SAP2014 - List of Authors (Ji, D.)

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.

THPMH1	Latest Design and Optimization of the PEPX-type Lattice for HEPS	110
	Y. Jiao, D. Ji, G. Xu IHEP, Beijing, People's Republic of China
	Recently the so-called diffraction limited storage ring (DLSR) with emittance around or below 100 pm.rad has attracted worldwide interest and R&D efforts. It has been proposed to build a DLSR in Beijing, named High Energy Photon Source (HEPS). In this paper, we present a latest PEPX-type lattice design of the HEPS storage ring with beam energy of 6 (or 5) GeV and horizontal natural emittance of 88 (or 61) pm.rad. Nonlinear dynamics optimization has been done to ensure an efficient injection and a long enough Touschek lifetime.

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.

THPMH1

Latest Design and Optimization of the PEPX-type Lattice for HEPS

110

Y. Jiao, D. Ji, G. Xu
IHEP, Beijing, People's Republic of China

Recently the so-called diffraction limited storage ring (DLSR) with emittance around or below 100 pm.rad has attracted worldwide interest and R&D efforts. It has been proposed to build a DLSR in Beijing, named High Energy Photon Source (HEPS). In this paper, we present a latest PEPX-type lattice design of the HEPS storage ring with beam energy of 6 (or 5) GeV and horizontal natural emittance of 88 (or 61) pm.rad. Nonlinear dynamics optimization has been done to ensure an efficient injection and a long enough Touschek lifetime.