| Paper |
Title |
Page |
MOA1CIO03 |
IMP Cyclotron Status and Developments |
|
| |
- H.W. Zhao, H.F. Hao, M.T. Song, B. Wang, Y.P. Yang, Y.J. Yuan
IMP, Lanzhou, People's Republic of China
|
|
| |
HIRFL (Heavy Ion Research Facility in Lanzhou) is a heavy ion accelerator complex which consists of two cyclotrons and two cooling storage rings. The two cyclotrons SFC (Sector Focus Cyclotron) and SSC (Seperated Sector Cyclotron) have been operated for more than 20 years. Great efforts have been made to improve the operation efficiency, the facility reliability and increasing beam intensity in the last couple of years. A series of upgrading programs have been accomplished which have resulted in a dramatic enhancement of the HIRFL performance. This paper will review the latest status and development of IMP cyclotrons including SFC, SSC and a compact cyclotron for 7MeV/u 12C5+ beam being built as an injector of an ion therapy synchrotron. Meanwhile, some latest developments of highly charged ECR ion sources installed at the SFC axial beam line will be also presented.
|
|
|
Slides MOA1CIO03 [2.660 MB]
|
|
| |
| MOA2CIO01 |
HIRFL-CSR Facility Status and Development |
37 |
| |
- Y.J. Yuan, X.H. Cai, D.Q. Gao, Y. He, L.Z. Ma, X. Ma, R.S. Mao, Y.W. Su, X.L. Tu, J.W. Xia, H.S. Xu, Z. Xu, J.C. Yang, X.D. Yang, X.T. Yang, Y.P. Yang, W. Zhang, H.W. Zhao
IMP, Lanzhou, People's Republic of China
|
|
| |
The HIRFL-CSR facility come into operation by the end of 2007. During operation in recent years, CSR supplied beam for experiments at several terminals and inside both CSRm and CSRe rings. The experiments covers high resolution mass measurement, cancer therapy research, neutron wall, atomic physics using electron target and internal gas target, using injection beam mainly from the SFC of cyclotron injector. New methods and further developments are required to improve the performance of CSR system including multi-gradients measurement method for beam spot commissioning and beam transfer, nonlinear effect correction and stabilization of isochronous mode of CSRe. For suppling of heverier ion beam with proper ernergy, the cyclotron complex should be enhanced and new injector is proposed to replace SFC as injector of SSC.
|
|
|
|
Slides MOA2CIO01 [3.766 MB]
|
|
| |
| MOPCP105 |
Research on Acceptance of SSC |
260 |
| |
- X.N. Li, Y. He, Y.J. Yuan
IMP, Lanzhou, People's Republic of China
|
|
| |
The injection, acceleration and extraction of SSC (Separate Sector Cyclotron) is analyzed and simulated to get the transverse and longitudinal acceptance, using two typical ions 238U36+ and 70Zn10+ with energy 9.7 MeV/u and 5.62 MeV/u respectively. In order to study the actual acceptance of SSC, the isochronous magnetic field model in coincidence with the real one is established by Kr-Kb and Lagrange methods based on the actual measurement. The transverse and longitudinal acceptance is calculated under the above isochronous magnetic field model. From the simulation results, one of the major reason of low efficiency and acceptance of SSC is the defaults in the design of MSI3. The simulation results show that the actual efficiency and acceptance of SSC can be improved by redesign the curvature of MSI3 or shim in MSI3 to change the distribution of inner magnetic field.
|
|
| |
| MOPCP109 |
The Design of Transverse Emittance Measurement at HIRFL-CSR |
272 |
| |
- P. Li, J.X. Wu, Y.Q. Yang, Y.J. Yuan
IMP, Lanzhou, People's Republic of China
|
|
| |
Funding: *Work supported by HIRFL-CSR project #lipeng@impcas.ac.cn
HIRFL-CSR is a multi-purpose heavy ion storage ring in Lanzhou. In order to measure the transverse emittance of the injected beam on the transfer channel to the HIRFL-CSR, two kinds of emittance measurement devices which included pepper-pot and slit-grid were proposed. The pepper-pot is unique in providing an instantaneous measurement of the two-dimensional emittance of a beam. The data acquired by this method is only an image. The slit-grid is a one dimensional emittance measurement device. During the measurement, the slit, driven by the stepper motor is moved stepwise across the beam, and then the signal induced on the grid will be stored in the computer for further analysis. Because slit-grid is one dimensional device, two sets of this device are needed for transverse measurement. In this paper, we introduce the design, parameters, data acquisition and analysis of these two methods. Especially the software integration is given in this paper. Main interest is directed on the software development for emittance front-end control and data analysis such as evaluation algorithms.
|
|
| |