Okay but i dont understabd something: what are you telling me is it the energy required to cause a pair production or how much energy us released from a antimatter matter annihilation?

okay, so if a proton antiproton pair production requires about 8k/h, how much electricty does a positron electron pair production require ?

Also what would be the least energetic photons (wavelength) capable of causing a proton-antiproton pair production (and how much?)? if they were to be shot by lasers, how much electricty would the lasers need?

Thank you for your answer kingledon but i thought a proton antiproton pair production could only be caused by concentrating at least two energetic photons together, how can only one energetic photon cause a pair production, without interacting with an other particle?

Your comment is really interesting michael, but i wonder, if it takes 67 hours for the one nanosecond burst, how can we stock the electricty created by the solar panels? also, is a one nanosecond burst long enough to cause a proton-antiproton pair production?