IPAC2016 - List of Authors (Bian, T.J.)

Paper	Title	Page
TUPMW001	SPPC Parameter Choice and Lattice Design	1400
	F. Su Institute of High Energy Physics (IHEP), People's Republic of China S. Bai, T.J. Bian, Y.K. Chen, J. Gao, J.Y. Tang, D. Wang, Y. Wang IHEP, Beijing, People's Republic of China
	In this paper we showed a systematic method of appropriate parameter choice for a circular pp collider by using analytical expression of beam-beam tune shift limit started from given design goal and technical limitations. Based on parameters scan, we obtain a set of parameters for SPPC with different circumferences like 54km, 78km or 100km and different energies like 70TeV or 100TeV. We also showed the first version of SPPC lattice although it needs lots of work to do and to be optimized.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMW001
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOR009	Cepc Partial Double Ring Lattice Design	3785
	F. Su Institute of High Energy Physics (IHEP), People's Republic of China S. Bai, T.J. Bian, Z. Duan, J. Gao, H. Geng, D. Wang, Y. Wang, M. Xiao, G. Xu, Y. Zhang IHEP, Beijing, People's Republic of China
	In this paper, we introduced the layout and lattice design of Circular-Electron-Positron-Collider (CEPC) partial double ring (PDR) scheme. The baseline design of CEPC is a single beam-pipe electron positron collider, which has to adopt pretzel orbit scheme. And it is not suitable to serve as a high luminosity Z factory. If we choose partial double ring scheme, we can get a higher luminosity with lower power and be suitable to serve as a high luminosity Z factory. In this paper, we discussed the details of CEPC partial double ring lattice design and showed the dynamic aperture study and optimization.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOR009
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOR010	CEPC Parameter Choice and Partial Double Ring Design	3788
	D. Wang, S. Bai, T.J. Bian, X. Cui, Z. Duan, J. Gao, H. Geng, Y.Y. Guo, Q. Qin, N. Wang, Y. Wang, M. Xiao, J.Y. Zhai, C. Zhang, Y. Zhang IHEP, Beijing, People's Republic of China W. Chou Fermilab, Batavia, Illinois, USA F. Su Institute of High Energy Physics (IHEP), People's Republic of China
	Funding: Work supported by the National Foundation of Natural Sciences (11505198 and 11575218) In order to avoid the pretzel orbit, CEPC is proposed to use partial double ring scheme in CDR. Based on crab waist scheme, we hope to either increase the luminosity with same beam power as Pre-CDR, or reduce the beam power while keeping the same luminosity in Pre-CDR. FFS with crab sextupoles has been developed and the arc lattice was redesigned to acheive the lower emittance for crab waist scheme.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOR010
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOR011	Design study of CEPC Alternating Magnetic Field Booster	3791
	T.J. Bian, S. Bai, X. Cui, J. Gao, D. Wang, Y. Wang, M. Xiao, C. Zhang IHEP, Beijing, People's Republic of China Y. Cai SLAC, Menlo Park, California, USA M. Koratzinos DPNC, Genève, Switzerland F. Su Institute of High Energy Physics (IHEP), People's Republic of China
	CEPC is next generation circular collider proposed by China. The design of the full energy booster ring of the CEPC is especially challenging. The ejected beam energy is 120GeV but the injected beam only 6GeV. In a conventional approach, the low magnetic field of the main dipole magnets creates problems. We propose to operate the booster ring as a large wiggler at low beam energies and as a normal ring at high energies to avoid the problem of very low dipole magnet fields.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOR011
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

THPOR012	Dynamic Aperture Study of the CEPC Main Ring with Interaction Region	3795
	Y. Wang, S. Bai, T.J. Bian, J. Gao, H. Geng, D. Wang, Y. Zhang IHEP, Beijing, People's Republic of China F. Su Institute of High Energy Physics (IHEP), People's Republic of China
	CEPC is a Circular Electron and Positron Collider proposed by China to mainly study the Higgs boson. In order to achieve factory luminosity, a strong focusing system and low-emittance are required. A momentum acceptance as large as 2\% is also required to get a reasonable beam lifetime. This is one of the key issues of the CEPC accelerator physics. In this paper, the optics design of the interaction region and the optimization of dynamic aperture for the whole ring (single ring scheme) will be presented.
DOI •	reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOR012
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

SPPC Parameter Choice and Lattice Design

1400

F. Su
Institute of High Energy Physics (IHEP), People's Republic of China
S. Bai, T.J. Bian, Y.K. Chen, J. Gao, J.Y. Tang, D. Wang, Y. Wang
IHEP, Beijing, People's Republic of China

In this paper we showed a systematic method of appropriate parameter choice for a circular pp collider by using analytical expression of beam-beam tune shift limit started from given design goal and technical limitations. Based on parameters scan, we obtain a set of parameters for SPPC with different circumferences like 54km, 78km or 100km and different energies like 70TeV or 100TeV. We also showed the first version of SPPC lattice although it needs lots of work to do and to be optimized.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-TUPMW001

Export •

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

THPOR009

Cepc Partial Double Ring Lattice Design

3785

F. Su
Institute of High Energy Physics (IHEP), People's Republic of China
S. Bai, T.J. Bian, Z. Duan, J. Gao, H. Geng, D. Wang, Y. Wang, M. Xiao, G. Xu, Y. Zhang
IHEP, Beijing, People's Republic of China

In this paper, we introduced the layout and lattice design of Circular-Electron-Positron-Collider (CEPC) partial double ring (PDR) scheme. The baseline design of CEPC is a single beam-pipe electron positron collider, which has to adopt pretzel orbit scheme. And it is not suitable to serve as a high luminosity Z factory. If we choose partial double ring scheme, we can get a higher luminosity with lower power and be suitable to serve as a high luminosity Z factory. In this paper, we discussed the details of CEPC partial double ring lattice design and showed the dynamic aperture study and optimization.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOR009

Export •

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

THPOR010

CEPC Parameter Choice and Partial Double Ring Design

3788

D. Wang, S. Bai, T.J. Bian, X. Cui, Z. Duan, J. Gao, H. Geng, Y.Y. Guo, Q. Qin, N. Wang, Y. Wang, M. Xiao, J.Y. Zhai, C. Zhang, Y. Zhang
IHEP, Beijing, People's Republic of China
W. Chou
Fermilab, Batavia, Illinois, USA
F. Su
Institute of High Energy Physics (IHEP), People's Republic of China

Funding: Work supported by the National Foundation of Natural Sciences (11505198 and 11575218)
In order to avoid the pretzel orbit, CEPC is proposed to use partial double ring scheme in CDR. Based on crab waist scheme, we hope to either increase the luminosity with same beam power as Pre-CDR, or reduce the beam power while keeping the same luminosity in Pre-CDR. FFS with crab sextupoles has been developed and the arc lattice was redesigned to acheive the lower emittance for crab waist scheme.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOR010

Export •

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

THPOR011

Design study of CEPC Alternating Magnetic Field Booster

3791

T.J. Bian, S. Bai, X. Cui, J. Gao, D. Wang, Y. Wang, M. Xiao, C. Zhang
IHEP, Beijing, People's Republic of China
Y. Cai
SLAC, Menlo Park, California, USA
M. Koratzinos
DPNC, Genève, Switzerland
F. Su
Institute of High Energy Physics (IHEP), People's Republic of China

CEPC is next generation circular collider proposed by China. The design of the full energy booster ring of the CEPC is especially challenging. The ejected beam energy is 120GeV but the injected beam only 6GeV. In a conventional approach, the low magnetic field of the main dipole magnets creates problems. We propose to operate the booster ring as a large wiggler at low beam energies and as a normal ring at high energies to avoid the problem of very low dipole magnet fields.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOR011

Export •

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

THPOR012

Dynamic Aperture Study of the CEPC Main Ring with Interaction Region

3795

Y. Wang, S. Bai, T.J. Bian, J. Gao, H. Geng, D. Wang, Y. Zhang
IHEP, Beijing, People's Republic of China
F. Su
Institute of High Energy Physics (IHEP), People's Republic of China

CEPC is a Circular Electron and Positron Collider proposed by China to mainly study the Higgs boson. In order to achieve factory luminosity, a strong focusing system and low-emittance are required. A momentum acceptance as large as 2\% is also required to get a reasonable beam lifetime. This is one of the key issues of the CEPC accelerator physics. In this paper, the optics design of the interaction region and the optimization of dynamic aperture for the whole ring (single ring scheme) will be presented.

DOI •

reference for this paper ※ DOI:10.18429/JACoW-IPAC2016-THPOR012

Export •

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