Three-dimensional electric field calculations for wire chamber using element refinement method in ANSYS  

作　　者：Yao-Feng Zhang J. Barney M. B. Tsang Chun-Lei Zhang 

机构地区：[1]The Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University,Beijing 100875, China [2]Beijing Radiation Center, Beijing 100875, China [3]National Superconducting Cyclotron Laboratory, and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA

出　　处：《Nuclear Science and Techniques》2018年第12期96-101,共6页核技术（英文）

基　　金：supported by the National Nature Science Foundation of China(No.11605009);China Scholarship Council,the U.S.Department of Energy under Grant No.DE-SC0014530;the National Science Foundation(No.PHY-1565546);the Fundamental Research Funds for the Central Universities(No.2018NTST08)

摘　　要：Finite element analysis(FEA) method was employed to perform three-dimensional(3D) electric field simulations for gas detectors with multiple wire electrodes.A new element refinement method developed for use in conjunction with the FEA program ANSYS allows successful meshing of the wires without physically inputting the wires in the chamber geometry. First, we demonstrate a model with only one wire, for which we calculate the potential distributions on the central plane and the end-cap region. The results are compared to the calculations obtained using GARFIELD, a two-dimensional program that uses the nearly exact boundary element method. Then we extend the method to same model, but with seven wires.Our results suggest that the new method can be applied easily to the 3D electric field calculations for complicated gas detectors with many wires and complicated geometry such as multiwire proportional chambers and time projection chambers.Finite element analysis （FEA） method was employed to perform three-dimensional （3D） electric field simulations for gas detectors with multiple wire electrodes. A new element refinement method developed for use in conjunction with the FEA program ANSYS allows suc- cessful meshing of the wires without physically inputting the wires in the chamber geometry. First, we demonstrate a model with only one wire, for which we calculate the potential distributions on the central plane and the end-cap region. The results are compared to the calculations obtained using GARFIELD, a two-dimensional program that uses the nearly exact boundary element method. Then we extend the method to same model, but with seven wires. Our results suggest that the new method can be applied easily to the 3D electric field calculations for complicated gas detectors with many wires and complicated geometry such as multiwire proportional chambers and time projection chambers.

关 键 词：有限元素分析 ANSYS 电场计算 精炼方法 电线 房间 三维 电场模拟 

分 类 号：O571[理学—粒子物理与原子核物理]