Advanced Light Source (ALS) physicists Changchun Sun and Hiroshi Nishimura along with HPC Services staff Kai Song, Krishna Muriki, Susan James, Yong Qin, Bernard Li, and Gary Jung recently explored several methods to use Amazon's VPC service to transparently extend the ALS compute cluster, located here at Berkeley Lab, and their software environment into the public Cloud in order perform Accelerator Simulation. Their work was presented during the poster session at the International Particle Accelerator Conference 2012 in New Orleans this week