This contribution acts as an introduction to the requirements of the machine protection system. As the first step, the basics interactions of fast charged particles, neutrons and γ-rays with matter are summarized. The architecture of a machine protection system based on beam loss detection is described. Personal safety issues and personal dosimetry are discussed, including the concept of radiation shielding.
Comments: 28 pages, contribution to the CAS - CERN Accelerator School: Introduction to Accelerator Physics