IBIC2021 - List of Authors (Chung, M.)

Paper	Title	Page
MOPP28	Experimental Test of 8-Channel-Stripline BPM for Measuring the Momentum Spread of the Electron Beam at Injector Test Facility of Pohang Accelerator Laboratory	115
	C.K. Sung, M. Chung, S.Y. Kim, B.K. Shin UNIST, Ulsan, Republic of Korea C. Kim, I.H. Nam PAL, Pohang, Republic of Korea
	A stripline beam position monitor has been developed with 8 feedthroughs in order to non-destructively measure the momentum spread of an beam. The beam momentum spread causes the variation of transverse beam width at a dispersive section and can be detected by the multipole moment based analysis of the beam-induced electromagnetic field. The feasibility of such a device has been tested with electron beam generated in the beamline of Injector Test Facility (ITF) at Pohang Accelerator Laboratory (PAL). The result of beam test will be presented and the future plan for an application to bunch compressors at X-ray Free Electron Laser (XFEL) of PAL will be followed.
	Poster MOPP28 [1.513 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2021-MOPP28
About •	paper received ※ 08 September 2021 paper accepted ※ 15 September 2021 issue date ※ 17 October 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

TUPP03	Particle and Photon Beam Measurements Based on Vibrating Wire	189
	S.G. Arutunian, G.S. Harutyunyan, E.G. Lazareva, A.V. Margaryan ANSL, Yerevan, Armenia M. Chung, D.H. Kwak UNIST, Ulsan, Republic of Korea
	The instrumentation introduced herein is based on high-quality vibrating wire resonator, in which the excitation of wire oscillation is made through the interaction of the wire current with a permanent magnetic field. The high sensitivity of the oscillation frequency to the wire temperature allows the resonator to be used for measuring charged-particle/X-ray/laser/neutron beam profiles with wide dynamic range. The beam flux falling on the wire increases its temperature from fractions of mK to hundreds of degrees. Another application method is to use the vibrating wire as a moving target, in which signals created at beam interaction with the wire are measured synchronously with the wire oscillation frequency. This method allows to effectively separate the background signals. Also, the well-defined (in space) and stable (in time) form of the wire oscillation allows the vibrating wire to be used directly as a miniature scanner for measuring thin beams. The latter two methods enable a significant reduction in scanning time compared to the original thermal-based method.
	Poster TUPP03 [1.146 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2021-TUPP03
About •	paper received ※ 01 September 2021 paper accepted ※ 26 October 2021 issue date ※ 12 November 2021
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Experimental Test of 8-Channel-Stripline BPM for Measuring the Momentum Spread of the Electron Beam at Injector Test Facility of Pohang Accelerator Laboratory

115

C.K. Sung, M. Chung, S.Y. Kim, B.K. Shin
UNIST, Ulsan, Republic of Korea
C. Kim, I.H. Nam
PAL, Pohang, Republic of Korea

A stripline beam position monitor has been developed with 8 feedthroughs in order to non-destructively measure the momentum spread of an beam. The beam momentum spread causes the variation of transverse beam width at a dispersive section and can be detected by the multipole moment based analysis of the beam-induced electromagnetic field. The feasibility of such a device has been tested with electron beam generated in the beamline of Injector Test Facility (ITF) at Pohang Accelerator Laboratory (PAL). The result of beam test will be presented and the future plan for an application to bunch compressors at X-ray Free Electron Laser (XFEL) of PAL will be followed.

Poster MOPP28 [1.513 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2021-MOPP28

About •

paper received ※ 08 September 2021 paper accepted ※ 15 September 2021 issue date ※ 17 October 2021

Export •

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

TUPP03

Particle and Photon Beam Measurements Based on Vibrating Wire

189

S.G. Arutunian, G.S. Harutyunyan, E.G. Lazareva, A.V. Margaryan
ANSL, Yerevan, Armenia
M. Chung, D.H. Kwak
UNIST, Ulsan, Republic of Korea

The instrumentation introduced herein is based on high-quality vibrating wire resonator, in which the excitation of wire oscillation is made through the interaction of the wire current with a permanent magnetic field. The high sensitivity of the oscillation frequency to the wire temperature allows the resonator to be used for measuring charged-particle/X-ray/laser/neutron beam profiles with wide dynamic range. The beam flux falling on the wire increases its temperature from fractions of mK to hundreds of degrees. Another application method is to use the vibrating wire as a moving target, in which signals created at beam interaction with the wire are measured synchronously with the wire oscillation frequency. This method allows to effectively separate the background signals. Also, the well-defined (in space) and stable (in time) form of the wire oscillation allows the vibrating wire to be used directly as a miniature scanner for measuring thin beams. The latter two methods enable a significant reduction in scanning time compared to the original thermal-based method.

Poster TUPP03 [1.146 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2021-TUPP03

About •

paper received ※ 01 September 2021 paper accepted ※ 26 October 2021 issue date ※ 12 November 2021

Export •

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