Geoneutrino mini-workshop

Name: Geoneutrino mini-workshop
Start: 2025-01-02T09:00:00-10:00
End: 2025-01-05T17:00:00-10:00
Location: Watanabe Hall

Jan 2, 2025, 9:00 AM → Jan 5, 2025, 5:00 PM Pacific/Honolulu

Watanabe Hall

2505 Correa Road Honolulu, HI 96822

John Learned (University of Hawaii), Viacheslav Li (LLNL)

Description

Advances in anti-neutrino detector technology and applications for geoneutrinos

Prof.

jlearned@hawaii.edu

Thu, January 2
- 9:00 AM → 11:00 AM
  
  Welcome message: Welcome and RAT-PAC 2
- 11:00 AM → 12:00 PM
  
  NuLat/FROST Lab tour
  
  GeoNu_2025_NaluTour_ViacheslavLi_AnselBare_IsarMostafanezhad_LucaMacchiarulo_JohnLearned_JustineHorikawa_KahiwaHoe_BrianCrow_BillMcDonough_KaiWatanabe_HirokoWatanabe_TakanobuOno_MaxDornfest_AeraJung_JohnGraham_SimranChauhan.jpg
- 12:00 PM → 1:00 PM
  
  Lunch
- 1:00 PM → 2:00 PM
  
  Instrumentation and Development Lab tour
- 2:00 PM → 4:00 PM
  
  OBD and RAT-PAC 2 discussion of simulations
Fri, January 3
- 9:00 AM → 10:00 AM
  
  Evaluating Fast Multi-Channel Photosensors and Readout Electronics for Large Neutrino Detectors 1h
  
  To achieve high energy resolution in large-volume neutrino detectors, it is essential to ensure good photocoverage and use an affordable detection medium. New detection media, such as water-based scintillators, have opened up new opportunities in high-energy physics and nuclear nonproliferation through antineutrino reactor monitoring. Fast, large-area photosensors and multi-channel fast-timing readout electronics are becoming increasingly accessible to researchers.
  In this talk, we present the progress made at LLNL in testing LAPPD and fast-timing electronics. We are currently evaluating readout options for LAPPD Gen2 based on 4-channel AARDVARC and 32-channel HDSOC systems-on-a-chip from Nalu Scientific.
  For the Ocean Bottom Detector, we will also discuss options available at LLNL for detection medium and testbed capabilities, as well as simulation capabilities inherited from the AIT/WATCHMAN R&D.
  
  This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344. Release Number LLNL-ABS-871664.
  
  Speaker: Viacheslav Li (LLNL)
  
  VLi_2025_GeoNeutrino_Workshop_updated.pdf
- 10:00 AM → 10:30 AM
  
  Geoscentific motivation and application of OBD 30m
  
  Speaker: William McDonough (Tohoku)
  
  McDonough_2025_3Jan-geonu_UHawaii.pdf
- 10:30 AM → 11:00 AM
  
  Overview of OBD project 30m
  
  Speaker: Hiroko Watabe (Tohoku)
  
  Watanabe_2025_Jan3_OBD_UHawaii.pdf
- 11:00 AM → 11:30 AM
  
  Hardware development for prototype detector 30m
  
  We are currently developing a prototype detector that will be the first step in the OBD project to realize the idea of a large detector for neutrino observation. Since the deep sea is a very different environment of low temperature and high pressure compared to detectors on continents, it is essential to develop detector elements adapted to this environment.
  
  In this presentation, I will discuss following points:
  performance evaluation of liquid scintillator at low temperature
  development of the photodetector modules with IceCube collaboration
  development of the pressure compensation hose to compensate for the decrease of LS in the deep sea.
  
  Speaker: Takanobu Ono (Tohoku)
  
  Ono_20250104.pptx
- 11:30 AM → 12:00 PM
  
  Simulation study of OBD 30m
  
  We have performed simulations in Geant4 for a 17kt size Ocean Bottom Detector and optical simulations for small prototype.
  
  I will talk about following points:
  Estimation of the number of expected geoneutrino and background events in 17kt detector
  Expected energy spectrum optical simulation tool for small prototype to count the number of photons produced
  Estimation of signal intensity loss due to detector design using Geant4 and ROBAST.
  
  Speaker: Simran Chauhan (Tohoku)
  
  Simran_geonuHawaii012025.pptx
- 12:00 PM → 1:00 PM
  
  Lunch 1h
- 1:00 PM → 4:00 PM
  
  Nalu tour and electronics talks: Talk by a representative from Nalu Scientific and Tour to Nalu Scientific (Manoa Innovation Center) 3h
  
  GeoNu_2025_NaluTour_ViacheslavLi_AnselBare_IsarMostafanezhad_LucaMacchiarulo_JohnLearned_JustineHorikawa_KahiwaHoe_BrianCrow_BillMcDonough_KaiWatanabe_HirokoWatanabe_TakanobuOno_MaxDornfest_AeraJung_JohnGraham_SimranChauhan.jpg
Sat, January 4
- 9:00 AM → 12:00 PM
  
  OBD simulations. Talks by students: Talks by UH and UTohoku students and remote attendees
- 10:00 AM → 10:30 AM
  
  Charged-current interactions on nuclei for low energy geoneutrino detection 30m
  
  Speaker: Sam Hedges
  
  20250104_SHedges_63Cu.pdf
- 12:00 PM → 1:00 PM
  
  Lunch 1h
- 1:00 PM → 4:00 PM
  
  Discussion of toy geometries in RAT-PAC for OBD: OBD and RAT-PAC 2
Sun, January 5
- 9:00 AM → 12:00 PM
  
  Final discussions: Wrap up / summary / action items for whitepapers/proposals
  
  09_AAP_2024_-_Presentation_V3-6.pdf
- 12:00 PM → 1:00 PM
  
  Lunch 1h
- 1:00 PM → 4:00 PM
  
  Reports on simulations by students. Hardware for prototypes: Software and Hardware discussions.
  
  UHM_HighPressureDevice.jpg
  
  UHM_HighPressureDevice_VLi_MDornfest_WMcdonough_JLearned_TOno_SChauhan_BCrow_HWatanabe_AJung_byKWatanabe.jpg

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Geoneutrino mini-workshop

Watanabe Hall