Dortmund 2021 – scientific programme
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T: Fachverband Teilchenphysik
T 63: Detector Systems II
T 63.5: Talk
Wednesday, March 17, 2021, 17:00–17:15, Tm
Performance of the intelligent PMTs for OSIRIS — •Christian Wysotzki1, Feng Gao1, Achim Stahl1, Jochen Steinmann1, and Cornelius Vollbrecht1,2 — 1RWTH Aachen University - Physics Institute III B, Aachen, Germany — 2Institut für Kernphysik, Forschungszentrum Jülich, Jülich 52428, Germany
OSIRIS (Online Scintillator Internal Radioactivity Investigation System) is a standalone 20-ton liquid scintillator detector. As a subsystem of the JUNO experiment, it provides surveillance of the liquid scintillator quality with respect to the radiopurity.
OSIRIS uses 76 20-inch PMTs as detector units and harnesses a novel approach of readout. The analog signal digitization is located on the backend of the PMT. Additionally, each PMT has signal processing resources consisting of an FPGA plus processor combination. This allows the implementation of high-speed algorithms directly on the back of the PMT, denoted as ``intelligence''.
Performance results of a prototype system will be presented in this talk.