Proton and ion therapy are often used to treat many types of cancer, such as tumors located deep inside the body. Currently, there are more than 100 devices of this type in the world and all use cyclotron or synchrotron (circular accelerators) to accelerate the particles carrying electricity to the required energy. Compared to these circular devices, linear accelerators (Linacs) have a number of advantages in treatment, most notably, the energy of the adjustable-output beam. very fast (in milliseconds) in-when the beam intensity is not consumed. Because the energy of the deterministic beam of depth that the proton or ion has can penetrate into the tissue, the super-sensitive energy-adjusting ability is very useful in determining the right position of the beam. when the patient is breathing or striking correctly on different points on the tumor. However, in addition to the design difficulties, Linacs are also present - by too big and difficult to implement in the hospital. Recently, Benedetti and co-author at CERN, Switzerland (post on Phys. Rev. Accel. Beams 2017, v.20, p.040101) have proposed a new, used Linacs design. many modern and co-operative technologies are difficult in size. Authors use modified radio frequency technology to bring particles into the machine, accelerate and track them. The new technology is capable of bringing protons through 33 cm deep into the tissue, while the size is much more compact (deployable in a room of 10 m x 20m). Hopefully, this new type Linacs will soon be produced and widely used in the fight against one of the most incurable diseases.