Linac Components
This large rectangular structure generates high-power pulses that start the beam production process.
What is the modulator cabinet?
Electrons gain energy inside this long cylindrical component.
What is the accelerator structure?
This safety device immediately stops beam production in an emergency.
What is the emergency-off button?
These high-power bursts start the microwave generation process.
What are pulses from the modulator?
This large rotating structure supports the treatment head.
What is the gantry?
This device emits electrons that enter the accelerator structure.
What is the electron gun?
This bends the electron beam toward the target in photon mode.
What is the bending magnet?
Beam output is monitored by this component located in the treatment head.
What is the ion chamber (monitor chamber)?
This component creates microwaves without using a klystron.
What is a magnetron?
This flattens the photon beam for uniform dose distribution.
What is the flattening filter?
This component amplifies microwave power for electron acceleration.
What is the klystron (or magnetron)?
This device directs microwave energy in one direction and prevents reflection back to the klystron.
What is the circulator?
The LINAC won’t turn on unless this is closed and secure.
The LINAC won’t turn on unless this is closed and secure.
These microwaves travel through this hollow tube to reach the accelerator.
What is the waveguide?
This device shapes the beam dynamically during IMRT.
What are the MLCs (multi-leaf collimators)?
This structure transports microwaves from the klystron to the accelerator.
What is the waveguide?
This component creates the photon beam by converting electrons into x-rays.
What is the target?
This system maintains the correct operating frequency of the accelerator.
What is the Automatic Frequency Control (AFC) system?
Microwaves + electrons result in this process inside the accelerator structure.
What is electron acceleration?
This component changes the field size.
What are the secondary collimators (jaws)?
This system removes heat from the LINAC to prevent overheating.
What is the cooling water system?
These sheets shape the electron beam when treating with electron mode.
What are the scattering foils?
This property ensures the beam turns off instantly if any parameter deviates from preset limits.
What is fail-safe operation?
If this fails, microwave power drifts and the beam becomes unstable.
What is the AFC system?
This beam component is removed for electron therapy.
What is the target (or flattening filter depending on model)?