New and Enhanced Photosensor Technologies for Underground/underwater Neutrino Experiments (NEPTUNE 2020)

Gianfranca De Rosa (NA), Pasquale Migliozzi (NA)
Due to Covid-19 pandemic and the subsequent decision of the Italian Government, we are forced to cancel the workshop that was already postponed from March to November.
Over the last years some of the most important discoveries in particle (discovery of neutrino oscillations) and astro-particle physics (discovery of extra-galactic high-energy neutrinos) have been achieved by experiments detecting scintillation or Cherenkov light, produced by the charged particles produced in the neutrino interactions, by means of photosensors. Currently, several programs are ongoing for the upgrade of the existing facilities or the development of next generation ones. Also in this case the detection principle exploits the scintillation or Cherenkov light produced by charged-particles. Therefore, the development of new and enhanced photosensors is a key step towards the construction of new and more sensitive experiments both in particle and astro-particle physics.
The goal of this workshop is to review the state of the art and future developments in the field of photosensors, with particular attention to the high pixelation photosensor approach using small PMTsand their applications. The properties of materials used to build instrumentation based on photosensors and the electronics will be some of the topics of the workshop. The calibration of the devices as well as the event reconstruction and Monte Carlo technique will be also addressed.



  • Alan Cosimo Ruggeri
  • Alexander Kappes
  • Anatael CABRERA
  • Armand Hattat
  • Ciro Riccio
  • Claudio Kopper
  • Daniele Vivolo
  • Deepak Gajanana
  • fabio marzaioli
  • Gianfranca De Rosa
  • John Kelley
  • Jonas Reubelt
  • Judith Schneider
  • Karl-Heinz Sulanke
  • Lew Classen
  • Marcin Ziembicki
  • Mathieu Guigue
  • Matthew Malek
  • Oleg Kalekin
  • Paolo Fermani
  • Pasquale Migliozzi
  • Raffaele Buompane
  • Semyon Khokhlov
  • Shunichi Mine
  • Stefano Germani
  • stefano russo
  • Thijs van Eeden
  • Thomas Lindner
  • Uli Katz
  • Vincenzo Berardi
  • Vitaly Shutov
  • Vladimir Kulikovskiy
  • Yasuhiro Nishimura
    • 8:30 AM 9:00 AM
      Welcome 30m
    • 9:00 AM 10:20 AM
      Recent progress in photosensor developments
      • 9:00 AM
        The CHIPS PMT system 20m
        Speaker: Stefano Germani
      • 9:20 AM
        40K calibration of the DOMs in the sea 20m
        Speaker: Paolo Fermani
      • 9:40 AM
        Study of the R14374 Hamamatsu PMTs performance 20m
        Speaker: Oleg Kalekin
      • 10:00 AM
        PMT development and characterization for mDOM 20m
        Speaker: Jonas Reubelt
    • 10:20 AM 11:00 AM
      Coffee break 40m
    • 11:00 AM 12:20 PM
      Recent progress in photosensor developments
      • 11:00 AM
        JUNO PMT system 20m
        Speaker: TBD TBD
      • 11:20 AM
        Development and measurement of new large-aperture photodetectors 20m
        Speaker: Yasuhiro Nishimura
      • 11:40 AM
        3-inch PMT characterization 20m
        Speaker: TBD TBD
      • 12:00 PM
        The Accelerator Neutrino-Nucleus Interaction Experiment (ANNIE) and First Use of Large-Area Picosecond Photo-Detectors (LAPPDs) in a Neutrino Detector 20m
        Speaker: Matthew Malek
    • 12:20 PM 1:00 PM
      High-voltage generation, electronic read-out and signal processing
      • 12:20 PM
        KM3NeT PMT base developments 20m
        Speaker: Deepak Gajanana
      • 12:40 PM
        Communication between in-ice modules and surface in IceCube Upgrade 20m
        Speaker: John Kelley
    • 1:00 PM 2:00 PM
      Lunch 1h
    • 2:00 PM 3:40 PM
      High-voltage generation, electronic read-out and signal processing
      • 2:00 PM
        Readout electronics/mainboard for mDOM 20m
        Speaker: Karl-Heinz Sulanke
      • 2:20 PM
        JUNO HV generation system 20m
        Speaker: TBD TBD
      • 2:40 PM
        JUNO Readout system 20m
        Speaker: TBD TBD
      • 3:00 PM
        mPMT electronics for mPMT in Hyper-Kamiokande 20m
        Speaker: Marcin Ziembicki
      • 3:20 PM
        CHIPS and ICECube HV and readout systems 20m
        Speaker: John Kelley
    • 3:40 PM 4:10 PM
      Coffee break 30m
    • 4:10 PM 4:50 PM
      High-voltage generation, electronic read-out and signal processing
      • 4:10 PM
        Design verification tests of the PMT-HV-Base for the IceCube mDOM 20m
        Speaker: Judith Schneider
      • 4:30 PM
        Electronics for Large Arrays of Photodetectors 20m
        Speaker: Nicola Paoli
    • 4:50 PM 5:50 PM
      Calibration systems
      • 4:50 PM
        Time-over-threshold PMT calibration in the KM3NeT project 20m
        Speaker: Oleg Kalekin
      • 5:10 PM
        PMT and DOM simulation in KM3NeT 20m
        Speaker: Vladimir Kulikovskiy
      • 5:30 PM
        IWCD mPMT calibration 20m
        Speaker: Thomas Lindner (TRIUMF)
    • 9:00 AM 10:20 AM
      multi-PMT systems for photodetection
      • 9:00 AM
        KM3NeT DOM and future developments 20m
        Speaker: Daniele Vivolo
      • 9:20 AM
        IceCube Upgrade and IceCube-Gen2 overview 20m
        Speaker: Claudio Kopper
      • 9:40 AM
        Module design concepts for IceCube-Gen2 20m
        Speaker: Markus Ackermann
      • 10:00 AM
        DOM behavior as a function of the temperature and humidity 20m
        Speaker: Carlos Maximiliano Mollo (
    • 10:20 AM 11:00 AM
      Coffee break 40m
    • 11:00 AM 12:20 PM
      multi-PMT systems for photodetection
      • 11:00 AM
        JUNO Dual Calorimetry system description 20m
        Speaker: TBD TBD
      • 11:20 AM
        mPMT prototype test in MEMPHINO 20m
        Speaker: Mathieu Guigue
      • 11:40 AM
        mPMT for Hyper-Kamiokande 20m
        Speaker: Vincenzo Berardi
      • 12:00 PM
        mPMT prototype for IWCD 20m
        Speaker: Lindner Thomas
    • 12:20 PM 2:30 PM
      Opening of the KM3Net integration point
    • 2:30 PM 3:50 PM
      Simulation and Results from experiments taking data
      • 2:30 PM
        JUNO Data & Simulation 20m
        Speaker: TBD TBD
      • 2:50 PM
        Optical TPC analysis for IWCD 20m
        Speaker: Akira Konaka (TRIUMF)
      • 3:10 PM
        Impact of mPMT to HyperK 20m
        Speaker: Benjamin Quilan
      • 3:30 PM
        Angle and position dependent response of PMTs in a KM3NeT DOM 20m
        Speaker: Thijs Juan van Eeden
    • 3:50 PM 4:30 PM
      Coffee break 40m
    • 4:30 PM 5:30 PM
      Calibration systems
      • 4:30 PM
        Calibration system in Super-Kamiokande and plans for Hyper-Kamiokande 20m
        Speaker: Shunichi Mine
      • 4:50 PM
        CERN water Cherenkov beam test 20m
        Speaker: Akira Konaka
      • 5:10 PM
        22. Time Synchronization Schemes for the Future Hyper-Kamiokande Experiment 20m
        Speaker: Stefano Russo
    • 9:00 AM 11:00 AM
      Mechanics of underground/underwater multi-PMT devices
      • 9:00 AM
        Mechanical design of the mDOM for IceCube Upgrade 20m
        Speaker: Lew Classen
      • 9:20 AM
        Vessel materials for mPMT in Hyper-Kamiokande 20m
        Speaker: Roberto Spina ( )
      • 9:40 AM
        Acrylic cover in Hyper-Kamiokande 20m
        Speaker: Alan Cosimo Ruggeri
      • 10:00 AM
        Mass spectrometry and NRA for the KM3NeT materials 20m
        Speaker: Fabio Marzaioli
      • 10:20 AM
        Underwater cabling and interconnect solutions for JUNO 20m
        Speaker: Armand Hattat
      • 10:40 AM
        Chips detector planes 20m
        Speaker: Jennifer Thomas
    • 11:00 AM 11:30 AM
      Coffee break 30m
    • 11:30 AM 12:00 PM
      Available facilities for tests
    • 12:00 PM 12:40 PM
      Summary talk