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Progress of Magnetic Reconnection experiment in L inear M agnetized P lasma D evice

Progress of Magnetic Reconnection experiment in L inear M agnetized P lasma D evice. Xie , JinLin & LMPD group CAS KEY LABORATORY OF BASIC PLASMA PHYSICS UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA Suzhou, September 24, 2007. Outline. Introduction What & Why & How LMPD in USTC

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Progress of Magnetic Reconnection experiment in L inear M agnetized P lasma D evice

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  1. Progress of Magnetic Reconnection experiment in Linear Magnetized Plasma Device Xie, JinLin & LMPD group CAS KEY LABORATORY OF BASIC PLASMA PHYSICS UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA Suzhou, September 24, 2007

  2. Outline • Introduction • What & Why & How • LMPD in USTC • What we have done by now • Background plasma • Topology of the magnetic field for MR • Diagnostics / Data Acquisition System / … • Preliminary result • Future plan

  3. Introduction: Linear Magnetized Plasma Device in USTC Experimental chamber LIF quad-probe emissive probe langmuir probe Bmax: 1000Guass Te:1~10ev Ti:0.03~0.5ev Denisty:108~1013cm-3 DC, RF & Helicon discharge source；

  4. Plasma source: Helicon discharge 13.56MHz,2KW Match network Nagoya antenna Plasma Density RF Power Radius

  5. Background plasma for MR experiment

  6. Current time Magnetic field for reconnection Simulation result via OPERA

  7. Copper plate and Pulse current source

  8. Diagnostics for MR • Characteristic for MR experiment in lab plasma • High spatial resolution: small size Vs large enough S/N • Wide signal bandwidth: Low freq. ~ MHz or microwave • High Spatio-temporal resolution • What we have now： • 3D B dot probe B0 , B1 Current sheet, E… • Retarding grid energy analyzer  EVDF & IVDF & flux • Electrostatic probes: Langmuir probe, emissive probe, Mach probe… Ne, Te, Vf, Vp, Iion, Ie, Ion flux… • Laser induced fluorescence(LIF)  IVDF & ion flux • Microwave antenna and related instrument EM radiation • DAQ system: 12 channels x 5M; 128 x 2M; 2 x 60M

  9. Vacuum chamber precision platform for 2D scanning probe

  10. Ion Saturation Current Electron Temperature

  11. Reconstruction of the magnetic field linein order to verify MR process

  12. Vacuum evolution

  13. Research plan • Verification of MR process in LMPD • Heating and acceleration of electron & ion • Electrostatic & electromagnetic turbulence • ……….

  14. Thank you!

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