System level design of the Tangential visible and infrared viewing system for DTT

IF 2 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Fusion Engineering and Design Pub Date : 2025-03-09 DOI:10.1016/j.fusengdes.2025.114906

S. Vives , M.-H. Aumeunier , X. Courtois , L. Dubus , M. Alonzo , M. Iafrati

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引用次数: 0

Abstract

The Divertor Tokamak Test facility (DTT) is a superconducting tokamak under construction in Frascati (Italy). Its main goal is the study of strategies for the management of plasma exhaust in a reactor-grade tokamak plasmas, to support ITER operation and the design of DEMO. It will incorporate a visible and infrared viewing system dedicated to machine protection and plasma physics. This system, called Tangential Viewing System (TVS), consists of 6 Line-of-Sight (LoS) located in 3 sectors in equatorial ports. Each LoS provides a wide-angle view of 44° x 60°, with the first wall being the main area of surveillance.

This paper details the work on TVS during its initial concept development, focusing on defining requirements, verifying preliminary performance, and developing potential design solutions.

Each LoS is made of a Front Mirrors Unit collecting and transferring the light outside the vacuum vessel through a sapphire window. To optimize the performance in both channels, the visible and infrared beams are separated behind the window by a large dichroic. Then in each channel, an objective lenses creates a collimated beam which is propagated by an optical relay system up to the detector. In terms of the performance, the preliminary assessment of the spatial resolution and coverage is described. The spatial coverage of the outer and inner walls is evaluated to 97 % and 30 % respectively, which allows the first wall protection.

查看原文本刊更多论文

数字地面电视切向可见光和红外观测系统的系统级设计

导流托卡马克试验装置（DTT）是位于意大利弗拉斯卡蒂的超导托卡马克试验装置。其主要目标是研究反应堆级托卡马克等离子体中等离子体排气管理策略，以支持ITER的运行和DEMO的设计。它将包括一个专用于机器保护和等离子体物理的可见光和红外观测系统。这个系统被称为切向观测系统（TVS），由6个视距（LoS）组成，位于赤道港口的3个扇区。每个LoS提供44°x 60°的广角视图，第一面墙是主要监视区域。本文详细介绍了TVS在其初始概念开发期间的工作，重点是定义需求，验证初步性能，以及开发潜在的设计解决方案。每个LoS由一个前镜单元组成，通过蓝宝石窗口收集和转移真空容器外的光。为了优化两个通道的性能，可见光和红外光束在窗口后面被一个大的二色性分开。然后，在每个通道中，物镜产生一束准直光束，该光束通过光学中继系统向上传播到探测器。在性能方面，对空间分辨率和覆盖范围进行了初步评价。外墙和内墙的空间覆盖率分别评估为97%和30%，允许第一墙保护。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Fusion Engineering and Design 工程技术-核科学技术

CiteScore

3.50

自引率

23.50%

发文量

275

审稿时长

3.8 months

期刊介绍： The journal accepts papers about experiments (both plasma and technology), theory, models, methods, and designs in areas relating to technology, engineering, and applied science aspects of magnetic and inertial fusion energy. Specific areas of interest include: MFE and IFE design studies for experiments and reactors; fusion nuclear technologies and materials, including blankets and shields; analysis of reactor plasmas; plasma heating, fuelling, and vacuum systems; drivers, targets, and special technologies for IFE, controls and diagnostics; fuel cycle analysis and tritium reprocessing and handling; operations and remote maintenance of reactors; safety, decommissioning, and waste management; economic and environmental analysis of components and systems.