Yes, it is possible from many years; but this is a very big and expensive installation.
particle accelerator
No, a particle accelerator cannot give you superpowers.
Nothing unless the atoms form a target. A PARTICLE accelerator accelerates PARTICLES not atoms.
Man-made elements are made in a particle accelerator.
A particle accelerator, such as a synchrotron or cyclotron, is used to make subatomic particles move faster by applying strong magnetic and electric fields to propel the particles to higher speeds.
Particle Physics
Cyclotron
The Compact Particle Accelerator - 2012 was released on: USA: 8 March 2012 (internet)
Sometimes artificial transmutations will not occur unless bombarding particles are moving at extremely high speeds, and since a particle accelerator can accelerate a particles speed very close to the speed of light, then you would have to use a particle accelerator to make the transmutation happen.
splits atomes
Particle accelerator
a particle accelerated by a particle accelerator - That's my best guess