The components arrived for the new gauss gun which I conceived for myself for the summer - a 22.2 V LiPo battery, a charger for it, and 50 pieces of 450V 220mkF capacitors. The capacitors turned out to be surprisingly compact (only 18x40 mm), and also with a low internal resistance (Low ESR). At least that's what it says on them...In the near future I will try to measure several pieces for the real values of their parameters.