It is estimated that almost third of the population of industrial countries will contract cancer in their lifetime and that about half of these will receive some form of radiation therapy. The aim of radiotherapy is to destroy the malignant cells with minimal damage to healthy tissues.

The vast majority of present facilities use X or gamma rays, or photons produced by electron linear accelerators. Accelerators are more versatile and can provide deeper tissue penetration when necessary. The improvements in tumor control, reduction in mortality and restoration of individual quality of life reported at recent EPAC Conferences is a testimony to the contribution of accelerator technology to medicine.

Euclid focuses on the design of ultra-compact X-ray sources for radiotherapy with emphasis on geometrical precision and optimal dose delivery.