两维位置灵敏探测器的能量和动量响应函数刻度

The calibration on the energy and momentum response functions of multi-channel (e,2e) spectrometer

用弹性散射对多通道(e,2e)谱仪两维位置灵敏探测器的能量和动量响应函数进行了刻度,从位置灵敏探测器输出的两维位置信息中获得了弹性散射的能谱和角度谱,估计了在当前实验条件下的能量分辨和角度分辨。同时,我们用正交多项式的最小二乘法拟合得到了谱仪单路的能量和动量响应函数。

The energy and momentum response functions of two-dimensional Position-Sensitive detector (PDS) of multi-channel (e,2e) spectrometer have been calibrated using elastically scattered electron at seven different incident energy and eight different azimuthal angles. The energy and azimuthal angular spectra for elastic scattering are extracted from the two-dimensional position information of the PSD output. The energy and angular resolutions are evaluated. Meanwhile, the response functions are obtained by the least-square fitting of orthogonal polynomials.