Abstract
Monochromator plays a key role in the performance of a synchrotron beamline, it determines a beamline’s energy range, bandwidth, flux, focal sizes, coherence, etc., and it has been the limiting optic in a beamline for a long time. Many efforts have been made in order to improve the performance of the monochromators around the world. The HEPS project will need a batch of monochromators and some of them are built in house, many technical problems needed to be solved. A double crystal monochromator prototype has been developed, tested, then modified by improving the mechanical stability, switching to mechanism based on flexures to drive the second crystal. A quick EXAFS Channel-Cut crystal monochromator was designed for the HEPS XAFS beamline, driven by torque motor and closed loop controller. The design aspects and some test results of both monochromators will be introduced. Results show that the design is feasible and meet the requirements of both beamlines.
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