Device and method for electron beam energy verification

A method of determining and comparing changes in a kinetic electron energy spectrum comprising the steps of:

• providing a device comprising a radiation-absorbing mass defined by a top surface, a bottom surface, and side walls,
• said mass having at least four separate slots containing one or more of dosimeter strips, wherein said slots are located at different depths within the mass as measured from the top surface of the mass, and said slots are positioned substantially parallel to the top surface of the mass,
• moving the device containing a first set of dosimeters past a radiation source exposing the device containing dosimeters to a defined energy spectrum for a time sufficient to affect the first set of dosimeters,
• moving the device containing a second set of dosimeters, past the radiation source exposing the device containing dosimeters to the defined energy spectrum for a time sufficient to affect the second set of dosimeters,
• measuring radiation absorbed doses by each set of dosimeters,
• calculating specific dose response ratios, for each set of dosimeters, and comparing the dose response ratios calculated for the first set of dosimeter readings to dose response ratios calculated for the second set of dosimeters.