Basic technical characteristics of synchrotron:
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Beam energy 70-250 MeV±0.15%
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Beam energy in tomography mode – 330 MeV ±0.15%;
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Intensity of the emitted beam – 1·10E9;
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Acceleration time to 330Мэв – 1 sec.;
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Slow emission of the beam in the range – 0.1-1 sec.;
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100% of the emitted beam reaches the tumor;
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Average power consumption ~ 50 кWt;
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Diameter of synchrotron – 5м;
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Total weight – 25 tonn.
Comparison of time spent per patient.
Today’s therapy process using Gantry
15-20 min – immobilization and verification
1-3 min – irradiation
Full time is 20-30 min
On our installation
1-2 min – immobilization and verification
1-5 min – irradiation
Full time is 7-10 min
Creating many treatment rooms for irradiation is not necessary.
The dose rate for different volumes of tumor
(spherical tumor independently from the location depth)
Optimized algorithm with IMPT
№= 1·10E9 per cycle, T= 1,5 sec
V DR
50 cm3 – 10.0 GY/min
200cm3 – 3.2 GY/min
500 cm3 – 1.6 GY/min
Pulse-to-pulse energy changing