There are essentially two capacitor banks, each 75nF @ 24kV, these are run in parallel to give a total of 150nF at 24kV. Each string of capacitors is rated at 13.5A RMS and their peak discharge rating is 432A, that give a total peak discharge rating of 5.1kA @ 24,000V. The datasheet of these capacitors can be seen at http://www.cde.com/catalogs/PULSE-942C.pdf they are part number 942C20P15K.
MMC Bank Mounted In Wooden Frame.
MMC Just After Completion. 144 Geek-Group Caps, 0.15uF Total.