100 km CEPC parameters and lattice design*

8th International Particle Accelerator Conference

Wang, D.^1 ; Gao, J.^1 ; Yu, C.H.^1 ; Zhang, Y.^1 ; Wang, Y.W.^1 ; Su, F.^1 ; Zhai, J.Y.^1 ; Bai, S.^1 ; Geng, H.P.^1 ; Bian, T.J.^1 ; Wang, N.^1 ; Cui, X.H.^1 ; Zhang, C.^1 ; Qin, Q.^1

IHEP, Beijing

100049, China^1

关键词: Beam power;    Conceptual design reports;    Double-ring configuration;    Dynamic aperture;    Energy acceptances;    Final focus;    Lattice design;    Steering committee;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/874/1/012009/pdf
DOI  :  10.1088/1742-6596/874/1/012009

来源: IOP

【 摘 要 】

The 100km double ring configuration with shared superconducting RF system has been defined as baseline by the circular electron positron collider (CEPC) steering committee. Based on this new scheme, we will get higher luminosity for Higgs (+170%) keeping the beam power in preliminary conceptual design report (Pre-CDR) or to reduce the beam power (19 MW) while keeping same luminosity. CEPC will be compatible with W and Z experiment. The luminosity for Z is designed at the level of 1035cm-2s-1. The requirement for the energy acceptance of Higgs has been reduced to 1.5% by enlarging the ring to 100 km. The optics of arc and final focus system (FFS) with crab sextupoles has been designed, and also some primary dynamic aperture (DA) results were introduced.