• 한국초전도ㆍ저온공학회논문지
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• 제17권2호
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• pp.36-40
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• 2015

Electron cyclotron resonance (ECR) ion source is an essential component of heavy-ion accelerator. For a given design, the intensities of the highly charged ion beams extracted from the source can be increased by enlarging the physical volume of ECR zone [1]. Several models for ECR ion source were and will be constructed depending on their operating conditions [2-4]. In this paper three simulation models with 3, 4 and 6 solenoid system were built, but it's not considered anything else except the number of coils. Two groups of optimization analysis are presented, and the evolution strategy (ES) is adopted as an optimization tool which is a technique based on the ideas of mutation, adaptation and annealing [5]. In this research, the volume of ECR zone was calculated approximately, and optimized designs for ECR solenoid magnet system were presented. Firstly it is better to make the volume of ECR zone large to increase the intensity of ion beam under the specific confinement field conditions. At the same time the total volume of superconducting solenoids must be decreased to save material. By considering the volume of ECR zone and the total length of solenoids in each model with different number of coils, the 6 solenoid system represented the highest coil performance. By the way, a certain case, ECR zone volume itself can be essential than the cost. So the maximum ECR zone volume for each solenoid magnet system was calculated respectively with the same size of the plasma chamber and the total magnet space. By comparing the volume of ECR zone, the 6 solenoid system can be also made with the maximum ECR zone volume.

• 한국산학기술학회논문지
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• 제16권10호
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• pp.6453-6457
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• 2015

본 논문에서는 솔레노이드의 자기 이론과 시뮬레이션을 통해 해석의 정확성을 검증하였다. 솔레노이드는 간단한 구조와 빠른 응답성을 바탕으로 기계 산업, 의료 등의 분야에 활발히 사용되어지고 있다. 솔레노이드 엑츄에이터는 전자기력을 활용하며 전류를 인가시키면 자기장이 형성되어 자기력을 발생시키고 플런저를 직선운동 또는 회전운동으로 구동을 시키는 장치이다. 이론 해석은 Biot-Savart's law를 통해 축방향 및 반경방향 자기장 (Magnetic flux density, B)의 값을 구했으며, 임의의 점 P에서의 자기장 값도 계산하였다. Ansys의 Magnetostatic Analysis를 이용하여 해석 시뮬레이션을 진행하였고, 그 결과를 비교하여 이론과 해석의 유사성을 살펴보았다. 비교 결과를 통해 오차 범위 안에서 error값이 존재함을 알 수 있었고, 따라서 정확성을 검증할 수 있었다.