Abstract：
:A new beam line for radiotherapy and radiosurgery with accelerated helium-ion beams has been set up at the Bevalac. The new treatment room has been equipped with a very precise patient positioner in order to utilize the superior dose localization properties of light-ion beams. The beam spreading and shaping system is described, the trade-offs involved in positioning the beam modifying devices are discussed, and the physical properties of the generated radiation fields are reported. The Bragg peak modulation by axial beam stacking employing a variable range shifter is explained and the control system including beam monitoring and dosimetry is presented.
journal_name
Med Physjournal_title
Medical physicsauthors
Ludewigt BA,Chu WT,Phillips MH,Renner TRdoi
10.1118/1.596696subject
Has Abstractpub_date
1991-01-01 00:00:00pages
36-42issue
1eissn
0094-2405issn
2473-4209journal_volume
18pub_type
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