IBIC2017 - List of Authors (Chen, H.J.)

Paper	Title	Page
WEPCC21	Beam Size Monitor Based on Multi-Silt Interferometer at SSRF	408
	B. Gao, H.J. Chen, J. Chen, Y.B. Leng, K.R. Ye SINAP, Shanghai, People's Republic of China
	Double-silt synchrotron radiation interferometer is a common and useful tool to measure transverse beam size around the world. In order to satisfy the requirement of high speed measurement and improve the accuracy of BSM (beam size monitor), multi-silt interferometers have been designed and tested at SSRF. Multi-silt mask pattern has characteristics of high flux throughput and high SNR of the interferogram, which is very useful at high-speed beam size measurement. This technique has a relative complex algorithm to deconvolve the result image and figure out the beam size. Principle of the multi-silt SR interferometer, mask design and experiment will be present detailed in this paper.
	Poster WEPCC21 [1.081 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WEPCC21
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TH2AB2	Bunch-by-Bunch Beam Length Measurement Using Two-Frequency System at SSRF	499
	H.J. Chen, L.W. Duan, B. Gao, L.W. Lai, Y.B. Leng SINAP, Shanghai, People's Republic of China N. Zhang SSRF, Shanghai, People's Republic of China
	A Two-frequency method has been implemented for bunch length measurement at Shanghai Synchrotron Radiation Facility (SSRF). It is based on the information from two harmonic frequencies of Flourier Transformation of longitudinal charge distribution. We select 500MHz and 3GHz as working frequency and the system consists of power splitters, band-pass filters and a mixer. Raw data are acquired by a digital oscilloscope and analyzed by MATLAB code. The system has been calibrated by Streak Camera in single-bunch experiment environment with bunch charge from 0.23nC to 6.05nC. The paper also shows bunch length synchronous oscillation phenomenon during injection period.
	Slides TH2AB2 [3.638 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TH2AB2
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

Beam Size Monitor Based on Multi-Silt Interferometer at SSRF

408

B. Gao, H.J. Chen, J. Chen, Y.B. Leng, K.R. Ye
SINAP, Shanghai, People's Republic of China

Double-silt synchrotron radiation interferometer is a common and useful tool to measure transverse beam size around the world. In order to satisfy the requirement of high speed measurement and improve the accuracy of BSM (beam size monitor), multi-silt interferometers have been designed and tested at SSRF. Multi-silt mask pattern has characteristics of high flux throughput and high SNR of the interferogram, which is very useful at high-speed beam size measurement. This technique has a relative complex algorithm to deconvolve the result image and figure out the beam size. Principle of the multi-silt SR interferometer, mask design and experiment will be present detailed in this paper.

Poster WEPCC21 [1.081 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-WEPCC21

Export •

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

TH2AB2

Bunch-by-Bunch Beam Length Measurement Using Two-Frequency System at SSRF

499

H.J. Chen, L.W. Duan, B. Gao, L.W. Lai, Y.B. Leng
SINAP, Shanghai, People's Republic of China
N. Zhang
SSRF, Shanghai, People's Republic of China

A Two-frequency method has been implemented for bunch length measurement at Shanghai Synchrotron Radiation Facility (SSRF). It is based on the information from two harmonic frequencies of Flourier Transformation of longitudinal charge distribution. We select 500MHz and 3GHz as working frequency and the system consists of power splitters, band-pass filters and a mixer. Raw data are acquired by a digital oscilloscope and analyzed by MATLAB code. The system has been calibrated by Streak Camera in single-bunch experiment environment with bunch charge from 0.23nC to 6.05nC. The paper also shows bunch length synchronous oscillation phenomenon during injection period.

Slides TH2AB2 [3.638 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IBIC2017-TH2AB2

Export •

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