Physical design study of the CEPC booster

Chuang Zhang

doi:10.1088/1674-1137/40/9/097004

Chinese Physics C> 2016, Vol. 40> Issue(9) : 097004 DOI: 10.1088/1674-1137/40/9/097004

Physical design study of the CEPC booster

Chuang Zhang

1.
Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

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Abstract：
A physical design study of the Circular Electron-Positron Collider (CEPC) booster is reported. The booster provides 120 GeV electron and positron beams for the CEPC collider with top-up injection. The booster is mounted above the collider in the same tunnel. To save cost, the energy of the linac injector for the booster is chosen as 6 GeV, corresponding to a magnetic field of 30.7 Gs. In this paper, the booster lattice is described and optimization of the cell length is discussed. A novel scheme of bypass near the detector of the collider is designed. The extremely low magnetic field caused by low injection energy is studied, and a new ideal of wiggling bands is proposed to mitigate the low-field problem. Beam transfer and injection from the linac to the booster are considered.
- higgs factory ,
- injector ,
- booster ,
- bypass ,
- wiggling bend

References

[1]	The CEPC-SPPC Study Group, CEPC-SPPC Preliminary Conceptual Design Report, IHEPIHEP CEPC CEPC-DR 2015-01, March 2015
[2]	BEPCⅡ Team, Performance and Prospects of BEPCⅡ, in Proc. IPAC2012 (May 2012), p1030
[3]	H. Grote, C. Iselin, The MAD Program User's Reference Manual, CERN/SL/90-13(AP), 1990
[4]	LEP Design Report, CERN-LEP/TH/83-29, June 1983

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Chuang Zhang. Physical design study of the CEPC booster[J]. Chinese Physics C, 2016, 40(9): 097004. doi: 10.1088/1674-1137/40/9/097004

Chuang Zhang. Physical design study of the CEPC booster[J]. Chinese Physics C, 2016, 40(9): 097004. doi: 10.1088/1674-1137/40/9/097004 shu

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Received: 2016-03-22
Revised: 2016-05-04

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通讯作者: 陈斌, [email protected]

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Physical design study of the CEPC booster

1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2016-03-22

Accepted Date: 2016-05-04

Available Online: 2016-09-05

Abstract: A physical design study of the Circular Electron-Positron Collider (CEPC) booster is reported. The booster provides 120 GeV electron and positron beams for the CEPC collider with top-up injection. The booster is mounted above the collider in the same tunnel. To save cost, the energy of the linac injector for the booster is chosen as 6 GeV, corresponding to a magnetic field of 30.7 Gs. In this paper, the booster lattice is described and optimization of the cell length is discussed. A novel scheme of bypass near the detector of the collider is designed. The extremely low magnetic field caused by low injection energy is studied, and a new ideal of wiggling bands is proposed to mitigate the low-field problem. Beam transfer and injection from the linac to the booster are considered.

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