Active control over carbon deposition on diagnostic components and in remote areas of ITER
Active control over carbon deposition on diagnostic components and in remote areas of ITER
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DOI：
10.1016/j.jnucmat.2010.12.146
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发表时间：
2011-10
影响因子：
3.1
通讯作者：
A. Litnovsky;V. Philipps;P. Wienhold;M. Matveeva;A. Pospieszczyk;G. Sergienko;O. Schmitz;U. Samm;H. Stoschus;C. Schulz;L. Marot;A. Romanyuk;G. D. Temmerman;M. Laengner;U. Breuer;A. Stärk
中科院分区：
文献类型：
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作者：
A. Litnovsky;V. Philipps;P. Wienhold;M. Matveeva;A. Pospieszczyk;G. Sergienko;O. Schmitz;U. Samm;H. Stoschus;C. Schulz;L. Marot;A. Romanyuk;G. D. Temmerman;M. Laengner;U. Breuer;A. Stärk
在未来，像ITER这样的聚变设备中，杂质的沉积可能会发生在远离等离子体的区域，以及光学诊断的敏感部件上，如镜子和窗户。在偏远地区沉积可能会导致氚滞留，因此是一个安全问题。沉积在光学部件上将严重恶化其光学性能，可能导致相应诊断系统的关闭。因此，对沉积进行主动控制是非常可取的。本文概述了在TEXTER托卡马克上进行的主动控制碳沉积的实验。一个诊断导管的原型暴露在TEXTOR的刮除层等离子体中，其中应用了几种技术来减轻位于该原型中的诊断镜上的碳沉积。诊断镜表面沉积碳的完全抑制是通过在诊断镜导管内充入氚气体来实现的。
In future fusion devices like ITER deposition of impurities will likely occur in areas, remote from plasma and on the sensitive components of optical diagnostics, like mirrors and windows. Deposition in remote areas may lead to the tritium retention and therefore represent a safety issue. Deposition on optical components will severely deteriorate their optical properties potentially leading to the shutdown of the respective diagnostic systems. An active control over deposition is therefore highly desirable. The paper contains an overview of experiments on active control over carbon deposition undertaken in TEXTOR tokamak. A prototype of diagnostic duct was exposed in the scrape-off layer plasmas of TEXTOR where several techniques were applied to mitigate carbon deposition on diagnostic mirrors located inside this prototype. The complete suppression of carbon deposition on the surface of diagnostic mirror was achieved by feeding the deuterium gas inside the diagnostic duct.