IPAC2013 - List of Authors (Yang, J.C.)

Paper

Title

Page

A Novel Type of Forward Coupler Slotted Stripline Pickup Electrode for CSRe Stochastic Cooling

571

J.X. Wu, X.J. Hu, M. Li, J.W. Xia, J.C. Yang, Y. Zhang, G. Zhu
IMP, Lanzhou, People's Republic of China
F. Caspers
CERN, Geneva, Switzerland

A novel type of slotted or perforated strip-line pick-up or kicker electrode structure for CSRe stochastic cooling for non relativistic particle beams with b=v/c values around 0.7 is presented. This slotted structure is to be used as a forward coupler with the output signal taken from the downstream end and has a rather large relative bandwidth of several octaves. The electrode structure and pickup tank, as well as the beam test result will be presented in this paper.

WEOBB103

High Intensity Heavy Ion Accelerator Facility (HIAF) in China

J.C. Yang, W.P. Chai, D.Q. Gao, Y. He, P. Li, L.Z. Ma, X. Ma, R.S. Mao, J. Meng, J. Shi, L.T. Sun, J.W. Xia, G.Q. Xiao, H.S. Xu, D.Y. Yin, Y.J. Yuan, W.-L. Zhan, J.Q. Zhang, H.W. Zhao, X.H. Zhou
IMP, Lanzhou, People's Republic of China

HIAF ( High Intensity heavy ion Accelerator Facility ) is a new facility planned at China for heavy ion related research. The accelerator complex of this facility consists of a high current superconducting linac (S-Linac), a 45 Tm multifunction synchrotron (ABR-45) equipped with electron cooling for beam accumulation and acceleration and a high energy storage ring system with three storage rings CSR-45, MCR45-1, MCR45-2. The beam from ABR-45 can be stacked longitudinally to high intensity in CSR45. MCR45-1 and MCR45-2 provied two interaction points for Ion-Ion Merging and Electron-Ion Collision researches. The key features of the facility are unprecedented pulse beam intensities and versatile operation mode. The facility will provide intense beams of primary and rare isotopes relativistic heavy ions for a wide range of experiments in particle, nuclear and atomic physics. High energetic and highly bunched heavy ion beams are used to interact with dense plasma to probe the physics of nuclear fusion. Highly charged ions are used for atomic physics programs and a series of applied science.

Slides WEOBB103 [9.197 MB]

WEPEA029

The SHER-HIAF Ring Lattice Design

2561

X. Gao, W.P. Chai, G.D. Shen, J. Shi, J.W. Xia, J.C. Yang
IMP, Lanzhou, People's Republic of China

Super Heavy Experimental Ring (SHER) is one of the rings of the next accelerator complex High Intensity Heavy Ion Accelerator Facility (HIAF) at IMP[4]. Here, present ideas of the lattice design for the operation of the large acceptance ring are presented. The SHER ring has to be optimized for e-cooling and the lattice is designed for different modes. First of all, it is designed in the so called isochronous mode as time-of-flight mass spectrometer for short-lived secondary nuclei. Secondly, SHER can also be used to be a storage ring for collecting and cooling the secondary rare isotope beams from the transport line. In order to fulfill it's purpose, the ion optics can be set to different ion optical modes

WEPEA030

Simulation of Beam Capture Process in HIRFL-CSRm

2564

P. Li, P. Jiang, J.W. Xia, J.C. Yang, Y.J. Yuan
IMP, Lanzhou, People's Republic of China

In this paper, the beam capture processes are simulated in CSRm with the real RF cavity curves. By now, CSRm can accelerate all ions from protons up to the heaviest element, uranium, with variable energies and different efficiency. During the beam capture processes, the capture voltage and capture time must be cheese properly to avoid the beam loss. Moreover, the mismatch between the actual and the setting beam energy and space charge effect are investigated for high beam capture efficiency. The evolution of longitudinal phase space during the capture processes is presented in this simulation too.

WEPEA031

Slow extraction design in HIMM

2567

J. Shi, W.P. Chai, J.W. Xia, J.C. Yang, Y.J. Yuan
IMP, Lanzhou, People's Republic of China

A heavy ion medical machine(HIMM) is proposed for cancer therapy in Lanzhou, China. The slow extraction design of the synchrotron is introduced in this paper. Eight sextupoles are used, four of them are for correcting the chromaticity and the rest for driving the 3rd-order resonance. In order to save the aperture of vacuum chamber, a 3-magnet bump is adopted during the extraction process. The phase space map in the entrance of the electrostatic septum and the last 3 turns' particle trajectory before particle extraction are given.

Paper	Title	Page
MOPME044	A Novel Type of Forward Coupler Slotted Stripline Pickup Electrode for CSRe Stochastic Cooling	571
	J.X. Wu, X.J. Hu, M. Li, J.W. Xia, J.C. Yang, Y. Zhang, G. Zhu IMP, Lanzhou, People's Republic of China F. Caspers CERN, Geneva, Switzerland
	A novel type of slotted or perforated strip-line pick-up or kicker electrode structure for CSRe stochastic cooling for non relativistic particle beams with b=v/c values around 0.7 is presented. This slotted structure is to be used as a forward coupler with the output signal taken from the downstream end and has a rather large relative bandwidth of several octaves. The electrode structure and pickup tank, as well as the beam test result will be presented in this paper.

WEOBB103	High Intensity Heavy Ion Accelerator Facility (HIAF) in China
	J.C. Yang, W.P. Chai, D.Q. Gao, Y. He, P. Li, L.Z. Ma, X. Ma, R.S. Mao, J. Meng, J. Shi, L.T. Sun, J.W. Xia, G.Q. Xiao, H.S. Xu, D.Y. Yin, Y.J. Yuan, W.-L. Zhan, J.Q. Zhang, H.W. Zhao, X.H. Zhou IMP, Lanzhou, People's Republic of China
	HIAF ( High Intensity heavy ion Accelerator Facility ) is a new facility planned at China for heavy ion related research. The accelerator complex of this facility consists of a high current superconducting linac (S-Linac), a 45 Tm multifunction synchrotron (ABR-45) equipped with electron cooling for beam accumulation and acceleration and a high energy storage ring system with three storage rings CSR-45, MCR45-1, MCR45-2. The beam from ABR-45 can be stacked longitudinally to high intensity in CSR45. MCR45-1 and MCR45-2 provied two interaction points for Ion-Ion Merging and Electron-Ion Collision researches. The key features of the facility are unprecedented pulse beam intensities and versatile operation mode. The facility will provide intense beams of primary and rare isotopes relativistic heavy ions for a wide range of experiments in particle, nuclear and atomic physics. High energetic and highly bunched heavy ion beams are used to interact with dense plasma to probe the physics of nuclear fusion. Highly charged ions are used for atomic physics programs and a series of applied science.
	Slides WEOBB103 [9.197 MB]

WEPEA029	The SHER-HIAF Ring Lattice Design	2561
	X. Gao, W.P. Chai, G.D. Shen, J. Shi, J.W. Xia, J.C. Yang IMP, Lanzhou, People's Republic of China
	Super Heavy Experimental Ring (SHER) is one of the rings of the next accelerator complex High Intensity Heavy Ion Accelerator Facility (HIAF) at IMP[4]. Here, present ideas of the lattice design for the operation of the large acceptance ring are presented. The SHER ring has to be optimized for e-cooling and the lattice is designed for different modes. First of all, it is designed in the so called isochronous mode as time-of-flight mass spectrometer for short-lived secondary nuclei. Secondly, SHER can also be used to be a storage ring for collecting and cooling the secondary rare isotope beams from the transport line. In order to fulfill it's purpose, the ion optics can be set to different ion optical modes

WEPEA030	Simulation of Beam Capture Process in HIRFL-CSRm	2564
	P. Li, P. Jiang, J.W. Xia, J.C. Yang, Y.J. Yuan IMP, Lanzhou, People's Republic of China
	In this paper, the beam capture processes are simulated in CSRm with the real RF cavity curves. By now, CSRm can accelerate all ions from protons up to the heaviest element, uranium, with variable energies and different efficiency. During the beam capture processes, the capture voltage and capture time must be cheese properly to avoid the beam loss. Moreover, the mismatch between the actual and the setting beam energy and space charge effect are investigated for high beam capture efficiency. The evolution of longitudinal phase space during the capture processes is presented in this simulation too.

WEPEA031	Slow extraction design in HIMM	2567
	J. Shi, W.P. Chai, J.W. Xia, J.C. Yang, Y.J. Yuan IMP, Lanzhou, People's Republic of China
	A heavy ion medical machine(HIMM) is proposed for cancer therapy in Lanzhou, China. The slow extraction design of the synchrotron is introduced in this paper. Eight sextupoles are used, four of them are for correcting the chromaticity and the rest for driving the 3rd-order resonance. In order to save the aperture of vacuum chamber, a 3-magnet bump is adopted during the extraction process. The phase space map in the entrance of the electrostatic septum and the last 3 turns' particle trajectory before particle extraction are given.