Complex sentence: The US Particle Accelerator School (USPAS) is a national workforce development program that provides graduate-level training courses in the science of charged particle beams, lasers, and their associated technologies that are otherwise unavailable to the scientific and engineering communities.
Split into simpler sentences: The US Particle Accelerator School (USPAS) is a national workforce development program in the field of accelerator science and technology. The USPAS provides graduate-level training courses in the science of charged particle beams, lasers, and their associated technologies that are otherwise unavailable to the scientific and engineering communities.