The Physics Society of Iran Iranian Journal of Physics Research 1682-6957 17 2 2019 11 26 Broad beam electron gun: an experimental approach Broad beam electron gun: an experimental approach 307 311 1265 FA B Yadollahzadeh O Kakuee V Fathollahi M Farmahini Farahani M Esmaeili Nojehdehi Journal Article 2019 11 26 Electron curtain accelerator is a type of low-energy electron accelerator, which plays an important role in many different industries such as printing, coating and packing to promote product quality, while reducing volatile organic compounds for protecting global environment. Electron emitter is one of the main components of this type of accelerators. Multi-filament cathodes and grid structures within filament housing have been designed carefully to generate uniform broad beam distribution. Compared to single filament  cathode, multi-filament cathodes are more preferred in width expansion and beam uniformity. Distortion of linear filament due to thermal expansion is one of the major problems in this type of electron source. The aim of this study is to design and fabricate an appropriate mechanical system to maintain the filament in its initial shape and position when heating. In addition, dependence of emitted electrons on anode voltage (at constant cathode temperature), as well as dependence of emitted electrons on filament current (at constant anode voltage) have been experimentally investigated.     Electron curtain accelerator is a type of low-energy electron accelerator, which plays an important role in many different industries such as printing, coating and packing to promote product quality, while reducing volatile organic compounds for protecting global environment. Electron emitter is one of the main components of this type of accelerators. Multi-filament cathodes and grid structures within filament housing have been designed carefully to generate uniform broad beam distribution. Compared to single filament  cathode, multi-filament cathodes are more preferred in width expansion and beam uniformity. Distortion of linear filament due to thermal expansion is one of the major problems in this type of electron source. The aim of this study is to design and fabricate an appropriate mechanical system to maintain the filament in its initial shape and position when heating. In addition, dependence of emitted electrons on anode voltage (at constant cathode temperature), as well as dependence of emitted electrons on filament current (at constant anode voltage) have been experimentally investigated.     https://ijpr.iut.ac.ir/article_1265_0ce2ffd21fc958d9ef0ee9ba5336e357.pdf