Calibration of a versatile multi-energy soft x-ray diagnostic for WEST long pulse plasmas. - Chellai, O.; Delgado-Aparicio, L. F.; VanMeter, P.; Barbui, T.; Wallace, J.; Hill, K. W.; Pablant, N.; Stratton, B.; Disch, C.; Luethi, B.; Pilet, N. (Review of Scientific Instruments, 2021)