IPAC2011 - List of Authors (Lu, W.)

Paper	Title	Page
TUPS090	Operation Status of SECRAL at IMP	1750
	W. Lu, Y. Cao Graduate School of the Chinese Academy of Sciences, Beijing, People's Republic of China Y.C. Feng, X.H. Guo, W. Lu, L.T. Sun, D. Xie, X.Z. Zhang, H.W. Zhao IMP, Lanzhou, People's Republic of China
	SECRAL (Superconducting ECR ion source with Advanced design in Lanzhou) is a fully superconducting ECR ion source built in 2005 with an innovative solenoid-inside-sextupole structure. Since then it has delivered many highly-charged ion beams for HIRFL (Heavy Ion Research Facility in Lanzhou) at IMP (Institute of Modern Physics), such as Xe²⁷⁺，Kr¹⁹⁺，Bi³⁶⁺ and Ni¹⁹⁺, and its on-line operating time increases year by year. By January 2011, the operation time of SECRAL has totaled up to 5700 hours. The increasing demand for intensive highly-charged ion beams has lead to the continuous enhancement of the SECRAL. To meet the requirement for stable highly-charged metallic ion beams, double-frequency of 18 GHz + 24 GHz heating with an off-axis oven had been carried out in 2010. 60-80 euA of Bi³⁶⁺ were produced at microwave power of about 2 kW and had been delivered continuously to HIRFL for about 10 days without any breakdowns. A number of improvements were planned to further improve the long-term stability of metallic ion beams.

WEPZ023	Results from Plasma Wakefield Acceleration Experiments at FACET	2814
	S.Z. Li, C.I. Clarke, R.J. England, J.T. Frederico, S.J. Gessner, M.J. Hogan, R.K. Jobe, M.D. Litos, D.R. Walz SLAC, Menlo Park, California, USA E. Adli University of Oslo, Oslo, Norway W. An, C.E. Clayton, C. Joshi, W. Lu, K.A. Marsh, W.B. Mori, S. Tochitsky UCLA, Los Angeles, California, USA P. Muggli USC, Los Angeles, California, USA
	Funding: Work supported by the U.S. Department of Energy under contract number DE- AC02-76SF00515. We report initial results of the Plasma Wakefield Acceleration (PWFA) Experiments performed at FACET - Facility for Advanced aCcelertor Experimental Tests at SLAC National Accelerator Laboratory. At FACET a 23 GeV electron beam with 1.8x10¹0 electrons is compressed to 20 microns longitudinally and focused down to 10 microns x 10 microns transverse spot size for user driven experiments. Construction of the FACET facility completed in May 2011 with a first run of user assisted commissioning throughout the summer. The first PWFA experiments will use single electron bunches combined with a high density lithium plasma to produce accelerating gradients >10GeV/m benchmarking the FACET beam and the newly installed experimental hardware. Future plans for further study of plasma wakefield acceleration will be reviewed.

Paper

Title

Page

Operation Status of SECRAL at IMP

1750

W. Lu, Y. Cao
Graduate School of the Chinese Academy of Sciences, Beijing, People's Republic of China
Y.C. Feng, X.H. Guo, W. Lu, L.T. Sun, D. Xie, X.Z. Zhang, H.W. Zhao
IMP, Lanzhou, People's Republic of China

SECRAL (Superconducting ECR ion source with Advanced design in Lanzhou) is a fully superconducting ECR ion source built in 2005 with an innovative solenoid-inside-sextupole structure. Since then it has delivered many highly-charged ion beams for HIRFL (Heavy Ion Research Facility in Lanzhou) at IMP (Institute of Modern Physics), such as Xe²⁷⁺，Kr¹⁹⁺，Bi³⁶⁺ and Ni¹⁹⁺, and its on-line operating time increases year by year. By January 2011, the operation time of SECRAL has totaled up to 5700 hours. The increasing demand for intensive highly-charged ion beams has lead to the continuous enhancement of the SECRAL. To meet the requirement for stable highly-charged metallic ion beams, double-frequency of 18 GHz + 24 GHz heating with an off-axis oven had been carried out in 2010. 60-80 euA of Bi³⁶⁺ were produced at microwave power of about 2 kW and had been delivered continuously to HIRFL for about 10 days without any breakdowns. A number of improvements were planned to further improve the long-term stability of metallic ion beams.

WEPZ023

Results from Plasma Wakefield Acceleration Experiments at FACET

2814

S.Z. Li, C.I. Clarke, R.J. England, J.T. Frederico, S.J. Gessner, M.J. Hogan, R.K. Jobe, M.D. Litos, D.R. Walz
SLAC, Menlo Park, California, USA
E. Adli
University of Oslo, Oslo, Norway
W. An, C.E. Clayton, C. Joshi, W. Lu, K.A. Marsh, W.B. Mori, S. Tochitsky
UCLA, Los Angeles, California, USA
P. Muggli
USC, Los Angeles, California, USA

Funding: Work supported by the U.S. Department of Energy under contract number DE- AC02-76SF00515.
We report initial results of the Plasma Wakefield Acceleration (PWFA) Experiments performed at FACET - Facility for Advanced aCcelertor Experimental Tests at SLAC National Accelerator Laboratory. At FACET a 23 GeV electron beam with 1.8x10¹0 electrons is compressed to 20 microns longitudinally and focused down to 10 microns x 10 microns transverse spot size for user driven experiments. Construction of the FACET facility completed in May 2011 with a first run of user assisted commissioning throughout the summer. The first PWFA experiments will use single electron bunches combined with a high density lithium plasma to produce accelerating gradients >10GeV/m benchmarking the FACET beam and the newly installed experimental hardware. Future plans for further study of plasma wakefield acceleration will be reviewed.