Assessment of measurement performance for a low field side IDTT plasma position reflectometry system

被引：10
作者：
da Silva, F. [1 ]
Ferreira, J. [1 ]
Santos, J. [1 ]
Heuraux, S. [2 ]
Ricardo, E. [1 ]
De Masi, G. [3 ]
Tudisco, O. [4 ]
Cavazzana, R. [3 ]
D'Arcangelo, O. [4 ]
机构：
[1] Univ Lisbon, Inst Super Tecn, Inst Plasmas Fusao Nucl, P-1049001 Lisbon, Portugal
[2] Univ Lorraine, Inst Jean Lamour, CNRS, UMR 7198, F-5401 Nancy, France
[3] Consorzio RFX, I-35127 Padua, Italy
[4] Associazione EURATOM, ENEACR Frascati, I-00044 Frascati, Italy
来源：
FUSION ENGINEERING AND DESIGN | 2021年 / 168卷
关键词：
FDTD; IDTT; Reflectometry; Numerical simulation; DEMO; ELECTRON-DENSITY PROFILE; MICROWAVE REFLECTOMETRY; SCATTERING; SHAPE; MODE;
D O I：
10.1016/j.fusengdes.2021.112405
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The Italian Divertor Test Tokamak (IDTT) facility will study advanced exhaust solutions applicable to DEMO. This new machine also opens the possibility to test and validate relevant non-magnetic control diagnostics in support of a DEMO design implementation. Reflectometry, compatible with a full grade reactor implementation, has been proposed as a source of real-time (RT) plasma position and shape measurements for control purposes, in replacement or complement of standard magnetic measurements, to ensure reliability and safety on the machine. Additionally, such a system can be useful to obtain the characteristics of edge turbulence, useful for Neoclassical Tearing Mode (NTM) control or to improve the efficiency of other diagnostics as Collective Thomson Scattering (CTS). This new control technique based on multiple, poloidally distributed, non-magnetic measurements, must be tested, in all of its aspects, before it can be fully implemented in future fusion reactors. IDTT will be one of the best candidates to implement and build a knowledge database of nonstandard reflectometry (away from the equatorial plane) that will be needed on DEMO and is currently unavailable. The performance of three Ordinary mode (O-mode) Plasma Position Reflectometers (PPR) at the Lower Field Side (LFS) on IDTT is assessed using the two-dimensional (2D) full-wave Finite-Difference Time-Domain (FDTD) code, REFMULF, in two of the foreseen IDTT plasma scenarios: 5MA Single Null (SN) and Double Null (DN) configurations.
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页数：11
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