Particle Therapy 2017

Synchro-Cyclotron

stronger magn.fields  Smaller machines ! But….

~

V dee

T circle

increases with radius.

SO: decrease f RF with radius and extract Repeat 1000 x per sec

f RF

1 ms

time

Each pulse: set intensity at source within ms (=> typ 10-30% accuracy) => Spot scanning requires >2 pulses per spot.

Marco Schippers, Beam production techniques for hadron therapy

ESTRO-course, Esen, March 6-10, 2017 30