New diagnostics for density measurement on Frascati Tokamak upgrade

被引：0
|
作者：
Tudisco, O. [1 ]
Canton, A. [2 ]
Innocente, P. [2 ]
Mazzotta, C. [1 ]
Petrov, V. G. [3 ]
Petrov, A. A. [3 ]
Avino, F. [4 ]
Rocchi, G. [1 ]
机构：
[1] EURATOM, CR Frascati, ENEA, I-00044 Rome, Italy
[2] Ass Euratom ENEA CNR, Consorzio RFX, I-35127 Padua, Italy
[3] Troitsk Inst Innovat & Fus Res, State Res Ctr Russian Federat, Moscow Reg, Russia
[4] Ecole Polytech, Ctr Rech Phys Plasmas, Lausanne, Switzerland
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2013年 / 720卷
关键词：
Interferometry; Plasma density; Refractometry; Plasma diagnostic; Fusion device diagnostic; INFRARED-LASER INTERFEROMETER; CO2-LASER POLARIMETER; SYSTEM; PROFILE; TIME;
D O I：
10.1016/j.nima.2012.12.045
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
In FTU, density profile is measured with two new diagnostics: a CO2/CO scanning interferometer and a time-of-flight radar (denominated refractometer). The first, using two scanning beams, can provide a plasma density profile every 62.5 mu s. Two lasers (CO2/CO) are employed for compensation of mechanical vibration of optical components. The scanning component is a small mirror (phi=5 mm) tilting at 8 kHz. The oscillation is cancelled out by a second reflection on this mirror. The time-of-flight refractometer is a two-frequency radar (51.5 GHz and 60.5 GHz) which measures the plasma refractive index from the delay time of an RF pulse that goes through the plasma and is reflected back by the metallic vacuum vessel. The line density and the profile peaking by both diagnostics are in good agreement (C) 2012 Elsevier B.V. All rights reserved.
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收藏
页码：20 / 22
页数：3
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