LIU Shilei1, 2 WANG Li1, 2 XU Zhongmin1 WANG Naxiu1 1. A new method to measure the parallelism error of synchrotron radiation from double-crystal monochromator[J]. Nuclear techniques, 2011, 34(6): 411-414.
LIU Shilei1, 2 WANG Li1, 2 XU Zhongmin1 WANG Naxiu1 1. A new method to measure the parallelism error of synchrotron radiation from double-crystal monochromator[J]. Nuclear techniques, 2011, 34(6): 411-414.DOI:
In order to measure the parallelism error of synchrotron radiation double-crystal monochromator off-line
a new method was developed at SSRF.A pencil beam interferometer improved with a cross phase plate is used to measure the parallelism error and carry out the principle experiment.This method overcomes the defects of autocollimator.It can measure the absolute parallelism of the two double crystals in two directions simultaneously and the theoretical measurement accuracy of pitch and roll is 0.89’’ and 1.79’’ in this experiment