As indicated by its name, a multi- PMT optical module houses, inside a transparent pressure vessel, an array of small-size PMTs. The effective segmentation of the sensitive area entails some attractive advantages compared to the conventional layout featuring a single large-area PMT. Most prominent among those advantages are an increased effective area uniformly covering the solid angle, an extended dynamic range, as well as intrinsic directional sensitivity of the module.
fiedl
commented
6 years ago
What is an mDOM? https://www.uni-muenster.de/imperia/md/content/physik_kp/agkappes/abschlussarbeiten/doktorarbeiten/1702-phd_lclassen.pdf