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水流量热法是强流离子束束功率测量常用的方法,由于测量仪表安装位置的问题,EAST(Experimental Advanced Superconducting Tokamak)全超导托卡马克中性束注入水流热量累积测量系统中存在不可忽略的误差。本文结合水流热量累计测量系统的原理分析其误差的来源,针对其中由于采集时间有限和真空室内外热传递损失三部分误差来源进行了详细的分析和修正,将沉积功率百分比由73.72%提高到86.27%,修正结果显著。最终将修正方法嵌入到现有的沉积功率计算系统中,实时地进行误差修正,从而得到更精确的沉积在热承载部件上的功率沉积,为功率沉积分布和中性化效率的精确测量提供依据。
Water flow calorimetry is a commonly used method for power measurement of high-intensity ion beams. Due to the installation location of measuring instruments, there is an important issue in the experimental superconducting Tokamak neutral beam injection heat flow cumulative measurement system of EAST (Experimental Advanced Superconducting Tokamak) The error. In this paper, the source of the error is analyzed based on the principle of the total water flow measurement system. According to the detailed analysis and correction of the error sources due to the limited collection time and the heat transfer loss in the vacuum chamber, the percentage of deposition power is increased from 73.72% to 86.27 %, The correction results are significant. Finally, the correction method is embedded in the existing depositional power calculation system to carry out error correction in real time to obtain more accurate deposition of power on the heat-bearing component, which provides a basis for accurate measurement of power deposition distribution and neutralization efficiency .