@misc{oai:repo.qst.go.jp:00077269, author = {Kevin Koga, James and Kando, Masaki and Timur, Esirkepov and Bulanov, Sergey and S. Bulanov, Stepan and Magnusson, Joel and Gonoskov, Arkady and B. Blackburn, Tom and Marklund, Mattias and Kevin Koga, James and Kando, Masaki and Timur, Esirkepov and Bulanov, Sergey}, month = {Oct}, note = {Future proposed linear colliders, such as the International Linear Collider (ILC), are expected to have electron and positron beam energies above 100 GeV. The power deposited in the beam dumps of the ILC is expected to range between 5.3 ~17 MW for 125 and 500 GeV beams, respectively. High intensity lasers are projected to achieve unprecedented intensities greater than $10^{23}$ W/cm$^2$. The combination of such high intensity lasers and the high energy beams at the beam dumps with such high power deposited will provide a unique opportunity to study high field science and applications. We will present the fundamental physics possibilities, such as generation of electron-positron cascades and generation of exotic particles, as well as the applications, such as easing the burden on the beam dumps through the reduction of the beam energies with ultra-high intensity lasers., International Workshop on Future Linear Colliders (LCWS 2019)}, title = {Ultrahigh Intensity Lasers at the ILC: Applications and Fundamental Physics}, year = {2019} }