Gas puff imaging on the TCV tokamak

被引：10

作者：

Offeddu, N. ^{[1
]}

Wuethrich, C. ^{[1
]}

Han, W. ^{[2
]}

Theiler, C. ^{[1
]}

Golfinopoulos, T. ^{[2
]}

Terry, J. L. ^{[2
]}

Marmar, E. ^{[2
]}

Galperti, C. ^{[1
]}

Andrebe, Y. ^{[1
]}

Duval, B. P. ^{[1
]}

Bertizzolo, R. ^{[1
]}

Clement, A. ^{[1
]}

Fevrier, O. ^{[1
]}

Elaian, H. ^{[1
]}

Gonczy, D. ^{[1
]}

Landis, J. D. ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Swiss Plasma Ctr SPC, CH-1015 Lausanne, Switzerland

[2] MIT, Plasma Sci & Fus Ctr PSFC, Cambridge, MA 02139 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2022年 / 93卷 / 12期

基金：

瑞士国家科学基金会;

关键词：

INJECTION SYSTEM; EDGE PLASMA; TURBULENCE; FUSION; NSTX;

D O I：

10.1063/5.0126398

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We present the design and operation of a suite of Gas Puff Imaging (GPI) diagnostic systems installed on the Tokamak a Configuration Variable (TCV) for the study of turbulence in the plasma edge and Scrape-Off-Layer (SOL). These systems provide the unique ability to simultaneously collect poloidal 2D images of plasma dynamics at the outboard midplane, around the X-point, in both the High-Field Side (HFS) and Low-Field Side (LFS) SOL, and in the divertor region. We describe and characterize an innovative control system for deuterium and helium gas injection, which is becoming the default standard for the other gas injections at TCV. Extensive pre-design studies and the different detection systems are presented, including an array of avalanche photodiodes and a high-speed CMOS camera. First results with spatial and time resolutions of up to asymptotic to 2 mm and 0.5 mu s, respectively, are described, and future upgrades of the GPI diagnostics for TCV are discussed. (C) 2022 Author(s).

引用

页数：14

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