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电荷交换复合光谱(Charge e Xchange Recombination Spectroscopy,CXRS)诊断系统主要用于等离子体旋转速度和离子温度的测量。CXRS诊断的另外一个重要应用是通过测量光谱的绝对强度来确定杂质离子的密度,因此需要对系统进行绝对强度标定。在实验前通过精确校准过且各个波长强度已知的积分球光源对系统进行初步的标定;在实验过程中又利用托卡马克装置中等离子体自身产生的轫致辐射对系统的强度标定进行了进一步的检验。通过比较轫致辐射强度的实验测量值和理论计算值,可以发现两种方法得到的结果虽然存在一定的误差,但是它们的趋势是一致的。实验结果表明,利用轫致辐射进行绝对强度标定是可行的。
Charge e Xchange Recombination Spectroscopy (CXRS) diagnostic system is mainly used for the measurement of plasma spin speed and ion temperature. Another important application of CXRS diagnostics is the determination of the density of impurity ions by measuring the absolute intensity of the spectrum, so the absolute intensity calibration of the system is required. Before the experiment, the system was calibrated by the integrating sphere light source which has been accurately calibrated and each wavelength intensity was known. In the experiment, the intensity calibration of the system was performed by using the bremsstrahlung generated by the plasma in the tokamak device Further test. By comparing experimental and measured values of the bremsstrahlung, we can find that although the results obtained by the two methods have certain errors, their trends are consistent. Experimental results show that the use of bremsstrahlung absolute intensity calibration is feasible.