Error Analysis of a Probe Array Used for Transient Radio-Frequency Impedance Measurement in Ion Cyclotron Resonance Heating Experiments

1989 ◽  
Vol 16 (2) ◽  
pp. 225-228
Author(s):  
Zhaoshen Wang ◽  
Yiamin Wang ◽  
Dezheng Xu
Keyword(s):  
Error Analysis ◽  
Radio Frequency ◽  
Cyclotron Resonance ◽  
Impedance Measurement ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron ◽  
Probe Array

The High-Power (3-MW) Long-Pulse (3-s) Radio-Frequency System for Ion Cyclotron Resonance Heating Experiments on TEXTOR

1987 ◽  
Vol 12 (3) ◽  
pp. 449-475 ◽  
Author(s):  
G. Van Oost ◽  
V. P. Bhatnagar ◽  
T. Delvigne ◽  
P. Descamps ◽  
F. Durodié ◽  
...  
Keyword(s):  
Radio Frequency ◽  
High Power ◽  
Cyclotron Resonance ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron ◽  
Long Pulse

On radio-frequency wave-induced radial transport and wave helicity

1993 ◽  
Vol 49 (1) ◽  
pp. 55-62 ◽  
Author(s):  
V. A. Petržílka
Keyword(s):  
Radio Frequency ◽  
Cyclotron Resonance ◽  
Ion Cyclotron Resonance ◽  
Wave Polarization ◽  
Radial Transport ◽  
Magnetostatic Field ◽  
Frequency Wave ◽  
Ion Cyclotron ◽  
Radio Frequency Wave ◽  
Wave Induced

Expressions for wave-induced radial transport are derived, allowing simple estimates to be obtained. The transport is enhanced owing to the presence of a poloidal magnetostatic field and in the vicinity of ion-cyclotron resonance. The direction of the wave-induced transport also depends on the wave polarization.

Au-Ni and Rh Electroplated Coatings Evaluation for ITER Ion Cyclotron Resonance Heating Radio-Frequency Sliding Contacts

2018 ◽  
Vol 941 ◽  
pp. 1674-1679
Author(s):  
Zhao Xi Chen ◽  
Julien Hillairet ◽  
Viviane Turq ◽  
Yun Tao Song ◽  
Raphaël Laloo ◽  
...  
Keyword(s):  
Radio Frequency ◽  
Cyclotron Resonance ◽  
Large Scale ◽  
Electrical Contact ◽  
Thermal Ageing ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron ◽  
Diffusion Phenomena ◽  
Electrical Loads ◽  
Xrd Techniques

Within the large scale fusion experimental device ITER, Ion Cyclotron Resonance Heating (ICRH) system is one of the three heating systems which will supply total heating power of 20 MW (40-55 MHz) up to one hour operation. Radio-Frequency (RF) contacts are integrated within the antennas for assembly and operation considerations, which will face extremely harsh service conditions, including neutron irradiation, heavy electrical loads (RF current reaches up to 2 kA with a linear current density of 4.8 kA/m), high thermal loads and also long-duration vacuum baking at 250°C before each experimental plasma campaign. CuCrZr and 316L steel have been shown to be proper base candidate materials for ITER RF contact louvers and conductors respectively. However, in order to limit the wear and the diffusion phenomena at the RF contact as well as to reduce the contact resistance, functional protective layers should be developed. The aim of this work is to investigate Au-Ni and Rh functional layers, electroplated on CuCrZr and 316L respectively. The efficiency of the Au-Ni/Rh coated pairs was evaluated through thermal ageing diffusion tests, using EDS cross-section mapping and XRD techniques. Wear and electrical contact performances of the Au-Ni/Rh original and thermally aged pairs have also been deeply studied on a dedicated tribometer operated at ITER relevant conditions.

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