至今環形加速器已在許多基礎科學實驗中被使用，產生極高能粒子以協助科學
家探究宇宙如何形成，然而它們是否也能在更貼近我們日常生活的領域中派上用場?
若能建造產生較低能量且尺寸也較小的加速器，也會很有幫助。這便是「小型加速
器」的概念。
如同其它較大者一般，這樣的加速器也以勞倫茲磁力為運作原理，並且同樣需
要幾個條件的滿足，包含一個離子源、一均勻磁場、真空環境以及高頻率交變電源。
在這篇論文中，將提到建造小型加速器的動機及其潛在應用，它和其中的關鍵部件
── 離子源之設計皆有詳細介紹，並展示永久磁鐵磁場之量測及小型加速器中的電磁
場之模擬。
關鍵字：環形加速器、永久磁鐵、離子源、真空系統。

Cyclotrons have been used in many experiments for basic science, generating particles with extremely high energy to help scientists know more about how the Universe formed. However, can they also serve in fields closer to our daily life? It would also be very useful if they can be made with lower energies and smaller sizes. This is the concept about "Mini-cyclotron".
Like any other larger one, such a cyclotron takes a Lorentz force as its working principle and requires several conditions satisfied including an ion source, a uniform magnetic field, a vacuum environment, and a high-frequencied AC source. In this thesis, motivation of creating Mini-cyclotron and its potential application will be mentioned. Designs and its critical part, Ion source, are described in detail. Measurements of magnetic fluxes between permanent magnets as well as simulations of magnetic and electric fields inside Mini-cyclotron are
also shown.
Keywords: cyclotron, permanent magnet, ion source, vacuum system

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