Quartz microbalance: a time resolved diagnostic to measure material deposition in JET
Quartz microbalance: a time resolved diagnostic to measure material deposition in JET
复制标题
石英微天平：测量 JET 中材料沉积的时间分辨诊断
DOI：
10.1016/s0920-3796(03)00365-x
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
V. Philipps
中科院分区：
文献类型：
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作者：
H. Esser;G. Neill;P. Coad;G. Matthews;D. Jolović;D. Wilson;M. Freisinger;V. Philipps
为了促进氚滞留和壁腐蚀等关键聚变问题的解决，需要更多聚变装置偏远区域碳沉积的测量数据。这些数据对于理解和模拟局部和全球粒子通量以及对 ITER 等未来设备进行预测至关重要。 2000 年春季，开始开发新的诊断石英微量天平 (QMB)，以定量、原位和时间分辨（≤1 秒）测量 JET 子偏滤器区域中的材料沉积。质量和温度特性的校准工作在 FZ-Jülich 进行，层质量灵敏度为 γmass=7.5×10−9g/Hz，温度灵敏度为 γtemp(100°C)≈0.09°C/Hz。商用 QMB 技术适应了 JET 的严格限制和要求。 2002 年 3 月实施后，在 C5 活动（约 1000 个等离子体脉冲）期间证明了可靠且成功的操作。给出了第一个测量示例。
To promote solutions of key fusion problems like tritium retention and wall erosion, more measured data of carbon deposition in remote areas of fusion devices are needed. These data are essential to understand and model local and global particle fluxes and to make predictions for future devices like ITER. In spring 2000 the development of a new diagnostic, quartz microbalance (QMB), was started to measure quantitatively, in situ and time resolved (≤1 s) the material deposition in the sub divertor region of JET. Calibration work of mass and temperature characteristic was done at FZ-Jülich giving a layer mass sensitivity of Γmass=7.5×10−9g/Hz and a temperature sensitivity of Γtemp(100°C)≈0.09°C/Hz. The commercially available QMB technique was adapted to the harsh constraints and requirements of JET. After implementation in March 2002 reliable and successful operation was demonstrated during the C5 campaign (∼1000 plasma pulses). First examples of measurements are presented.