Modelling of fast electron Bremsstrahlung emission during LHCD with a 2-D relativistic Fokker-Planck code

1996 ◽  
Author(s):  
Y. Peysson ◽  
R. Arslanbekov ◽  
Y. Baranov ◽  
G. T. Hoang ◽  
X. Litaudon ◽  
...  
Keyword(s):  
Fast Electron ◽  
Electron Bremsstrahlung ◽  
Bremsstrahlung Emission ◽  
Fokker Planck

A Real-Time Hard X-Ray Tomographic System Designed for HL-2A Fast Electron Bremsstrahlung Radiation

2020 ◽  
Author(s):  
Chen Yuan ◽  
Jun Wu
Keyword(s):  
Real Time ◽  
Fast Electron ◽  
High Speed ◽  
Lower Hybrid ◽  
Processing Unit ◽  
Bremsstrahlung Radiation ◽  
X Ray ◽  
The Real ◽  
Electron Bremsstrahlung ◽  
Plasma State

Abstract A real-time hard X-ray (HXR) tomographic system is designed for HL-2A tokamak, which is dedicated to the real-time tomography of fast electron bremsstrahlung radiation during the lower hybrid (LH) driven mode within the energy range of 20keV to 200keV. This system has realized the investigation of HXR energy from 12 different chords on the equatorial plane of the reaction region. The spatial and temporal resolutions of the system are 2cm and 10ms, separately. HXR detection is accomplished by a self-designed detector array, with a structure of 12 arc arranged cadmium telluride (CdTe) semiconductors and their corresponding collimators. The real-time HXR acquisition and processing is achieved by the main electronic system, which is comprised of a high speed analog-to-digital module and a high performance signal processing unit. Due to high HXR flux and the real-time demand in measurement, the HXR tomography is accomplished by several customized digital processing algorithms based on FPGA logic resources, such as the digital real-time spectrum measurement, the trapezoidal shaper, the pile up filter, and the baseline restorer, etc. This system has been proved to be qualified as a dependable platform of fast electron bremsstrahlung radiation research during LH mode on HL-2A, which provides indispensable parameters for plasma state during fusion reaction.

Hard X-Ray Camera System Planned for HL-2A Tokamak FAST Electron Bremsstrahlung Tomography

2014 ◽  
Vol 65 (3) ◽  
pp. 366-371 ◽  
Author(s):  
Y. P. Zhang ◽  
D. Mazon ◽  
Yi Liu ◽  
G. L. Yuan ◽  
H. B. Xu ◽  
...  
Keyword(s):  
Fast Electron ◽  
Camera System ◽  
X Ray ◽  
Electron Bremsstrahlung

scholarly journals Measurements of the fast electron bremsstrahlung during lower hybrid current drive in the HL-2A tokamak

AIP Advances ◽  
2019 ◽  
Vol 9 (8) ◽  
pp. 085019 ◽  
Author(s):  
Y. P. Zhang ◽  
D. Mazon ◽  
Y. Peysson ◽  
P. Malard ◽  
P. F. Zhang ◽  
...  
Keyword(s):  
Fast Electron ◽  
Current Drive ◽  
Lower Hybrid ◽  
Electron Bremsstrahlung ◽  
Lower Hybrid Current Drive

scholarly journals Electron‐Electron Bremsstrahlung Emission and the Inference of Electron Flux Spectra in Solar Flares

2007 ◽  
Vol 670 (1) ◽  
pp. 857-861 ◽  
Author(s):  
Eduard P. Kontar ◽  
A. Gordon Emslie ◽  
Anna Maria Massone ◽  
Michele Piana ◽  
John C. Brown ◽  
...  
Keyword(s):  
Solar Flares ◽  
Electron Flux ◽  
Electron Bremsstrahlung ◽  
Bremsstrahlung Emission

A Fokker-Planck Calculation of Bremsstrahlung Emission During Fast Wave Current Drive

1991 ◽  
Vol 30 (Part 1, No. 9A) ◽  
pp. 2092-2098
Author(s):  
Toshinori Michishita ◽  
Hisato Kawashima
Keyword(s):  
Current Drive ◽  
Fast Wave ◽  
Bremsstrahlung Emission ◽  
Fokker Planck
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