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Operation of PAL-XFEL LLRF

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arxiv 1909.12091 v2 pith:FF56Y7DS submitted 2019-09-26 physics.acc-ph

Operation of PAL-XFEL LLRF

Jinyul Hu , Juho Hong , KwangHoon Kim , Seonghoon Jung , Donghyun Na , Yong Jung Park , Sang-Hee Kim , Soung-soo Park
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Chang-Ki Min Heung-Sik Kang Heung-Soo Lee
This is my paper
classification physics.acc-ph
keywords pal-xfelllrfbeenoperationsomesystemsacceleratoravailability
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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