12th International Conference on Open Magnetic Systems for Plasma

Confinement (OS2018)

August 27-31, 2018, Tsukuba, Japan

Program

MONDAY, 27 AUGUST 2018 Bus transfer from the Okura Frontier Hotel Tsukuba to the 30th Anniversary Hall of University of Tsukuba at 15:30.

Registration (15:00－17:45)

will be held in the 30th Anniversary Hall of University of Tsukuba.

Welcome Reception (16:00－17:45)

will take place in the 30th Anniversary Hall of University of Tsukuba. Return bus transfer to the hotel will be provided at 17:45.

Conference Info Registration and Welcome Reception at Aug. 27. Poster Session will be held at Aug. 29.

All session will take place in the International Conference Room of the University Hall of the University of Tsukuba.

From Aug. 28 to Aug. 31, the registration desk will be set in front of the International Conference Room where is the main conference room.

TUESDAY, 28 AUGUST 2018 Bus transfer from the hotel to the University Hall of the University of Tsukuba at 8:30.

Opening of the conference (09:00－9:20)

Chairperson: Prof. Yousuke NAKASHIMA (Plasma Research Center, University of Tsukuba) Welcome speech: Prof. Hideo KIGOSHI (Vice-president of University of Tsukuba) Session I: Current status of open magnetic systems for plasma confinement Chairperson: Prof. Mizuki Sakamoto (Plasma Research Center, University of Tsukuba) 09:20 PL1: Studies of plasma confinement and stability in a gas-dynamic trap: results of 2016

– 2018 Dr. Peter BAGRYANSKY (Budker Insitute of Nuclear Physics SB RAS) 10:00 PL2: Present status and future in GAMMA 10/PDX Project

Prof. Yousuke NAKASHIMA (Plasma Research Center, University of Tsukuba) 10:40 Coffee break 11:00 PL3: The path of KMAX experiment to improve the confinement of central cell plasmas

Prof. Xuan SUN (University of Science and Technology of China) 11:40 PL4: Development of an axisymmetric mirror-based neutron source using recent

advances in technology Prof. Cary FOREST (University of Wisconsin, Madison)

Lunch (12:20－13:30)

Session II: Plasma confinement, heating and stability, plasma-wall interaction Chairperson: Dr. Peter BAGRYANSKY, (Budker Insitute of Nuclear Physics SB RAS) 13:30 I1: Multiple-Mirror Traps in the Budker INP

Dr. Aleksandr BURDAKOV (Budker Insitute of Nuclear Physics SB RAS) 14:00 I2: A brief review of the recent studies on liquid metal plasma-facing component concepts

Prof. Yoshihiko HIROOKA (Chubu University) 14:30 O1: Electrode biasing stabilization in C-2W field-reversed configuration experiments

Dr. Vladimir Sokolov (TAE Technologies, Inc.) 14:50 O2: MHD stabilization of high-electron-temperature discharge in the GDT experiment

Prof. Alexander SHALASHOV (Institute of Applied Physics, Russian Academy of Sciences) 15:10 Coffee break Chairperson: Dr. Sergei PUTVINSKI (Trialpha technologies)

15:40 I3: Recent progress of the DEMO divertor design in Japan, and physics and engineering issues

Dr. Nobuyuki ASAKURA (National Institutes for Quantum and Radiological Science and Technology)

16:10 I4: Modeling of plasma production and heating by electromagnetic waves in axisymmetric mirror configuration

Prof. Atsushi FUKUYAMA (Department of Nuclear Engineering, Kyoto University) 16:40 O3: Ion Cyclotron Resonant Heating in the Central Cell of the Keda Mirror with

AXisymmetricity (KMAX) Dr. Zhida YANG (Department of Engineering and Applied Physics, University of Science and

Technology of China) 17:00 O4: Stability of Drift-Cyclotron Loss-Cone and Double-Humped Modes in Multispecies

Plasmas Prof. Igor KOTELNIKOV (Budker Insitute of Nuclear Physics SB RAS) 17:20 O5: Investigation of slow wave excitation in the GAMMA 10/PDX central cell

Dr. Ryuya IKEZOE (Research Institute for Applied Mechanics, Kyushu University) 17:40 O6: Development of noise-less divergence-free magnetic probe system in GAMMA 10

Dr. Nobuhiro NISHINO (Graduate School of Engineering, Hiroshima University) Return bus transfer to the hotel at 18:15.

WEDNESDAY, 29 AUGUST 2018 Bus transfer from the hotel to the University Hall of the University of Tsukuba at 8:30. Session III: Plasma confinement, heating and stability Chairperson: Prof. Xuan SUN (University of Science and Technology of China) 09:00 PL5: Advanced Beam-Driven Field-Reversed Configuration Research at TAE

Technologies Dr. Sergei PUTVINSKI (Trialpha technologies) 09:40 I5: Coherent and Incoherent Magnetic Fluctuations in Core and Jet Regions of the C-2W

Field-Reversed Configuration Device Dr. Thomas ROCHE (TAE Technologies, Inc.) 10:10 O7: Numerical studies of plasma flow and electrostatic potential formation in expander

divertor Dr. Peter YUSHMANOV (TAE Technologies, Inc.) 10:30 Coffee break

Session IV: Plasma diagnostics Chairperson: Prof. Young-chul GHIM (Department of Nuclear and Quantum Engineering, KAIST) 10:50 I6: Progress of Thomson scattering system in the tandem mirror GAMMA 10/PDX

Dr. Masayuki YOSHIKAWA (Plasma Research Center, University of Tsukuba) 11:20 O8: An outlook into a possible ICCD based Thomson scattering system for high

temperature plasmas Dr. Kiyong LEE (National Fusion Research Institute, Korea) 11:40 O9: Analysis of multipoint fluctuations in the transient discharge from attached to

detached states in GAMMA 10/PDX Dr. Hirohiko TANAKA (Graduate School of Engineering, Nagoya University) 12:00 O10: Application of He I Line Intensity Ratio Method to Lyot-Filter Based Imaging

Spectrometry on MAP-II Divertor Simulator Prof. Shinichiro KADO (Institute of Advanced Energy, Kyoto University)

Group photographing (12:20－12:40)

will take place near the Conference Room. Electronic copies will be available on the conference web site.

Lunch (12:40－13:30)

Poster session (15:00－17:00)

Authors are requested to put up their posters at 14:00 Departure from the University Hall of the University of Tsukuba to the Banquet at 17:30.

Banquet (18:00－21:00)

will take place in the SANSUITEI (Traditional Japanese High-class Dining). Return bus transfer to the hotel at 21:15.

LIST OF POSTERSTitle Presenter Boad

Recent results of ICRF heating experiments for a divertor simulation study on GAMMA 10/PDX

Dr Mafumi HIRATA P1

Sensitivity check of background plasma parameter during SMBI in the GAMMA 10 central-cell by 3-D Monte-Carlo simulations

Dr Md. Maidul ISLAM P2

Investigation of ICRF heating efficiency in plug/barrier cell on GAMMA 10/PDX with a full-wave code

Mr Yushi KUBOTA P3

Collisional merging formation of a field-reversed configuration for excitation of low-frequency wave in the FAT-CM device

Mr Akiyoshi HOSOZAWA

P4

Theoretical framework of relation between anomalous resistivity and toroidal spin-up of field-reversed configurations

Prof Toshiki TAKAHASHI P5

Burst microwave emissions and micro-instabilities driven by strong ECRH in the GDT experiment

Prof Alexander SHALASHOV

P6

Control of electron-cyclotron instability driven by strong ECRH in a minimum-B magnetic trap

Prof Alexander SHALASHOV

P7

Code development for the calculations of the electron beams in the cavity of the future high-power gyrotrons

Dr Tomoharu NUMAKURA

P8

Performance Test of 28/35 GHz Dual-Frequency Gyrotron for CW Operation

Ms Maki OKADA P9

Observation of density fluctuations originated from RF waves with two channel reflectometer in GAMMA 10/PDX

Mr Ryo SEKINE P10

Observation of potential increase in the central cell due to ICRF heating in the non-axisymmetric anchor cell on GAMMA 10/PDX

Mr Atsuto TANAKA P11

Hybrid simulation of high-beta linear plasma column applied with low frequency waves

Mr Takahiro URANO P12

Stochastic behavior and Lyapunov exponent analysis in non adiabatic traps

Mr Ryo MATSUMOTO P13

Plasma particle trajectory study for a device combining hollow cathode discharge and non-adiabatic trap

Mr Shuya IWATA P14

Analytical experiment of time evolution of deceleration effect in traveling wave direct energy converter using dual-frequency modulation

Mr Kazuhiro SHIBATA P15

Working characteristics of a combined plasma source for ion-ion separation experiments in direct energy conversion

Mr Y. OKAMOTO P16

Examination of bunching effect of dual-frequency modulation in a traveling wave direct energy converter simulator

Prof Hiromasa TAKENO P17

Studies on plasma generation in a thruster using a single helical antenna with variable axial length

Mr M. MARUKI P18

Improvement of electron collection using a magnetic field suppressing mirror effect in a secondary electron direct energy converter simulator

Dr A. KURISUNO P19

Time behavior of perpendicular velocity of density fluctuations with a series of electron cyclotron heatings in GAMMA 10

Dr Junko KOHAGURA P20

Doppler spectroscopy system for the plasma velocity measurements in SMOLA helical mirror

Ms Anna INZHEVATKINA

P21

Development of the Thomson Scattering Measurement System for Diagnosing Upstream Plasmas in NAGDIS-II

Mr Hiroki TAKANO P22

Spectroscopic measurement of electron temperature and density from He I line intensity ratio in GAMMA 10/PDX

Mr Tomohiro MIKAMI P23

Evaluation of electron density and space potential using ion sensitive probe in D -module of GAMMA 10/PDX

Mr Yosuke KINOSHITA P24

Measurement of end-loss ions originated from spontaneously excited high frequency waves by using an MCP detector on GAMMA 10

Mr Koki IZUMI P25

Obervation of plasma MHD activity on GDT by charge exchange atoms

Mr Egor PINZHENIN P26

Neurron spectrometer based on stilbene scintillator Mr Egor PINZHENIN P27

Two dimensional Hα emission measurements using the multi-channel Hα array system in GAMMA 10 / PDX

Mr Tomoya YAMASAKI P28

Ion temperature measurement of divertor-simulating plasma aiming for detached divertor formation study

Mr Hiroyuki TAKAHASHI

P29

Dynamic response of plasma detachment caused by MAR to transient heat flux in GAMMA 10/PDX

Mr Akihiro TERAKADO P30

Thermodynamic properties of ions in the end region of GAMMA 10/PDX

Mr Kunpei NOJIRI P31

Analysis of Molecular Activated Recombination in Detached Divertor Plasmas

Ms Yuka TSUBOTANI P32

Ion beam production with LaB6 hot cathode for divertor plasma simulation experiments in DT-ALPHA device

Mr Peerapat BOONYARITTIPONG

P33

Analysis of Ar Impurity Transport in the Large Tandem Mirror Device GAMMA 10/PDX Plasmas

Ms Sayuri TAKECHI P34

Diagnostics for Surface of Tungsten Exposed to Deuterium Plasma by Spectroscopic Ellipsometry

Mr Yu SUZUKI P35

Effects of curved divergent magnetic field on H2 / He mixture plasma in the linear divertor simulator TPD-Sheet IV

Mr Toshikio TAKIMOTO P36

Effect of impurity injection on particle and heat flux decay length in DiPS-2

Mr Min-Keun BAE P37

Comparison of Sheath heat transmission factor between experimental and theoretical values by thermocouples and triple probe in DiPS-2

Mr Seo-Jin JEONG P38

Global instability structure in a linear beam confinement system

Mr Kojiro SEKIGUCHI P39

Monte Carlo simulation of dissipation processes in ion beam plasma

Mr Gaku SAKAI P40

Confinement of D -3He fusion product particles in a non adiabatic trap

Mr Yamato TSUNOKAKE P41

Non-Axisymmetric Radiation from Oversized Surface Wave Oscillator Driven by Weakly Relativistic Electron Beam

Mr Yuta ANNAKA P42

Dynamics of spatial profiles of atomic density in gas dynamic trap expander plasmas

Dr Andrey LIZUNOV P43

THURSDAY, 30 AUGUST 2018 Bus transfer from the hotel to the University Hall of the University of Tsukuba at 8:30. Session V: Direct Energy Conversion, Applications of Mirror Plasmas Chairperson: Prof. Cary FOREST (University of Wisconsin, Madison) 09:00 PL6: Recent advancement of research on plasma direct energy conversion

Prof. Hiromasa TAKENO (Kobe University) 09:40 I7: A new axisymmetric mirror experiment at UW-Madison

Dr. Jay. ANDERSON (University of Wisconsin-Madison) 10:10 O11: Operation modes of hot-cathode plasma source for linear devices

Dr. Timur AKHMETOV (Budker Insitute of Nuclear Physics SB RAS) 10:30 O12: Influence of plasma density gradient on emission of submillimeter waves at

interaction of REB with plasma in long magnetic trap Prof. Andrey ARZHANNIKOV (Budker Insitute of Nuclear Physics SB RAS) 10:50 Coffee break Plasma Confinement, Heating and Stability Chairperson: Prof. Alexandr IVANOV (Budker Insitute of Nuclear Physics SB RAS) 11:10 I8: Fast Ion Physics in the Advanced FRC

Dr. Richard MAGEE (TAE Technologies, Inc.) 11:40 O13: First Experimental Campaign on SMOLA Helical Mirror

Dr. Anton SUDNIKOV (Budker Insitute of Nuclear Physics SB RAS) 12:00 O14: Axial Plasma Confinement in Gas Dynamic Trap

Dr. Elena SOLDATKINA (Budker Insitute of Nuclear Physics SB RAS)

Lunch (12:20－13:30)

Session VII: Plasma-wall Interaction Chairperson: Prof. Noriyasu OHNO (Graduate School of Engineering, Nagoya University) 13:30 PL7: Overview of recent plasma-material interaction studies in the linear plasma device

PSI-2 Dr. Arkadi KRETER (Forschungszentrum Juelich) 14:10 I9: Investigation of basic plasma properties in a newly constructed cylindrical multidipole

chamber, MAXIMUS, with variable magnetic X-point configurations Prof. Young-chul GHIM (Department of Nuclear and Quantum Engineering, KAIST)

14:40 O15: Studies of material in exposure to fusion reactor relevant loads in BINP Dr. Aleksey ARAKCHEEV (Budker Insitute of Nuclear Physics SB RAS) 15:00 O16: Characteristic of up stream and downstream on detached plasma in D -module of

GAMMA 10/PDX Dr. Takaaki IIJIMA (Plasma Research Center, University of Tsukuba) 15:20 O17: Heat flux evolution in GAMMA 10/PDX divertor experiment

Prof. Hiroto MATSUURA (Osaka Prefecture University) 15:40 Coffee break Chairperson: Prof. Bernhard UNTERBERG (Forschungszentrum Jülich GmbH) 16:00 O18: GAMMA PDX-SC project: status and perspectives

Prof. Mizuki SAKAMOTO (Plasma Research Center, University of Tsukuba) 16:20 I10: Progress in steady-state high density TPD-type plasma source development for Demo

divertor simulation experiment Dr. Naomichi EZUMI (Plasma Research Center, University of Tsukuba) 16:50 O19: Generation of high density and low temperature nitrogen plasmas with spiral

structure and its application to nitrogen atom source Prof. Noriyasu OHNO (Graduate School of Engineering, Nagoya University) 17:10 O20: Study of the plasma parameters in the D-module of GAMMA 10/PDX during

impurity gases injection Dr. Md. Shahinul ISLAM (Plasma Research Center, University of Tsukuba) 17:30 O21: Analysis on the sensitivity of the ASDEX type fast ionization gauge in mixed radiator

gases of divertor simulators Dr. Kazuya ICHIMURA (Kobe University) Return bus transfer to the hotel at 18:05.

FRIDAY, 31 AUGUST 2018 Bus transfer from the hotel to the University Hall of the University of Tsukuba at 8:30. Session VIII: Prospects of Mirror-Based Reactors, Plasma-wall Interaction Chairperson: Dr. Arkadi KRETER (Forschungszentrum Juelich) 09:00 PL8: Future perspectives and status of magnetic mirror studies in Novosibirsk

Prof. Alexandr IVANOV (Budker Insitute of Nuclear Physics SB RAS) 09:40 O22: Fuel evolution in hybrid reactor based on thorium subcritical assembly with open

trap as fusion neutron source (computer simulations) Dr. Andrey ARZHANNIKOV (Budker Insitute of Nuclear Physics SB RAS) 10:00 O23: Spontaneous Ion Temperature Gradient in Inhomogeneous Magnetic Fields and Its

Effect on the Parallel Heat Transport Dr. Satoshi TOGO (Plasma Research Center, University of Tsukuba) 10:20 Coffee break

Session IX: Plasma-wall Interaction, Applications of Mirror Plasmas, Plasma Confinement, Heating and Stability Chairperson: Prof. Yousuke NAKASHIMA (Plasma Research Center, University of Tsukuba) 10:40 I11: Overview of the research activity on the plasma-wall interaction in the KSTAR

tokamak Dr. Hyungho LEE (National Fusion Research Institute, Korea) 11:10 I12: Generation and Measurement of High Intermittent Heat Flux in GAMMA 10

Tandem Mirror Dr. Ryutaro MINAMI (Plasma Research Center, University of Tsukuba) 11:40 O24: Neutral beam injection system for the CAT experiment

Dr. Vladimir DAVYDENKO (Budker Insitute of Nuclear Physics SB RAS) Chairperson: Dr. Hyungho LEE (National Fusion Research Institute, Korea) 12:00 O25: Study of Spoof Plasmon Formed on Periodically Corrugated Metal Surface Based

on Cavity Resonance Method Prof. Kazuo OGURA (Graduate School of Science and Technology, Niigata University) 12:20 O26: Development of a high-density plasma in converging field following a magnetic

beach plasma source Dr. Atsushi OKAMOTO (Graduate School of Engineering, Nagoya University) 12:40 O27: Effect of the potential of the central cell on end-loss ion in GAMMA 10/PDX

Mr. Seowon JANG (Plasma Research Center, University of Tsukuba) 13:00 O28: High-pressure limit of equilibrium in axisymmetric open traps

Mr. Mikhail KHRISTO (Budker Insitute of Nuclear Physics SB RAS)

Conference closing (13:20－13:40)

Return bus transfer to the hotel at 13:50.

Machine Tour of GAMMA 10/PDX (14:30－15:30)

If you plan to attend the machine tour, please notify your name at the Registration desk until Aug. 28. Return bus transfer to the hotel at 15:30.