This paper presents a novel high-voltage pulse power generator utilizing a distributed pulser architecture. It combines gallium nitride (GaN) transistors in a Marx topology with an inductive adder, achieving nanosecond-scale switching speeds and high-power efficiency. This article is a revised and expanded version of a paper entitled “A 50 KV Pulse Generator for Fast Kickers”, which was presented at the 15th International Particle Accelerator Conference (IPAC24), Nashville, TN, USA, 19–24 May 2024. Beam injection systems in hadron colliders require kickers. As a core part, the performance of a high-current electron beam source is inevitably essential for high-power sources and accelerators. The substantial increase in UHDR beam current poses serious challenges for conventional active dosimeters.