IPAC2016 - List of Authors (Park, Y.J.)

Paper	Title	Page
THPMW012	The Fast Interlock Controller for High Power Pulse Modulator at PAL-XFEL	3561
	S.H. Kim, H.-S. Kang, K.H. Kim, S.J. Kwon, H.-S. Lee, S.S. Park, Y.J. Park PAL, Pohang, Kyungbuk, Republic of Korea I.S. Ko POSTECH, Pohang, Kyungbuk, Republic of Korea
	Funding: This work is supported by Ministry of Science, ICT(Information/Communication Technology) and Future Planning. The modulator control system for PAL-XFEL consists of a PLC unit (Programmable Logic Controller) and FPSCM (Fast Pulse Signal Conditioning Module). There are two kinds of interlock, which are dynamic and static interlocks categorized as analogue monitor and control signals, digital monitor and control signals. In case of dynamic interlocks, the internal interface of the PLC unit had to be modified due to operating within 10 ms time response from the interlock event. The fast pulse signal conditioning module is adopted for preconditioning the fast pulse and DC signals that inherently have high noise levels generated from a beam voltage, a beam current and EOLC current. Those EM (Electro-Magnetic) noises are generated by thyratron switching. The amplitude of the thyratron noise is large which causes the problem at the control devices, frequently. In this paper, the test results of the interlock control system will be described.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMW012
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THPMW024	Phase Tuning Results of the Waveguide Network System at Pal	3597
	K.H. Kim, S.H. Kim, H.-S. Lee, S.S. Park, Y.J. Park PAL, Pohang, Kyungbuk, Republic of Korea
	We report the results of the phase tuning of the waveguide network system with the C-clamp tool and the resonance frequency tuning for the SLAC energy doubler. The high power waveguide network which dividing and feeding the power to the four accelerating structures. The phase length is adjusted within ± 0.25 degrees with a transmission phase measuring method. The resonant frequency range for the SLAC energy doubler is 2856 MHz ± 5 kHz, but a target range is 2856 MHz ± 1 kHz. We measured the phase length and an amplitude with a vector network analyser. The test setup consists of a SLED, a waveguide network, directional couplers, phase stable cables. All components of the waveguide networks were manufactured at VITZRO TECH and tested at the accelerator tunnel in the Pohang Accelerator Laboratory (PAL).
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMW024
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Paper

Title

Page

The Fast Interlock Controller for High Power Pulse Modulator at PAL-XFEL

3561

S.H. Kim, H.-S. Kang, K.H. Kim, S.J. Kwon, H.-S. Lee, S.S. Park, Y.J. Park
PAL, Pohang, Kyungbuk, Republic of Korea
I.S. Ko
POSTECH, Pohang, Kyungbuk, Republic of Korea

Funding: This work is supported by Ministry of Science, ICT(Information/Communication Technology) and Future Planning.
The modulator control system for PAL-XFEL consists of a PLC unit (Programmable Logic Controller) and FPSCM (Fast Pulse Signal Conditioning Module). There are two kinds of interlock, which are dynamic and static interlocks categorized as analogue monitor and control signals, digital monitor and control signals. In case of dynamic interlocks, the internal interface of the PLC unit had to be modified due to operating within 10 ms time response from the interlock event. The fast pulse signal conditioning module is adopted for preconditioning the fast pulse and DC signals that inherently have high noise levels generated from a beam voltage, a beam current and EOLC current. Those EM (Electro-Magnetic) noises are generated by thyratron switching. The amplitude of the thyratron noise is large which causes the problem at the control devices, frequently. In this paper, the test results of the interlock control system will be described.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMW012

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPMW024

Phase Tuning Results of the Waveguide Network System at Pal

3597

K.H. Kim, S.H. Kim, H.-S. Lee, S.S. Park, Y.J. Park
PAL, Pohang, Kyungbuk, Republic of Korea

We report the results of the phase tuning of the waveguide network system with the C-clamp tool and the resonance frequency tuning for the SLAC energy doubler. The high power waveguide network which dividing and feeding the power to the four accelerating structures. The phase length is adjusted within ± 0.25 degrees with a transmission phase measuring method. The resonant frequency range for the SLAC energy doubler is 2856 MHz ± 5 kHz, but a target range is 2856 MHz ± 1 kHz. We measured the phase length and an amplitude with a vector network analyser. The test setup consists of a SLED, a waveguide network, directional couplers, phase stable cables. All components of the waveguide networks were manufactured at VITZRO TECH and tested at the accelerator tunnel in the Pohang Accelerator Laboratory (PAL).

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPMW024

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)