6 Axis Logger
Description
The deep sea deployment of a photomultiplier string for the KM3 Net undersea neutrino telescope required spatial recording and visualization. A test string was deployed using an underwater frame designed at NIOZ called a Launcher Optical Module (LOM). A method using 3D acceleration and 3D magnetic vectors was devised and successfully used to record and visualize the string deployment. Fast implementation was possible by building on an existing NIOZ logger design.
Responsibilities
- Realize the project as part of a development team at Royal NIOZ.
- Write embedded code for 3 axis acceleration and 3 axis magnetic data logger.
- Module integration and testing.
Resource Links
- Launcher Optical Module test deployment by Royal NIOZ
- Launcher Optical Module presentation (pdf)
- R/V Pelagia Cruise Report 64PE316 (pdf)
- KM3Net website
6D acceleration/magnetic loggers
6D acceleration/magnetic logger with temperature
Graphic of KM3 Net undersea neutrino telescope showing vertical photomultiplier strings and particle path through the array (red).
Each string consists of a bottom weight (grey), top float (yellow) and intermediate glass spheres containing photomultipliers (cyan). During deployment tests a 6D datalogger was used in each sphere to successfully visualise the motion of the string.