Performance Analysis of the ITER Plasma Position Reflectometry (PPR) Ex-vessel Transmission Lines

被引：2
|
作者：
Martinez-Fernandez, J. [1 ]
Simonetto, A. [2 ]
Cappa, A. [1 ]
Rincon, M. E. [1 ]
Cabrera, S. [1 ]
Ramos, F. J. [1 ]
机构：
[1] Ctr Invest Energet Medioambientales & Tecnol CIEM, Lab Nacl Fus, Av Complutense 40, Madrid 28040, Spain
[2] CNR, Ist Fis Plasma Piero Caldirola, Via Cozzi 53, I-20125 Milan, Italy
来源：
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES | 2018年 / 39卷 / 03期
关键词：
Reflectometry; ITER diagnostics; Circular corrugated waveguides; CORRUGATED WAVE-GUIDES; DESIGN;
D O I：
10.1007/s10762-017-0451-5
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
As the design of the ITER Plasma Position Reflectometry (PPR) diagnostic progresses, some segments of the transmission line have become fully specified and estimations of their performance can already be obtained. This work presents the calculations carried out for the longest section of the PPR, which is in final state of design and will be the main contributor to the total system performance. Considering the 88.9 mm circular corrugated waveguide (CCWG) that was previously chosen, signal degradation calculations have been performed. Different degradation sources have been studied: ohmic attenuation losses for CCWG; mode conversion losses for gaps, mitre bends, waveguide sag and different types of misalignments; reflection and absorption losses due to microwave windows and coupling losses to free space Gaussian beam. Contributions from all these sources have been integrated to give a global estimation of performance in the transmission lines segments under study.
引用
收藏
页码：273 / 287
页数：15
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