程钧, 博士, 副研究员。目前在HL-2A托卡马克装置上从事边缘等离子体物理与实验工作。在边缘极限振荡环、L-H转换以及边缘输运垒等物理机制领域取得许多创新性成果。获得过国家自然科学基金面上项目和国家磁约束专项人才项目的资助。在重要学术刊物Physics Review Letter , Nuclear Fusion 等杂志上发表学术论文30 余篇，多次在国际大会上做口头报告。
Time: Thursday, June 29th, 2:00 pm
Venue: Rm. 413, Bld. 11#, Yuquan Campus
Title:
Experimental studies of low-intermediate-high confinement transition on HL-2A tokamak
Abstract:
Understanding L-H transition mechanisms is essential for providing a predictable power threshold for a successful operation of fusion reactor. The limit cycle oscillation (LCO), observed in slow L-H transition with expansion of time scale, provides opportunities for study of the nonlinear transition mechanism quantitatively. This report in detail introduces experimental studies of low-intermediate-high confinement mode transitions at marginal heating power on the HL-2A. The mutual interactions between the radial electric field, turbulence and mean pressure gradient are analyzed. The insight into the physics of H-mode is illustrated.
代表性文章:
1. J.Cheng, J.Q.Dong, K.Itoh, et al., Phys. Rev. Lett. 110, 265002 (2013)
2. J.Cheng, J.Q.Dong, L.W.Yan, et al., Nucl. Fusion 53, 093008 (2014)
3. J.Cheng, J.Q.Dong, LW.Yan, et al., Europhysics Letters 116, 150011 (2016)
4. J. Cheng, J.Q.Dong, L.W.Yan, et al., Nucl. Fusion 53, 093008 (2013)
5. J.Cheng, L.W.Yan, et al. , Plasma Phys. Control Fusion 52, 055003 (2010)
6. J. Cheng, L.W.Yan, K.J.Zhao, et al., Nuclear Fusion 49, 085030 (2009)
7. J.Cheng, L.W.Yan, J.Q.Dong, et al.,J. Nucl. Mater 438, S1200 (2013)
8. J.Cheng, J.Q.Dong, L.W.Yan, et al., J. Nucl. Mater 463,455 (2015)
