Patent ID: 7983397

Claim:
Method for determining one or more characteristics of radiation using a sensor comprising one or more detector units capable of counting the number of photon or charged particle of said radiation impinging on said sensor in or above a determined energy range, comprising the steps of performing a calibration operation comprising the steps of (i) producing a beam k of radiation, said beam producing a known dose D k , said beam being either produced physically or simulated with a model; (ii) determining the counts N k i of said radiation beam comprised in an energy deposition range [E i ,E′ i ], said determination being obtained either by actual measurement or by a computation based on said model; (iii) repeating step (ii) from i=1 to i=imax for a set of different energy deposition ranges [E i , E′ i ]; (iv) repeating steps (i), (ii) and (iii) for a range of different beams k of radiation; (v) determining factors L i by solving the coupled set of equations, for all k D k =Σ i=1 i=imax L i ·N k i , submitting the sensor to the radiation to be measured and determining the deposition spectrum by measuring the counts N i in the energy deposition ranges [E i ,E′ i ]; determining the dose according to the equation D=Σ i=1 i=imax L i ·N i .