SAP2017 - List of Authors (Zhang, J.R.)

Paper	Title	Page
MOPH22	Primary Design of 4 a S-band Linac using Slotted Iris Structure for Hom Damping	76
	J. Pang, S. Chen, X. He CAEP/IFP, Mainyang, Sichuan, People's Republic of China S. Pei, H. Shi, J.R. Zhang IHEP, Beijing, People's Republic of China
	A S-band LINAC with the operating frequency of 2856MHz and beam current of 4 A was designed for flash X-ray radiography for hydrodynamic test. The optimization of the parameters of the LINAC was processed to achieve the minimum beam radius and the proper energy efficiency. For the purpose of reducing the beam orbits offset at the exit of LINAC, a slotted iris accelerating structure would be employed to suppress the transverse Higher Order Modes (HOMs) by cutting four radial slots in the iris to couple the HOMs to SiC loads. In this paper, we present the design of the LINAC and the results of beam dynamic analysis.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-MOPH22
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MOPH26	CEPC Linac Design and Error Study	89
	C. Meng, Y.L. Chi, X.P. Li, G. Pei, S. Pei, D. Wang, J.R. Zhang IHEP, Beijing, People's Republic of China
	Circular Electron-Positron Collider (CEPC) is a 100 km ring e⁺ e⁻ collider for a Higgs factory, including the double ring for collider and the injector. The injector is composed of the linac and booster. The linac of CEPC is a normal conducting S-band linac with frequency in 2856.75 MHz and provide electron and positron beam at an energy up to 10 GeV with bunch charge in 1.0 nC and repetition frequency in 100 Hz. The linac scheme will be detailed discussed. The beam dynamic results with short-range Wakefields and detailed error study including misalignment errors and field errors also be presented.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-MOPH26
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WEAH4	Bunch Length Measurement System for 500 kV Photocathode DC Gun at IHEP	172
	O. Xiao Institute of High Energy Physics (IHEP), People's Republic of China X.P. Li, D.R. Sun, X. Wang, J.R. Zhang IHEP, Beijing, People's Republic of China
	In September of 2011, a 500 kV photocathode DC gun was proposed for FEL-ERL two purpose facility at Insti-tute of High Energy Physics(IHEP). So far, the whole system has been installed and the preliminary high voltage conditioning has been carried out. Since the photocathode response time influence the beam quality, the bunch length measurement system is required, which consist of a solenoid, a 1.3 GHz standing wave deflecting cavity, a slit and a YAG screen. In this paper, the design of a deflecting cavity with TM210 mode is presented. In addition, the beam dynamics study of the bunch measurement system is performed using ASTRA and the layout of the bunch measurement system is determined. The bunch length in simulation is in good agreement with theoretical calculation.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-WEAH4
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Paper

Title

Page

Primary Design of 4 a S-band Linac using Slotted Iris Structure for Hom Damping

76

J. Pang, S. Chen, X. He
CAEP/IFP, Mainyang, Sichuan, People's Republic of China
S. Pei, H. Shi, J.R. Zhang
IHEP, Beijing, People's Republic of China

A S-band LINAC with the operating frequency of 2856MHz and beam current of 4 A was designed for flash X-ray radiography for hydrodynamic test. The optimization of the parameters of the LINAC was processed to achieve the minimum beam radius and the proper energy efficiency. For the purpose of reducing the beam orbits offset at the exit of LINAC, a slotted iris accelerating structure would be employed to suppress the transverse Higher Order Modes (HOMs) by cutting four radial slots in the iris to couple the HOMs to SiC loads. In this paper, we present the design of the LINAC and the results of beam dynamic analysis.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-MOPH22

Export •

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

MOPH26

CEPC Linac Design and Error Study

89

C. Meng, Y.L. Chi, X.P. Li, G. Pei, S. Pei, D. Wang, J.R. Zhang
IHEP, Beijing, People's Republic of China

Circular Electron-Positron Collider (CEPC) is a 100 km ring e⁺ e⁻ collider for a Higgs factory, including the double ring for collider and the injector. The injector is composed of the linac and booster. The linac of CEPC is a normal conducting S-band linac with frequency in 2856.75 MHz and provide electron and positron beam at an energy up to 10 GeV with bunch charge in 1.0 nC and repetition frequency in 100 Hz. The linac scheme will be detailed discussed. The beam dynamic results with short-range Wakefields and detailed error study including misalignment errors and field errors also be presented.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-MOPH26

Export •

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

WEAH4

Bunch Length Measurement System for 500 kV Photocathode DC Gun at IHEP

172

O. Xiao
Institute of High Energy Physics (IHEP), People's Republic of China
X.P. Li, D.R. Sun, X. Wang, J.R. Zhang
IHEP, Beijing, People's Republic of China

In September of 2011, a 500 kV photocathode DC gun was proposed for FEL-ERL two purpose facility at Insti-tute of High Energy Physics(IHEP). So far, the whole system has been installed and the preliminary high voltage conditioning has been carried out. Since the photocathode response time influence the beam quality, the bunch length measurement system is required, which consist of a solenoid, a 1.3 GHz standing wave deflecting cavity, a slit and a YAG screen. In this paper, the design of a deflecting cavity with TM210 mode is presented. In addition, the beam dynamics study of the bunch measurement system is performed using ASTRA and the layout of the bunch measurement system is determined. The bunch length in simulation is in good agreement with theoretical calculation.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-SAP2017-WEAH4

Export •

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