Automatic transmission optimization of the plane-grating monochromator using collimated light

摘要

It is essential to perform plane-grating monochromator transmission optimization for synchrotron radiation beamlines. Usually, The optimization is time-consuming. In this contribution, an automatic transmission optimization method for the plane-grating monochromator using collimated light based on the Differential Evolution (DE) algorithm is introduced. This method can quickly find the optimal solution. To test this method, a program developed using C++ is verified by optimizing the efficiency of a plane-grating monochromator with a 2000 lines/mm lamellar grating at soft X-ray region. Furthermore, the transmission optimizations of most of the PGM using lamellar gratings in soft x-ray region are performed.