论文信息 - Major upgrades of the high frequency B-dot probe diagnostic suite on ASDEX Upgrade

Major upgrades of the high frequency B-dot probe diagnostic suite on ASDEX Upgrade

The high frequency B-dot (HFB) probe diagnostic on the ASDEX Upgrade tokamak has undergone a considerable upgrade during the 2016 opening of the torus. The probe coverage is now greatly expanded toroidally, as well as radially with the addition of probes on the high field side and the removable manipulator head. A new 2-channel fast digitizer now allows to examine and record radio frequency (RF) wave emissions emanating from the plasma in the ion cyclotron range of frequencies (ICRF). Possible studies that can be achieved now include: a study of core ICRF power absorption efficiency; a study of ion cyclotron emissions from the plasma generated by energetic ions; and study of ICRF wave/plasma turbulence interactions in the scrape-off layer region.

[1] Jet Efda Contributors,et al. Improved break-in-slope analysis of the plasma energy response in tokamaks , 2008 .

[2] S. J. Wukitch,et al. Characterization and performance of a field aligned ion cyclotron range of frequency antenna in Alcator C-Moda) , 2013 .

[3] Daniele Milanesio,et al. ITER ICRF antenna analysis and optimization using the TOPICA code , 2010 .

[4] T. Lunt,et al. 3D simulations of gas puff effects on edge density and ICRF coupling in ASDEX Upgrade , 2016 .

[5] E T Supra,et al. Effects induced by ICRF waves on various confinement schemes in Tore Supra , 1994 .

[6] Gilles Berger-By,et al. Commissioning of the ITER-like ICRF antenna for JET , 2009 .

[7] V. Bobkov,et al. A new B-dot probe-based diagnostic for amplitude, polarization, and wavenumber measurements of ion cyclotron range-of frequency fields on ASDEX Upgrade. , 2015, The Review of scientific instruments.

[8] R. Neu,et al. First results with 3-strap ICRF antennas in ASDEX Upgrade , 2016 .

[9] Richard Majeski,et al. A mechanism for beam‐driven excitation of ion cyclotron harmonic waves in the Tokamak Fusion Test Reactor , 1994 .

[10] Naoto Tsujii,et al. I-mode: an H-mode energy confinement regime with L-mode particle transport in Alcator C-Mod , 2010 .