Jinyul Hu
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View article: Operation of PAL-XFEL LLRF
Operation of PAL-XFEL LLRF Open
PAL-XFEL (Pohang Accelerator Laboratory X-ray Free Electron Laser) started RF conditioning in October 2015 and has been operating reliably for ~ 4 years. The machine's LLRF and SSA systems contributed to the stable operation of PAL-XFEL wi…
View article: Construction and Commissioning of PAL-XFEL Facility
Construction and Commissioning of PAL-XFEL Facility Open
The construction of Pohang Accelerator Laboratory X-ray Free-Electron Laser (PAL-XFEL), a 0.1-nm hard X-ray free-electron laser (FEL) facility based on a 10-GeV S-band linear accelerator (LINAC), is achieved in Pohang, Korea by the end of …
View article: LLRF Development for PAL-XFEL
LLRF Development for PAL-XFEL Open
PAL-XFEL construction is completed. Now, beam commissioning is ongoing after RF conditioning. The LLRF and SSA systems installed and in normal operation are presented. Those structures, features, characteristics, and performances are descr…
View article: PAL-XFEL Linac RF System
PAL-XFEL Linac RF System Open
The PAL-XFEL hard X-ray linac has a 716 m long gallery and tunnel for 10 GeV. Forty nine modulators are necessary in the hard X-ray gallery for an X-band linearizer, an S-band RF gun, two S-band deflectors and 45 S-band klystrons for accel…
View article: Development of an X-Band Linearizer System for PAL-XFEL
Development of an X-Band Linearizer System for PAL-XFEL Open
We developed an X-band RF system for the linear bunch compression in the PAL-XFEL. We installed a SLAC X-band accelerating structure on a precise mover stage and applied RF power by using a SLAC XL-4 11.424 GHz klystron driven by an invert…