SAP2014 - List of Authors (Zhang, Y.)

Paper	Title	Page
WEPH02	Beam Optimization in Parasitic Mode of BEPCII during R Measurement	29
	D. Ji, Q. Qin, C.H. Yu, Y. Zhang IHEP, Beijing, People's Republic of China
	The Beijing Electron Positron Collider II (BEPCII) operated for R measurement from 2013 November to 2014 February in parasitic mode. During R measurement, beam energy shifted from 1.89GeV to 2.3GeV in three month. Meanwhile, in parasitic mode, 8 beamlines including 3 from wigglers could also operate for synchrotron radiation (SR) experiments. Frequent energy change in such wide range and wigglers effect made beam optimization a hard task. This paper will describe the main progresses on the beam optimization of the BEPCII during R measurement in the field of accelerator physics.

THAMH2	Review of Crosstalk between Beam-beam Interaction and Lattice Nonlinearity in e⁺e⁻ Colliders	94
	Y. Zhang IHEP, Beijing, People's Republic of China D. Zhou KEK, Ibaraki, Japan
	According to the traditional knowledge, it is believed that the nonlinearity in the arc would not reduce the beam-beam performance, since the beam-beam force is dominated in the beam core region while the lattice nonlinearity is dominated in the beam halo region. However in the recent few e⁺e⁻ storage ring colliders, it has been shown that the lattice nonlinearity may be important to the luminosity performance. In this paper, we'll try to review the related story in DAΦNE, and its upgrade with crab waist scheme, KEKB, BEPCII, and Super-KEKB.

Paper

Title

Page

Beam Optimization in Parasitic Mode of BEPCII during R Measurement

29

D. Ji, Q. Qin, C.H. Yu, Y. Zhang
IHEP, Beijing, People's Republic of China

The Beijing Electron Positron Collider II (BEPCII) operated for R measurement from 2013 November to 2014 February in parasitic mode. During R measurement, beam energy shifted from 1.89GeV to 2.3GeV in three month. Meanwhile, in parasitic mode, 8 beamlines including 3 from wigglers could also operate for synchrotron radiation (SR) experiments. Frequent energy change in such wide range and wigglers effect made beam optimization a hard task. This paper will describe the main progresses on the beam optimization of the BEPCII during R measurement in the field of accelerator physics.

THAMH2

Review of Crosstalk between Beam-beam Interaction and Lattice Nonlinearity in e⁺e⁻ Colliders

94

Y. Zhang
IHEP, Beijing, People's Republic of China
D. Zhou
KEK, Ibaraki, Japan

According to the traditional knowledge, it is believed that the nonlinearity in the arc would not reduce the beam-beam performance, since the beam-beam force is dominated in the beam core region while the lattice nonlinearity is dominated in the beam halo region. However in the recent few e⁺e⁻ storage ring colliders, it has been shown that the lattice nonlinearity may be important to the luminosity performance. In this paper, we'll try to review the related story in DAΦNE, and its upgrade with crab waist scheme, KEKB, BEPCII, and Super-KEKB.