The light sensor module of KM3NeT is a custom designed and build module. It is different from the optical modules in other neutrino telescope, because it comprises in total 31 small (3 inch diameter) photomultiplier tubes. In the album pictures showing details of the design of the module, the qualification models, the integration of the DOMs with the backbone cable thus forming a detection unit and a picture of a DOM in the deep sea at a depth of 3500 m.
(Video impression of DOM construction at our YouTube playlist ‘
KM3NeT detector construction’)
Optical module photograph by submarine at a depth of 3050 m in the deep sea.
Optical module showing how the module is supported by two parallel ropes.
Optical module being integrated with the backbone cable to form a detection unit.
View inside the optical module from below into the optical module. Electronics board, cooling element and fibre tray visible.
View inside the optical module from above.
View of the elements required to install a photomultiplier tube in the support frame.
A blown-up view of the optical module, showing all components including the titanium support structure for integration in a detection unit.
Optical modules integrated with the backbone cable.
Optical module inside the launching vehicle.
Optical module integrated in a detection unit. View from below. (Courtesy Arne de Laat Photography)
Optical module in-situ at a depth of 3500 m
Optical module on display. In the background the launching vehicle.
Components of the optical module on display.
Top view of optical module inside the launching vehicle. Backbone cable running zigzagging from one cable tray to the other.
Hemispheres of optical modules ready for integration.
PMTs as the eyes of in the optical module.
Optical modules in the dark room for tests.
Assembly room for KM3NeT optical modules. A picture of the first prototype module visible as screen saver.
Assembly room of for optical modules. An artist’s impression of the KM3NeT detector visible as screen saver.