Particle Therapy 2017

Cyclotron; high energy

Bq m . .2 π

T

=

circle

2 2 cv m m − 0

However (2): if v  c :

=

1

=> m ↑ => T circle

↑

m = mass B = magnetic field q = charge v = velocity c = speed of light

30 MeV p: v/c=0.24 => m= 1.03 m 0 250 MeV p: v/c=0.61 => m= 1.27 m 0

Marco Schippers, Beam production techniques for hadron therapy

ESTRO-course, Esen, March 6-10, 2017 29