TY - JOUR
T1 - Performance Analysis of the ITER Plasma Position Reflectometry (PPR) Ex-vessel Transmission Lines
AU - Martínez-Fernández, J.
AU - Simonetto, A.
AU - Cappa,
AU - Rincón, M. E.
AU - Cabrera, S.
AU - Ramos, F. J.
N1 - Publisher Copyright:
© 2017, Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2018/3/1
Y1 - 2018/3/1
N2 - 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.
AB - 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.
KW - Circular corrugated waveguides
KW - ITER diagnostics
KW - Reflectometry
UR - http://www.scopus.com/inward/record.url?scp=85033479791&partnerID=8YFLogxK
U2 - 10.1007/s10762-017-0451-5
DO - 10.1007/s10762-017-0451-5
M3 - Artículo
AN - SCOPUS:85033479791
SN - 1866-6892
VL - 39
SP - 273
EP - 287
JO - Journal of Infrared, Millimeter, and Terahertz Waves
JF - Journal of Infrared, Millimeter, and Terahertz Waves
IS - 3
ER -