Signedunsigned
FunctionThe range modulator was used to control the extant-in-depth that a proton beam would penetrate its target.
Historical AttributesThis range modulator was used at the Harvard Cyclotron Laboratory by Andreas Koehler for his experiments on the detection of osteoporosis, in which he used a live cat as a target for the proton beam.
There was a whole library of range modulators at the cyclotron for use in treating cancerous tumors as well. The modulators governed the extent-in-depth that the proton beam would go in and out of a tumor.
ProvenanceFrom the Harvard Cyclotron Laboratory, 2002.