal and toroidal asymmetries during
impurity seeding in LHD.
･ Impact of impurities at non-trace concentration on
the background plasma･ Mixture-induced phase transitions in multi-ion
transport･ He exhaust property in helical divertor

Program - FY2021 LHD Research Forum

Friday, July 16, 2021
EU

US

JST CEST EDT

JP

CDT

Presen + Q&A
PDT

Multi-Ion

9:00

2:00 20:00 19:00 17:00 E. Gilson

PPPL

4+4

･ Initial experimental tests of lithium powder injection
for plasma modification in stellarator geometries

9:10

2:10 20:10 19:10 17:10 R. Lunsford

Princeton Plasma
Physics Laboratory

4+4･ Plasma conditioning and performance improvement
in stellarator geometries through continuous boron
carbide granule injection

9:20

2:20 20:20 19:20 17:20 Z. Sun

PPPL

4+4

･ Effect of Lithium and Boron powder injection on
long-term wall retention in LHD with Helium andDeuterium fueling

9:30

2:30 20:30 19:30 17:30 N. Ashikawa

NIFS

4+4

9:40

2:40 20:40 19:40 17:40 Y. Yoshimura

NIFS

4+4

9:50

2:50 20:50 19:50 17:50･ Wall recycling control using low Z powder dropping
and the change of their spatial distributions･ Steady state particle balance of plasmas with active
control of H/D gas-puffing and cryopumping

Break･ The evaluation of the toroidal uniformity of the boron
deposition on the divertor plates for the real-timeboronization using the impurity powder dropper

10:10 3:10 21:10 20:10 18:10 M. Shoji

NIFS

10:30 3:30 21:30 20:30 18:30 M. Shoji

NIFS･ The radiation enhancement and triggering the island
divertor detachment by direct supply of BN powders
into the magnetic island in the LHD peripheral plasmausing the IPD

10:30 3:30 21:30 20:30 18:30 M. Shoji

NIFS･ The observation of the three-dimensional
trajectories of TESPEL ablation clouds in the LHD
peripheral plasma for evaluation an impurity dusttransport simulation code DUSTT

10:30 3:30 21:30 20:30 18:30 S. Masuzaki

NIFS

10:50 3:50 21:50 20:50 18:50 S. Masuzaki
10:50 3:50 21:50 20:50 18:50 S. Masuzaki
10:50 3:50 21:50 20:50 18:50 G. Motojima

NIFS
NIFS
NIFS

11:15 4:15 22:15 21:15 19:15 G. Motojima

NIFS

11:15 4:15 22:15 21:15 19:15 G. Motojima

NIFS

11:15 4:15 22:15 21:15 19:15 G. Motojima

NIFS

11:15 4:15 22:15 21:15 19:15 K. Nagaoka

NIFS

11:25 4:25 22:25 21:25 19:25 H. Yamada

The University ofTokyo

10 + 8･ Investigation of deuterium particle balance with andwithout divertor pumping during long pulse discharges･ Helium pumping with boron powder dropping･ Investigation of impurity seeding from inner port
13 + 10 ･ Wall exchange mechanism in multi-ions plasma･ The relation between plasma confinement andneutral particle on divertor condition･ Helium removal in helium beam experiments･ Transient wall exchange phenomena using longpulse discharge
4 + 4 ･ Ion Heating Experiment with He beam injection･ Accumulation of confinement data in the case of
4+4
significant ion heating
10 + 8Lunch

11:35 4:35 22:35 21:35 19:35
13:30 6:30

0:30 23:30 21:30 Y. Fujiwara

NIFS

13:45 6:45

0:45 23:45 21:45 Y. Fujiwara

NIFS

13:45 6:45

0:45 23:45 21:45 S. kamio

NIFS

4+4

13:55 6:55

0:55 23:55 21:55 K. Hanada

Kyushu University

7+6

14:10 7:10
14:10 7:10

1:10
1:10

0:10 22:10 K. Hanada
0:10 22:10 N. Tamura

Kyushu University
NIFS

7+6

14:25 7:25

1:25

0:25 22:25 N. Tamura

NIFS

14:25 7:25

1:25
1:40

0:25 22:25 K. Ida
0:40 22:40 K. Ida

NIFS

14:40 7:40
14:40 7:40

1:40

0:40 22:40 K. Ida

NIFS

14:50 7:50

1:50

0:50 22:50

7+6

7+6

NIFS
4+4

End
of
Forum

8/8

･ A verification of helium beam depositions･ Observation of phase space distribution of fasthelium ions by Fast-ion charge exchange
spectroscopy diagnostic･ Helium ion transport and exhaust in deuterium
plasma during the steady-state operation･ He transport on LHD - Inside Plasma ･ He transport on LHD - Plasma Wall Interaction･ Effect of a mixed-ion plasma on impurity transport･ Commissioning of impurity beam injections with
NBI#5 into LHD plasmas･ Mixing and non-mixing states of helium ion･ Transport in the isotope mixture plasma
Closing ANNOUNCEMENT : The following schedule
for the upcoming LHD experiment campaign