Patent ID: 11933925

Abstract:
The invention relates to a particle energy measuring device (14) for determining the energy of a particle beam (26) with (a) at least twenty capacitors (30.n) that (i) each comprise a first capacitor plate (32.n) and (ii) a second capacitor plate (34.n), and (iii) are arranged one behind the other with respect to a beam incidence direction (S), (b) a multiplexer (46) that has (i) a multiplexer outlet (48) and (ii) a plurality of multiplexer inputs (50.n), each multiplexer input (50.n) being designed to connect to precisely one capacitor (30.n) and (iii) that is configured to connect one of the capacitor plates (32.n, 34.n) of the respective capacitor to the multiplexer outlet (48), (c) a total charge measuring device (52) that (i) comprises a total charge measuring device input (54), which is connected to the second capacitor plates (34.n) in order to detect a total charge (QΣ) of the charges on all the capacitors (30.n), and (d) a total charge measuring device outlet (56), and (d) an analysis circuit (58) that (i) is connected to the total charge measuring device (52) and the multiplexer (46), and is designed to automatically (i) effect a switch from one multiplexer input (50.n) to another multiplexer input (50.n), so that the capacitors are individually discharged in succession and (ii) detect the charge (Qn) flowing from each capacitor (30.n) during the discharging process, thereby obtaining charging data from which the particle energy (E) can be calculated.