This report describes the general information (ex: definition, classification, etc.) of research equipment used in diverse sectors such as life science, medicine, nuclear engineering, material engineering, nano-industry, green industry and national defense. It also explains the construction of accelerators through various visual materials. This report is published to strengthen research infrastructure for basic science, secure future original technology and establish a development plan for research facilities and equipment.

Ⅰ. Definition and classification of accelerators
Ⅱ. Current electron accelerators around the world
Ⅲ. Current heavy-ion accelerators around the world
Ⅳ. Current proton accelerators around the world
Ⅴ. Current domestic accelerators