Heat dissipation device for marx generator, and marx generator

A heat dissipating device for a Marx generator, comprising:

• N cooling plates arranged in sequence, wherein each cooling plate is fixed with a switch component of the Marx generator, and the switch components on the N cooling plates are connected in series in sequence;
• each cooling plate is provided with a water inlet and a water outlet, cooling water flows from the water inlet into an interior of the cooling plate and flows out from the water outlet, and the water inlets and the water outlets of different cooling plates are connected by water cooling connection tubes to realize a cross-cooling plate flow of the cooling water,
• wherein the cooling water flows in from the water inlet of a first cooling plate and flows out from the water outlet of the first cooling plate, after sequentially flowing through m cooling plates except a second cooling plate, the cooling water flows into the water inlet of an Nth cooling plate and flows out from the water outlet of the Nth cooling plate, after sequentially flowing through k cooling plates, the cooling water flows out from the water outlet of the second cooling plate, wherein m+k=N−3, 0≤m≤N−3, and 0≤k≤N−3, and the m cooling plates are different from the k cooling plates.