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@InProceedings{gerasev:icalepcs2019-wesh3002,
author = {A.V. Gerasev and P.B. Cheblakov},
title = {{Control System for Fast Components of Electron Beam Welding Machines}},
booktitle = {Proc. ICALEPCS'19},
pages = {1516--1518},
paper = {WESH3002},
language = {english},
keywords = {controls, EPICS, electron, real-time, experiment},
venue = {New York, NY, USA},
series = {International Conference on Accelerator and Large Experimental Physics Control Systems},
number = {17},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {08},
year = {2020},
issn = {2226-0358},
isbn = {978-3-95450-209-7},
doi = {10.18429/JACoW-ICALEPCS2019-WESH3002},
url = {https://jacow.org/icalepcs2019/papers/wesh3002.pdf},
note = {https://doi.org/10.18429/JACoW-ICALEPCS2019-WESH3002},
abstract = {Modern electron beam machines for different applications including welding, additive technologies and etc. consist of many different subsystems, which should be controlled and monitored. They could be divided by so-called fast and slow subsystems. Slow subsystems allow reaction time to be around couple of seconds that can be implemented using PC. Fast subsystems require time to be around hundreds of microseconds combined with flexible logic. We present an implementation of such fast system for mechanical moving platform and electron beam control. The core of this system is single board computer Raspberry Pi. We employed a technique of fast waveform generation using Raspberry Pi on-chip DMA to manipulate stepper motors. Raspberry Pi was equipped by external CAN controller to operate an electron beam via CAN DACs. Special software was developed including libraries for low- and high-level technical process control written in C and Rust; and in-browser graphical user interface over HTTP and WebSockets. Finally, we assembled our hardware inside standard 19-inch rack mount chassis and integrated our system inside experimental electron beam machine infrastructure.},
}