Proton Therapy Center Switzerland AG (PTCS) is a project development company responsible for the planning, construction, technical non-clinical operation and financing of a proton therapy centre. The planned therapy centre will deliver outpatient proton-beam radiotherapy as part of interdisciplinary oncologic care, offer complementary services such as conventional radiotherapy, hyperthermia and adjuvant chemotherapy in collaboration with partner hospitals, and include infrastructure for treatment rooms with gantries, a linear accelerator, imaging, treatment planning and clinical trials administration.