The first linear accelerators were conceptualized and prototyped in the late 1920s. Johnson & Johnson introduced the first commercial E-Beam systems for medical use in 1956. In the 1960s the technology matured, with different use cases explored in hospital radiotherapy, industrial processing, and materials science. In the 1970s, advances in fundamental particle accelerator research in addition to modern computerized controls advanced the technology significantly in terms of total system power and reliability. The industry has steadily produced higher energy / higher power machines with higher reliability levels. Today, machines like NextBeam’s reliably process multiple truckloads of customer products each day and benefit from exceptional reliability.