Design and Simulation of Low Energy Beam Transport Line for Intense Neutron Generator

JIA Zehua; LI Gongping; PAN Xiaodong; WEI Xubo; WU Qi; ZHANG Shixu; WU Wangsu

doi:10.11804/NuclPhysRev.34.03.580

The ZF-400 Intense Neutron Generator, which is designed by Lanzhou University with an expected neutron yield of 6×10¹² n/s, is consist of ECR ion source, low energy beam transport (LEBT) line, accelerating tube and rotating target. The beam extracted from ECR source is analyzed and focused through LEBT, then, the beam is introduced into the accelerating tube. The focus and analysis ability of LEBT is very important for the beam loss, neutron yield and target's life. A LEBT line for intense neutron generator is designed in this paper, the project consisted of a solenoid, a bend magnet and three quadrupole lens. The qualified LEBT and its parameters have been got through the simulation with TRACK code. Then TraceWin program was employed to check this simulation and the result satisfied our requirement. Besides, the loss position of impurity ions was known through the simulation, and a project of beam line's cooling system was designed according to this result. Through the simulation, we find the optimal lens combination plan which can obtain lower beam loss and higher beam purity at low running power of LEBT.

Design and Simulation of Low Energy Beam Transport Line for Intense Neutron Generator

1. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;

2. Institute of Modern Physics, CAS, Lanzhou 730000, China

Funds: National Natural Science Foundation of China(21327801)

Corresponding author: 10.11804/NuclPhysRev.34.03.580

Received Date: 2016-12-08

Rev Recd Date: 2017-04-17

Publish Date: 2017-07-18

Key words:

Abstract: The ZF-400 Intense Neutron Generator, which is designed by Lanzhou University with an expected neutron yield of 6×10¹² n/s, is consist of ECR ion source, low energy beam transport (LEBT) line, accelerating tube and rotating target. The beam extracted from ECR source is analyzed and focused through LEBT, then, the beam is introduced into the accelerating tube. The focus and analysis ability of LEBT is very important for the beam loss, neutron yield and target's life. A LEBT line for intense neutron generator is designed in this paper, the project consisted of a solenoid, a bend magnet and three quadrupole lens. The qualified LEBT and its parameters have been got through the simulation with TRACK code. Then TraceWin program was employed to check this simulation and the result satisfied our requirement. Besides, the loss position of impurity ions was known through the simulation, and a project of beam line's cooling system was designed according to this result. Through the simulation, we find the optimal lens combination plan which can obtain lower beam loss and higher beam purity at low running power of LEBT.

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Reference (18)

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Design and Simulation of Low Energy Beam Transport Line for Intense Neutron Generator

doi: 10.11804/NuclPhysRev.34.03.580

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