Application of Frequency Map Analysis to the BEPCⅡ Lattice

JIAO Yi; ZHOU De-Min; WANG Jiu-Qing; QIN Qing; XU Gang; FANG Shou-Xian

Chinese Physics C> 2007, Vol. 31> Issue(6) : 586-592

Application of Frequency Map Analysis to the BEPCⅡ Lattice

Institute of High Energy Physics, CAS, Beijing 100049, China

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Abstract：
The frequency map analysis (FMA) method is systematically applied to the lattice of the BEPCⅡ storage ring for the first time in this paper. We compute characteristic parameters of the lattice with the Accelerator Toolbox (AT) code, in which the FMA method is imbedded, and compare the results with those of MAD and SAD codes. The lattices of the BEPCⅡ collision and injection modes are analyzed and optimized using FMA with the RF cavity and radiation on. Both on- and off-momentum frequency maps are studied to have a complete picture of dynamics. The synchro-betatron resonance is found to have large effect on the beam dynamics.
[1] GUO Yun-Jun , HE Kang-Lin . Muon Identification Using the Efficiencies Ratio Method at BESⅡ. Chinese Physics C, 2007, 31(11): 1050-1055.
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JIAO Yi, ZHOU De-Min, WANG Jiu-Qing, QIN Qing, XU Gang and FANG Shou-Xian. Application of Frequency Map Analysis to the BEPCⅡ Lattice[J]. Chinese Physics C, 2007, 31(6): 586-592.

JIAO Yi, ZHOU De-Min, WANG Jiu-Qing, QIN Qing, XU Gang and FANG Shou-Xian. Application of Frequency Map Analysis to the BEPCⅡ Lattice[J]. Chinese Physics C, 2007, 31(6): 586-592. shu

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Received: 2006-09-20
Revised: 2006-10-20

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沈阳化工大学材料科学与工程学院沈阳 110142

Application of Frequency Map Analysis to the BEPCⅡ Lattice

Corresponding author: JIAO Yi,

Institute of High Energy Physics, CAS, Beijing 100049, China

Received Date: 2006-09-20
Accepted Date: 2006-10-20
Available Online: 2007-06-05

Abstract: The frequency map analysis (FMA) method is systematically applied to the lattice of the BEPCⅡ storage ring for the first time in this paper. We compute characteristic parameters of the lattice with the Accelerator Toolbox (AT) code, in which the FMA method is imbedded, and compare the results with those of MAD and SAD codes. The lattices of the BEPCⅡ collision and injection modes are analyzed and optimized using FMA with the RF cavity and radiation on. Both on- and off-momentum frequency maps are studied to have a complete picture of dynamics. The synchro-betatron resonance is found to have large effect on the beam dynamics.