This applet can also be ran standalone, you can download it here.
Cell selection bar:
Left-click to pick what you would like to add to the reactor grid, Ctrl+Left-click will fill ALL blank slots in the grid with the selected type.
Left-click will place the selected item into the grid, Right-click will remove an item.
Specifies the amount of chambers this design has. (duh)
Set the desired amount of external cooling/heating, the reactor's total external cooling cannot go lower than 0.
Initial Hull Temperature:
Set the desired amount of heat in the hull before the reactor is turned on.
Sets how fast a design gets supplied with SUC items
-- Items per second:
The speed of the supply, checkboxes switch between "seconds per item" and "items per second".
-- Item storage:
How much external storage a design has if there's no room inside the reactor.
Output - General Information: (The non-obvious ones)
The amount of EU generatated during one 'Generation Time'.
The total amount of EU generated after the uranium cells have been deplated.
The overall amount of EU/t generated after taking into account the design's cooldown time.
The average number of pulses each uranium cell produces.
The amount of time a reactor can be active it has heat problems or it has ran out of uranium.
The amount of time needed for a design to fully disipate the heat made during one generation period.
The number of consecutive 'Full Cycles' a design can perform before it needs to cooldown.
Time until uranium depleted:
The total time a design can run while alternating Generation and Cooldown periods.
Output - SUC Information:
The amount of cooling from a design's SUC item supply that the design didn't need or couldn't use.
The amount of external storage used by the design, this will never exceed the set SUC storage limits.
Output - Breeder Information:
The total amount of charging a design does in one Generation period. (For an average total of charged cells a design can make after depleting it's uranium, see 'Recharging per tick')