| Note | ||
|---|---|---|
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??? Please note that operations of the DESY Myon Detector requires experienced scientific staff on board. The system is not operated by the ship's crew. Announce operations with the DESY Myon Detector to AWI-Logistics prior to the cruise and clarify the data transfer after the cruise. ??? In case of a system failure just reboot the computer (switch on). The data acquisition program will start automatically. |
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| Metadata (Metadata Plugin) | ||
|---|---|---|
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All components are in the Aerologie lab (A-108). The system consits of 2 sensor boxes, a data acquisiton system, GPS antenna and a netbooknotebook (Linux, Xubuntu 1016.04). In each sensor box is a scintillator, which emits scintillation light when charged particles transmit. The light is transmitted to the photosensor (silicium-photomultiplier by Hamamatsu) via optical fiber. A HV module within the box converts the 5V input power supply to the supply voltage of 70V for the photomultiplier. The signal of the photomultiplier is transmitted to the data acquisition unit. The data acquisition unit needs a 5V15V power supply, provides the 5V power supply for the sensor boxes, amplifies and links the signals from both boxes, produces and transfers data files via USB cable to the netbooknotebook, and faciltiates an input port for signal transmission from the GPS boxantenna. The data acquisition unit and the GPS box are connected via LAN cable. The antenna is mounted inat the corridorrailing above the starboard outside windowdoor. |
Position
Data logging, storage and archiving
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| Metadata (Metadata Plugin) | ||
|---|---|---|
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??? No online time needed for data acquisition. Time stamp needed to identify ship's position and weather data for offline processing. ??? |
| Metadata (Metadata Plugin) | ||
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??? No online position needed for data acquisition. Offline data processing is conducted with ship's position and weather data via time stamp???. |
Rawdata storage on board
| Metadata (Metadata Plugin) | ||
|---|---|---|
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Raw data is stored in ASCII files on SD memory card and USB stick connected to the netbooknotebook. A LAN cable connects the netbooknotbook to the data network of Polarstern. Data transfer to DESY per e-mail once a day. | ||
|| root directory | ??? ||
|| directory name | CruiseNo \\ e.g. \\ ANT25_3 ||
|| file name | ??? ||
|| Data volume (MB per day) ca | ??? ||
|| Number of files per day ca | ??? || |
Dship
| Metadata (Metadata Plugin) | ||
|---|---|---|
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No data transfer to DShip. |
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| Metadata (Metadata Plugin) | ||
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???Data Afteris thearchived cruise,at the operator transfers the measurement data along with required meta data to AWI after consultaion with the data scientist and AWI Logistics. Then, the data (including meta data) can be extracted from https://www.pangaea.de/ (for authorized users only). Offline data processing is conducted with ship's position and weather data via time stamp ???DESY. |