144-145 / 2605
Marco Schippers, Beam production techniques for hadron therapy
ESTRO-course, Esen, March 6-10, 2017 30
Each pulse: set intensity at source
within ms
(=> typ 10-30% accuracy)
=> Spot scanning requires >2 pulses per spot.
V
dee
~
Synchro-Cyclotron
T
circle
increases
with radius.
SO:
decrease
f
RF
with radius and
extract
Repeat 1000 x per sec
time
f
RF
1 ms
stronger magn.fields
Smaller machines !
But….