Shanghai proton therapy facility consists of a linac
a synchrotron and 4 treatment rooms.The proton beams of 70-250 MeV extracted from the synchrotron are delivered to the treatment rooms through beam transport lines.According to the treatment requirements
beam energy and beam spot size can be regulated.In this article
a layout of the transport system is given.The beam matching is done with Transport code.The Twiss function graphs
and the quadrupole parameters calculated for different beam energies and beam spot sizes
are given.The design goal
idea
method and results of the transport line are presented