Collective Thomson scattering in non-equilibrium laser produced two-stream plasmas

2020 ◽  
Vol 27 (10) ◽  
pp. 103104
Author(s):  
K. Sakai ◽  
S. Isayama ◽  
N. Bolouki ◽  
M. S. Habibi ◽  
Y. L. Liu ◽  
...  
Keyword(s):  
Thomson Scattering ◽  
Collective Thomson Scattering ◽  
Non Equilibrium

scholarly journals Mitigation of EC breakdown in the gyrotron transmission line of the ITER Collective Thomson Scattering diagnostic via a Split Biased Waveguide

2019 ◽  
Vol 14 (11) ◽  
pp. C11009-C11009 ◽  
Author(s):  
A.W. Larsen ◽  
S.B. Korsholm ◽  
B. Gonçalves ◽  
H.E. Gutierrez ◽  
E. Henriques ◽  
...  
Keyword(s):  
Transmission Line ◽  
Thomson Scattering ◽  
Collective Thomson Scattering ◽  
Thomson Scattering Diagnostic

Ion temperature measurements in a tokamak by collective Thomson scattering

1991 ◽  
Vol 69 (4) ◽  
pp. 1993-1998 ◽  
Author(s):  
M. R. Siegrist ◽  
R. Behn ◽  
D. Dicken ◽  
B. P. Duval ◽  
J. Hackmann ◽  
...  
Keyword(s):  
Thomson Scattering ◽  
Temperature Measurements ◽  
Ion Temperature ◽  
Collective Thomson Scattering

RAMI analysis of the Collective Thomson Scattering system front-end – Part2 – reliability block diagram analysis

2021 ◽  
Vol 171 ◽  
pp. 112593
Author(s):  
Diogo Rechena ◽  
Virgínia Infante ◽  
Elsa Henriques ◽  
Søren B. Korsholm ◽  
Axel W. Larsen ◽  
...  
Keyword(s):  
Block Diagram ◽  
Thomson Scattering ◽  
Scattering System ◽  
Reliability Block Diagram ◽  
Front End ◽  
Collective Thomson Scattering ◽  
Diagram Analysis

scholarly journals Implementation of collective Thomson scattering on the TEXTOR tokamak for energetic ion measurements

2001 ◽  
Vol 72 (1) ◽  
pp. 1148-1150 ◽  
Author(s):  
L. Porte ◽  
H. Bindslev ◽  
F. Hoekzema ◽  
J. Machuzak ◽  
P. Woskov ◽  
...  
Keyword(s):  
Thomson Scattering ◽  
Collective Thomson Scattering

scholarly journals Neutronics analysis of the ITER Collective Thomson Scattering system

2018 ◽  
Vol 134 ◽  
pp. 22-28 ◽  
Author(s):  
A. Lopes ◽  
R. Luís ◽  
E. Klinkby ◽  
E. Nonbøl ◽  
M. Jessen ◽  
...  
Keyword(s):  
Thomson Scattering ◽  
Scattering System ◽  
Collective Thomson Scattering

Assessment of shutdown dose rates in the ITER Collective Thomson Scattering system and in equatorial port plug 12

2021 ◽  
Vol 16 (12) ◽  
pp. C12001
Author(s):  
A. Chambon ◽  
R. Luís ◽  
E. Klinkby ◽  
Y. Nietiadi ◽  
D. Rechena ◽  
...  
Keyword(s):  
Velocity Distribution Function ◽  
Thomson Scattering ◽  
Point Of View ◽  
Alpha Particles ◽  
Dose Rates ◽  
Statistical Fluctuations ◽  
Design Changes ◽  
Hands On ◽  
One Step ◽  
Collective Thomson Scattering

Abstract The ITER Collective Thomson Scattering (CTS) system will be the main diagnostic responsible for measuring the velocity distribution function of fusion-born alpha particles in the plasma. As the CTS diagnostic is integrated in the equatorial port plug 12 (drawer 3), with direct apertures to the port interspace where maintenance hands-on operation will be carried out, it is essential to assess the shutdown dose rates (SDDR) in these maintenance areas. In this work, the D1S-UNED3.1.4 Monte-Carlo transport code, based on the implementation of the direct-one-step methodology in MCNP5 v1.60, was used to estimate the dose rate level 12 days (106 s) after shutdown in the port interspace. The results show that the CTS system does not contribute significantly to the SDDR in the area where hands-on maintenance is foreseen with contribution to dose rates less than 1 µSv/h. This is consistent with previous estimates, although with the most recent model of the CTS design there is a slight increase of the SDDR values. This deviation can be attributed to design changes and improved shielding modelling and/or most importantly, to statistical fluctuations of the D1S simulations. From a neutronics point of view, the increase in the SDDR falls within the range of the statistical fluctuations, and the design is still compliant with the radiation safety ALARA principle aiming at minimizing radiation doses, and there is no requirement for further design optimizations.

scholarly journals Development of Collective Thomson Scattering Diagnostic for Bulk and Fast Ions in the Large Helical Device

2011 ◽  
Vol 6 ◽  
pp. 2402068-2402068 ◽  
Author(s):  
Masaki NISHIURA ◽  
Shin KUBO ◽  
Kenji TANAKA ◽  
Namiko TAMURA ◽  
Takashi SHIMOZUMA ◽  
...  
Keyword(s):  
Thomson Scattering ◽  
Fast Ions ◽  
Collective Thomson Scattering ◽  
Thomson Scattering Diagnostic
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