New physics searches at the ILC positron and electron beam dumps

A bstract We study capability of the ILC beam dump experiment to search for new physics, comparing performance electron and positron dumps. The dark photon, axion-like particles, light scalar bosons are considered as physics scenarios, where all important production mechanisms included: electron-positron pair-annihilation, Primakoff process, bremsstrahlung productions. find that has higher sensitivity than past experiments, with having slightly better particles which produced by pair-annihilation.