Plasma Studies at DUT
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Plasma Studies at DUT Xiaogang Wang Center for Plasma Science & Technology Department of Physics College of Advanced Science & Technology Dalian University of Technology May 2006, Dalian, China
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Plasma Studies at DUT. Xiaogang Wang Center for Plasma Science & Technology Department of Physics College of Advanced Science & Technology Dalian University of Technology May 2006, Dalian, China. OUTLINE. Overview Plasma Theory & Simulation Team Fusion Related Research Brief Summary. - PowerPoint PPT Presentation
Transcript of Plasma Studies at DUT
Plasma Studies at DUT
Xiaogang Wang
Center for Plasma Science & TechnologyDepartment of Physics
College of Advanced Science & TechnologyDalian University of Technology
May 2006, Dalian, China
OUTLINE
• Overview• Plasma Theory & Simulation
Team• Fusion Related Research• Brief Summary
Overview
• Plasma Physics Program at Department of Physics – Faculty
• > 20 with 2 Chair Professors and 3 Outstanding Young Career Awardees
– Graduate Program since 1982 • Enrollment: 25 students • Graduate > 10 PhDs annually
– Undergraduate Program since 1998• Enrollment: 30/60 alternatively
Overview
• University Center for Plasma Science & Technology– State Key Disciplinary (2 Nationwide)– 40+ faculty and 200+ graduate students– Plasma branch and theory & simulation
arm of State Key Lab of Materials Modification by Beams
– Research labs over the university (School of Environment Science, School of Chemical Technology, School of Life Science, School of Electronics & Info Technology)
Overview
•College of Advanced Science & Technology (CAST) – Fusion Energy & Plasma
Physics– Space Plasma Physics– Computational Physics &
Applications
Overview
• Research activities– MCF Plasma Physics– Space Plasma Physics (DSP-Cluster)– Plasma Proceedings (Plasma-Wall
Interactions)– Atmospheric Pressure Plasma Glow
Discharge– Plasma Sources– Beam Physics (Low Power, High
Current Beams)– Other Industry Applications
Plasma Theory & Simulation• University supported research
team for Basic Plasma Physics• A Faculty of 5 and 40+
graduate students• ~ RMB 1M annual research
budget• Associated with SWIP, USTC,
ZJU, HIT, PKU, NPU
Fusion Related Research• Fast magnetic reconnection
– Hall MHD reconnection
– Unmagnetized ions and agnetized electrons
– Length scale of ion inertial length di
Fusion Related Research
• Sawtooth crashes in Tokamaks – Wang et al, PRL 70, 1627 (1993): in sawtooth c
rashes (m=1 king-tearing mode)
– Reconnection ribbon width scaled by =VA/i=di
– Reconnection ribbon lengthrs0=rsA/i=(dirs)1/2
2
4 e
pe
Pd
c dt ne nec
V B J J BE
�
Fusion Related Research
Sawtooth crashes in Tokamaks Wang et al, PRL 70, 1627 (1993):
Sawtooth crashes in Tokamaks In Wang et al, PRL 70, 1627 (1993):
Fusion Related Research
• Mode-locking due to error field– Previous work in resistive tearing regime– Current research:
• Neoclassical effects?• Error field on double-tearing modes?• Toroidal rotations?
Fusion Related Research
• Resistive wall modes (RWM)– Rotating wall to stabilize RWM– Differential rotation of plasmas– Wesson, Phys. Plasma 5, 3816(1998):
• The plasma rotation would generate another type of RMW Vrotation > sqr(2)VA
– Further studies:• Compressibility: Vrotation > cs
– Our research (linear, numerical): S. Y. Cui tomorrow afternoon
J. A. Wesson, Phys. Plasma 5, 3816 (1998)
Brief Summary
• A strong plasma program DLUT a wide spectrum
• A strong education basis also• Fusion studies are picking up• Collaborations needed
