Calibration methods and tools for KM3NeT

The KM3NeT detectors, ARCA and ORCA, composed of several thousands digital optical modules, are in the process of their realization in the Mediterranean Sea. Each optical module contains 31 3-inch photomultipliers. Readout of the optical modules and other detector components is synchronized at the l...

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Bibliographic Details
Published in:EPJ Web of Conferences
Main Author: Kulikovskiy Vladimir
Format: Article in Journal/Newspaper
Language:English
Published: EDP Sciences 2016
Subjects:
Online Access:https://doi.org/10.1051/epjconf/201611606003
https://doaj.org/article/440283e79c9a43a4bb7c10f335b4cf26
Description
Summary:The KM3NeT detectors, ARCA and ORCA, composed of several thousands digital optical modules, are in the process of their realization in the Mediterranean Sea. Each optical module contains 31 3-inch photomultipliers. Readout of the optical modules and other detector components is synchronized at the level of sub-nanoseconds. The position of the module is measured by acoustic piezo detectors inside the module and external acoustic emitters installed on the bottom of the sea. The orientation of the module is obtained with an internal attitude and heading reference system chip. Detector calibration, i.e. timing, positioning and sea-water properties, is overviewed in this talk and discussed in detail in this conference. Results of the procedure applied to the first detector unit ready for installation in the deep sea will be shown.