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New Technologies, Marco Schippers
ESTRO-course Essen , March 8 2017 5
Cyclotron with strong field
Problem (2):
at
very strong magnetic
fields:
Magnetic field decreases with radius
⇒
T
circle
↑
Bq
m
T
circle
.
.2
π
=
Remedy:
synchro–cyclotron:
pulse RF
and
decrease
f
RF
with radius
time
f
RF
⇒
Needed in smaller
cyclotrons !!
Problem (1):
at
very high speed
:
Mass of particles increases
⇒
T
circle
↑
Bq
m
T
circle
.
.2
π
=