CMSO meeting, Madison, 6-August-2004AIST

Lab-Space-Plasma CollaLab-Space-Plasma Collaborations at the AISTborations at the AIST

Lab-Space-Plasma CollaLab-Space-Plasma Collaborations at the AISTborations at the AIST

Y. Yagi, H. Koguchi, Y. Hirano, T. Shimada, S. Kiyama,

K. Shinozaki1 , Y. Ishisaki1, A. Hoshino1, K. Mitsuda2 , T. Asai3, M. Nagata4

Nat. Inst. of Adv. Industr. Sci. and Tech. (AIST)1 Tokyo Metropolitan Univ., 2 ISAS, JAXA,

3 Nihon Univ., 4 Hyogo Univ.

CMSO meeting, Madison, 6-August-2004AIST

The largest national inst. in Japan (~3200 empl.)

Variety of scientific R&D Reversed Field Pinch (RFP) at Tsukuba

TPE-RX and TPE-QS

AIST and TPE-RX

R/a =

1.72/0.45m

~RFX

~MST

CMSO meeting, Madison, 6-August-2004AIST

TES-X-ray detector (1)■Superconducting Transition-Edge Sensor (TES) Calorimeter : X-ray detector■High energy resolution (dE~10-20 eV) in 0.1-10 keVcf. dE~200 eV for Si(Li)■Developed for X-ray astronomy to be mounted on Astro-E2■Ti/Au layer + SiN/Si base■Working at 0.1K; cooled by Adiabatic Diamagnetization Refrigerator (ADR)

GOALS: (AIST) Identification of high Z impurity lines and line free windows for Te measurement (JAXA, TMU) Test of the prototype detector using a real plasma source

SPEC.S: => see right

STATUS: Installation of the detector to TPE-RX has just started from Aug-3.

CMSO meeting, Madison, 6-August-2004AIST

TES-X-ray detector (2)Installed and cooled down in this week!: Aug. 3-5

Experiment will be done in Aug. 9-18.

First data Aug-5

CMSO meeting, Madison, 6-August-2004AIST

Helicity injection has started. Initial results are prommissing.

GOALS: Fuelling, Helicity injection (Current Drive), => Active control of the helicity, Current drive, Plasma biasing, Reconnection

SPEC.S: V=0.8kV, bias=3mWb, pulse=5ms, H~24mWb2

STATUS: Collaboration with Nihon Univ. & Hyogo Univ. Initial exp. showed an increase and sustainement of ne and a change of t

CMSO meeting, Madison, 6-August-2004AIST

Self-organization of two distinct MHD structures

Locked modePhase- & wall-locked structureY. Yagi et al, POP 6 (1999) 3824

Quasi-single helicity state (QSH) P. Martin et al, NF 43 (2003) 1855

Distinct structures in the Real space and Wavenumber space

CMSO meeting, Madison, 6-August-2004AIST

Japanese version of the CMSO

H

D

RM

T

C

CMSO-US

R

Imaginary CMSO-Jpn

SO

Diag

A common figure of merit representing the ‘self-organization’ may be needed. Change of free energy WF/WF0, Size scale? A new approach to understand a whole system may be needed.