12-23 October 2020
GMT timezone

The electronics of the Juno Experiment central detector

12 Oct 2020, 16:34
Mini Oral and Poster Front End Electronics and Fast Digitizers Poster session A-01


BERGNOLI, Antonio (Universita e INFN, Padova (IT))


The Jianmeng Underground Neutrino Observatory (JUNO) will be the
largest, liquid scintillator (LS) underground neutrino
experiment. Juno is under construction in the South of China and its
main purpose is to measure the neutrino mass hierarchy. Thanks to its
large mass, 20 kton of LS, it will perform several measurements, from the precise measurements of oscillation parameters
to the detection of neutrinos coming from SuperNovae. The central
detector is made of a sphere of 20kt LS surrounded by about 18000 20"
(large) and 25000 3" (small) photomultipliers. An essential ingredient
for the neutrino mass hierarchy measurement is excellent energy (3%
at 1 MeV) and time resolutions. These requirements will be satisfied
thanks to the full PMT waveform acquisition with a large dynamic range
(from 1 to 1000 photo-electrons). In order to satisfy these challenging
requirements, the Front End electronics will fully exploit the use of a
set of 14 bits Flash ADC, a medium-sized FPGA and a dedicated
synchronization and trigger system that distributes the clock to all the
channels, synchronizes the timestamp and manage the validation of the
trigger primitives sent by each channel. The front end electronics will
be placed underwater, and the reliability of such
devices will be a primary concern. The data readout is performed with a
1Gb/s Ethernet Links, connecting groups of three PMT to the
'dry' electronics. This paper
presents an overview of the electronics of the central
detector with results on tests performed on the prototypes of the
full electronics and trigger chains.

Minioral Yes
Are you a student? No
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Primary author

BERGNOLI, Antonio (Universita e INFN, Padova (IT))


Dr MARINI, Filippo (INFN - National Institute for Nuclear Physics)

Presentation materials