Design and upgrades of the TCV fast ion loss detector.

IF 1.7 4区 工程技术 Q3 INSTRUMENTS & INSTRUMENTATION
J Poley-Sanjuán, A Clément, A Fasoli, A N Karpushov, A Jansen Van Vuuren, B P Duval, M Toussaint, M Vallar, P Lavanchy, Y Andrebe
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引用次数: 0

Abstract

The Tokamak à Configuration Variable has a unique Fast Ion Loss Detector (FILD) that allows the simultaneous measurement of co- and counter-current fast-ion losses in forward or reverse magnetic field. Recently, multiple novel upgrades have been implemented that further extended its capabilities. The optical system throughput was improved by adding anti-reflective coatings to the internal components, in direct view of the camera, and installing a low wavelength filter to reduce unwanted stray light. The mechanical rigidity was increased by adding additional contact points closer to the heat shield, which significantly reduced the system vibration amplitude during operation. The entrance slit pinholes were reduced from 1 to 0.8 mm, obtaining an energy resolution improvement of over 40% for only an ∼20% signal level decrease. Finally, a rotary system now permits the FILD head angle to be scanned from ±30° on a shot-to-shot basis. These upgrades, described herein, greatly increase the functionality of the FILD diagnostic.

TCV快速离子损耗检测仪的设计与升级。
托卡马克配置变量具有独特的快速离子损耗检测器(field),允许同时测量正向或反向磁场中的共电流和逆流快速离子损耗。最近,已经实施了多种新颖的升级,进一步扩展了其功能。光学系统的吞吐量通过在相机直接可见的内部组件上添加抗反射涂层来提高,并安装低波长滤光片来减少不必要的杂散光。通过在靠近隔热板的地方增加额外的接触点,提高了机械刚度,从而大大降低了系统在运行过程中的振动幅度。入口狭缝针孔从1毫米减少到0.8毫米,在信号电平仅降低约20%的情况下,能量分辨率提高了40%以上。最后,一个旋转系统现在允许在镜头对镜头的基础上从±30°扫描field头角度。这里描述的这些升级极大地增加了field诊断的功能。
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
Review of Scientific Instruments
Review of Scientific Instruments 工程技术-物理:应用
CiteScore
3.00
自引率
12.50%
发文量
758
审稿时长
2.6 months
期刊介绍: Review of Scientific Instruments, is committed to the publication of advances in scientific instruments, apparatuses, and techniques. RSI seeks to meet the needs of engineers and scientists in physics, chemistry, and the life sciences.
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