CYCLOTRONS 2010 - List of Authors (Chen, Z.)

Paper	Title	Page
MOPCP013	Magnetic Field Calculation and Magnet Shimming Simulation for the CYCHU-10 Cyclotron	69
	Z. Chen, D.Z. Chen, K.F. Liu, B. Qin HUST, Wuhan, People's Republic of China
	The compact internal ion source cyclotron CYCHU-10 developed in Huazhong University of Science and Technology (HUST) is in magnet machining, and will be assembled soon later. Difference between the ideal computation and practical measurement of the magnetic field is an important reference for magnet shimming. So in this paper, a further study on magnet field computation using FEM is implemented. By giving diverse boundaries and grid meshes, a quarter and a half models are both calculated to make sure correctness of the ideal model. Besides, the research on magnet shimming is also carried out. A new shim tool based on an improved matrix method combining the multiple linear regression is developed to simulate the practical shimming process. With the aid of 3D finite element code and beam dynamics code, an iterative shimming process has been accomplished successfully. The results verify the feasibility and effectiveness of the shim tool.

Paper

Title

Page

Magnetic Field Calculation and Magnet Shimming Simulation for the CYCHU-10 Cyclotron

69

Z. Chen, D.Z. Chen, K.F. Liu, B. Qin
HUST, Wuhan, People's Republic of China

The compact internal ion source cyclotron CYCHU-10 developed in Huazhong University of Science and Technology (HUST) is in magnet machining, and will be assembled soon later. Difference between the ideal computation and practical measurement of the magnetic field is an important reference for magnet shimming. So in this paper, a further study on magnet field computation using FEM is implemented. By giving diverse boundaries and grid meshes, a quarter and a half models are both calculated to make sure correctness of the ideal model. Besides, the research on magnet shimming is also carried out. A new shim tool based on an improved matrix method combining the multiple linear regression is developed to simulate the practical shimming process. With the aid of 3D finite element code and beam dynamics code, an iterative shimming process has been accomplished successfully. The results verify the feasibility and effectiveness of the shim tool.