Although beam loss handling is not a new discipline, the main challenges have evolved substantially with the increasing energy and intensity of accelerators. Initially, decreasing electronic noise and signal background for collider experiments was the main reason to collimate the circulating beam. The recent use of superconducting technologies demands the removal of holo particles that could be potentially lost and trigger a quench in the structure. In high brightness accelerators, the high power contained in the beam could damage hardware components and hinder operation. In parallel, the development of high power machines with high duty factors makes residual radioactivity a key limitation for maintenance and ultimate performance. Sources of beam losses and the different systems used to remove them before they become harmful were the subject of the first session summarized here.
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