Author/Authors :
Amaldi، نويسنده , , U. and Bianchi، نويسنده , , A. and Chang، نويسنده , , Y-H. and Go، نويسنده , , A. and Hajdas، نويسنده , , W. and Malakhov، نويسنده , , N. and Samarati، نويسنده , , J. and Sauli، نويسنده , , F. and Watts، نويسنده , , D.، نويسنده ,
Abstract :
We describe a Proton Range Radiography system with an imaging area of 10×10 cm2, deploying a pair of Gas Electron Multiplier position-sensitive detectors and a scintillator stack to measure the residual proton range after crossing a target. The detector has been tested in the laboratory and in beam exposures at the Paul Scherrer Institute; images recorded with several phantoms of variable thickness and composition confirm the sub-millimetre accuracy and few percent energy resolution of the instrument. A new device with identical design and larger acceptance, 30×30 cm2, is in construction.
