A differential absorption spectrometer for bremsstrahlung diode voltage measurement

Abstract

An indirect voltage measurement of a relativistic electron beam diode can be deduced from the high energy tail of its bremsstrahlung spectrum. Our spectrometer contains seven silicon pin diode detectors with filters optimized to cover the 0.5–2 MV range. Theoretical response functions were calculated using the CYLTRAN Monte Carlo transport code with the next event estimator method. Diode voltage measurements performed with the spectrometer on the PITHON x-ray simulator are in good agreement with the standard electrical measurement.