Speaker
Description
The Online Scintillator Internal Radioactivity Investigation System (OSIRIS) is a 20-ton liquid scintillator detector currently under construction at the Jiangmen underground neutrino observatory (JUNO) located at the Kaiping Neutrino Research Center in Kaiping, China. OSIRIS features 75 newly developed, intelligent PMTs (iPMTs) surrounding a cylindrical acrylic vessel embedded in a Cherenkov muon Veto. Its main purpose is the monitoring of the radiopurity of the liquid scintillator during the filling phase of JUNO. Additionally, a consecutive physics program has be defined.
To achieve the monitoring goals of OSIRIS, a rigorous calibration is necessary. For this purpose, two independent calibration systems are introduced: A distributed Laser calibration system, as well as an automated calibration unit (ACU) based on a similar system from the Daya bay experiment featuring three calibration capsules including both, a low and a high activity radioactive source as well as an optical calibration source.
In this poster, the calibration systems of OSIRIS, their estimated performance and the planned calibration modes will be presented.
| Collaboration | JUNO |
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