Electron cloud effects in present and future high intensity hadron machines

Electron cloud effects have manifested in several Hadron Machines. The author lists basic machine parameters of past and present hadron machines where electron clouds have influenced operations. This instability has also been seen in the AGS Booster but under extreme conditions. The author also lists high intensity proton machines that are under construction. The goal of the present work is to take what is known about electron cloud problems in current machines, mainly the LANL PSR, and attempt to extrapolate to the new machines.