| Paper | Title | Page |
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| WEPOR004 | Fast Orbit Feedback System at the Pls-Ii Storage Ring | 2667 |
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Funding: This work is supported by the Ministry of science, ICT and Future Planning, Korea. The transverse position of the electron beam in the Pohang Light Source-II (PLS-II) is stabilized by the global orbit feedback system. Currently, 2 Hz slow orbit feedback (SOFB) system is operating, and 1 kHz fast orbit feedback (FOFB) system is installed recently. This FOFB system is consists of 96 electron beam position monitors (BPMs), 48 horizontal fast correctors, 48 vertical fast correctors and VME control system. We present the design and implementation of the FOFB system and its test result. Analysis through the simulation is presented and future improvement is discussed |
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| THPMW011 | Magnet Power Supplies Performance at the PLS-II Storage Ring | 3558 |
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Funding: This work is supported by the Ministry of science, ICT and Future Planning, Korea. Magnet power supplies(MPS) are operating unipolar(bending, main-quadrupole, sextupole and septum) and bipolar(slow corrector, fast corrector, aux-quadrupole and skew) at the PLS-II storage ring(SR). Unipolar MPSs maintain stability, and bipolar MPSs maintain stability, have best resolution performance total operation region including zero-crossing during beam operation. Slow and fast corrector MPSs for beam correction have good step response characteristics. In this paper, we present the improve activity and performance of the PLS-II SR MPS. |
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| THPMY028 | Technical Overview of the PAL-XFEL Conventional Facility | 3715 |
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| Pohang Accelerator Laboratory (PAL) has finished construction of a 1,110m long 10GeV X-ray free electron laser (XFEL) linear accelerator building in FY2015. In order to secure high-sensitive of XFEL accelerating devices, more advanced and well proven technologies were adopted in the design of the building. These are the ground improvement underneath the tunnel and tunnel structure itself against the possible ground deformation, air conditioning system to maintain the temperature and humidity in the tolerable ranges and architectural zoning. In this paper we describe the features of design and construction of the XFEL accelerator building. | ||
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| THPMY029 | Technical Overview of the PAL-XFEL Low-Conductivity Water Cooling System | 3718 |
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| Pohang Accelerator Laboratory (PAL) started operation of an X-ray Free Electron Laser (XFEL) based on 10GeV linear accelerator in FY2015. For accurate temperature control of the various XFEL accelerator devices, a low-conductivity water (LCW) cooling system were installed. The LCW pump station generates LCW controlling the temperature variation within ±0.1°C. The LCW is supplied to klystrons including modulators and various control devices. On the other hand, the precision temperature controlled water to minimize temperature variation down to ±0.02°C. This water is supplied to accelerating columns, wave guide and SLED. Therefore, this paper shows the design, construction and operation of the LCW cooling system. | ||
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