Operation of PAL-XFEL LLRF
Jinyul Hu, Juho Hong, KwangHoon Kim, Seonghoon Jung, Donghyun Na, Yong, Jung Park, Sang-Hee Kim, Soung-soo Park, Chang-Ki Min, Heung-Sik Kang,, Heung-Soo Lee
TL;DR
This paper discusses the operation, challenges, and solutions related to the Low-Level Radio Frequency (LLRF) system at PAL-XFEL, highlighting its contribution to stable FEL operation over four years.
Contribution
It provides an overview of the operational experience, issues encountered, and resolutions implemented for the LLRF and SSA systems at PAL-XFEL.
Findings
LLRF and SSA systems achieved over 99% availability.
Rare issues caused minimal delays but could halt operation.
Problems have been identified and resolved.
Abstract
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 with over 99% availability. The LLRF and SSA systems showed some problems in rare cases. The delay caused by the problem is very small, but PAL-XFEL can stop working. Some issues have been identified and resolved. We want to share the experience.
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Taxonomy
TopicsParticle Accelerators and Free-Electron Lasers · Superconducting Materials and Applications · Advanced X-ray Imaging Techniques