The impressive performance of current (KEKB) and recent (PEP-II) B-Factory colliders has increased interest in developing even higher luminosity B-factories. Two new designs are being developed (SuperKEKB and SuperB). Both designs plan to deliver a luminosity in the range of 1×10 cms, nearly 100 times the present B-factory level. Achieving this high luminosity requires high-current beams and sh...