Design of a new central module for the Modular Total Absorption Spectrometer

Abstract The design and expected performance of the new Central module for the Modular Total Absorption Spectrometer is discussed. Small losses ( ≈ 1%) in efficiency and small increase ( ≈ 10%) of the FWHM are expected due to the introduced dead layers for optical separation between segments. This however should not be significant for the future measurements, while the advantages of the increased segmentation should yield improved information about low energy gamma transitions.