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@inproceedings{lu:medsi2023-weppp050, author = {Y.S. Lu and H. Liang and Z.K. Liu and D.S. Shen and Z. Sun and Y. Yang and S. Zhang and Y.S. Zhang}, % author = {Y.S. Lu and H. Liang and Z.K. Liu and D.S. Shen and Z. Sun and Y. Yang and others}, % author = {Y.S. Lu and others}, title = {{Quick scanning Channel-Cut crystal monochromator for millisecond time resolution EXAFS at HEPS}}, % booktitle = {Proc. MEDSI'23}, booktitle = {Proc. 12th Int. Conf. Mech. Eng. Design Synchrotron Radiat. Equip. Instrum. (MEDSI'23)}, eventdate = {2023-11-06/2023-11-10}, pages = {229--232}, paper = {WEPPP050}, language = {english}, keywords = {controls, synchrotron, simulation, vacuum, synchrotron-radiation}, venue = {Beijing, China}, series = {International Conference on Mechanical Engineering Design of Synchrotron Radiation Equipment and Instrumentation}, number = {12}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {07}, year = {2024}, issn = {2673-5520}, isbn = {978-3-95450-250-9}, doi = {10.18429/JACoW-MEDSI2023-WEPPP050}, url = {https://jacow.org/medsi2023/papers/weppp050.pdf}, abstract = {{The design and capabilities of a Quick scanning Channel-Cut monochromator (QCCM) for HEPS are presented. The quick scan and step scan are realized by a torque motor directly driven Bragg axis, controlled by a servo controller. This design allows easy and remote control of the oscillation frequency and angular range, providing comprehensive control of QXAFS measure-ments. The cryogenically cooled Si (311) and Si(111) crystals, which extends the energy range from 4.8 keV-45 keV. The dynamic analysis verifies the rationality of the mechanical structure design. The device was fabri-cated and tested, results show an oscillation frequency up to 50Hz with a range of 0.8°, and a resolution of 0.2 arcsecond in step scan mode. This device demonstrates the feasibility of large range quick scan and step scan by a single servo control system.}}, }