12 September 2016 Recent results from Compton spectrometer experiments
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During the previous three years, a Compton spectrometer has successfully measured the x-ray spectra of both continuous and flash radiographic sources. In this method, a collimated beam of x-rays incident on a convertor foil ejects Compton electrons. A collimator in the entrance to the spectrometer selects the forward-scattered electrons, which enter the magnetic field region of the spectrometer. The position of the electrons at the magnet’s focal plane is proportional to the square root of their momentum, allowing the x-ray spectrum to be reconstructed. The spectrometer is a neodymium-iron magnet which measures spectra in the <1 MeV to 20 MeV energy range. The energy resolution of the spectrometer was experimentally tested with the 44 MeV Short-Pulse Electron LINAC at the Idaho Accelerator Center. The measured values are mostly consistent with the design specification and historical values of the greater of 1% or 0.1 MeV. Experimental results from this study are presented in these proceedings.
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Amanda E. Gehring, Amanda E. Gehring, Michelle A. Espy, Michelle A. Espy, Todd J. Haines, Todd J. Haines, Timothy J. Webb, Timothy J. Webb, "Recent results from Compton spectrometer experiments", Proc. SPIE 9969, Radiation Detectors: Systems and Applications XVII, 996906 (12 September 2016); doi: 10.1117/12.2238310; https://doi.org/10.1117/12.2238310

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