The idea to organise this workshop came up during the High Intensity High Brightness Hadron Beams workshop, HB2006, Tsukuba, Japan (2006). This workshop will focus on problems and solutions for absorbers and collimators for accelerators with Multi-MJoule stored beam energy. The objective of the workshop is to better understand the technological limits imposed by mechanisms related to beam impact on materials. This presentation will introduce the workshop and the issues to be addressed. The questions raised during the preparation of the workshop will be listed.