Glossary
ESS: Energy Selection System, comprises energy degrader and beam purification bend before the beam transport system
Gantry: Structure rotating beamline allowing at least 180 degrees variation of beam directions
MeV: Kinetic Energy of protons measured in Mega elektron Volts
OAR: Organs At Risk
OIS: Oncology Information System = patient data archive and network
Photons / X-Rays, are used in conventional radiotherapy with linear accelerators
PSI: Paul Scherrer Institute in Villigen near Zurich, Switzerland
PTC: Proton Therapy Center
SOBP: Spread Out Bragg Peak = achieved by superposition of proton beams with varying energy
TCS: Therapy Control System
TPS: Treatment Planning System = computerized calculation of the dose distribution and development of treatment technique and strategy
TSS: Therapy Safety System