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@unpublished{kim:ibic2020-tupp27, author = {C. Kim and H.-S. Kang and G. Kim and I.S. Ko and J.H. Ko}, title = {{Monitor for Microbunching Instability in X-ray Free Electron Laser}}, booktitle = {Proc. IBIC'20}, language = {english}, intype = {presented at the}, series = {International Beam Instrumentation Conference}, number = {9}, venue = {Santos, Brazil}, publisher = {JACoW Publishing, Geneva, Switzerland}, month = {oct}, year = {2020}, note = {presented at IBIC2020 in Santos, Brazil, unpublished}, abstract = {The microbunching instability is an important issue in an X-ray Free Electron Laser (XFEL) because the intensity of the FEL can be reduced significantly when the microbunching instability is generated. In the X-ray Free Electron Laser of the Pohang Accelerator Laboratory (PAL-XFEL), a visible CCD camera was installed in the existing coherent radiation monitor (CRM) for the bunch length monitoring. The measurement result shows that the CCD camera can be used as a direct monitor to diagnose the microbunching instability and can be used to optimize the FEL lasing in the PAL-XFEL.}, }