Background, source test and simulation spectra or program for GNAS

All the spectra is obtained from Ortec 672 and 927 with Maestro.Background spectra of GNAS(Gamma-spectrometer for Nuclear Activation Studies) with and without shielding is uploaded in the Background folder. "with_shield.Spe" is the spectrum with final shield, while "without_shield.Spe" is the spectrum of only the HPGe without any shield.Source test spectra of GNAS is uploaded in the Source folder. "run5.Spe" is the spectrum of Cs-137 source, "run19.Spe" is the spectrum of Co-55,57.58 sample. "20.4_2.Spe" and "20.4_3.Spe" are the Be-7 test spectra.Simulation program is uploaded in the simulation folder.All the Spe file is plain text file, can be open with normal text editor. Simulation program should be run by using Geant4.