A new photosensor module that consists of 19 3-inch photomultiplier tubes has been developed for the Hyper-Kamiokande experiment, a next generation neutrino experiment. This talk will present the current status of the new photosensor module development and how the module will be used in the water Cherenkov test experiment and the intermediate water Chereknov detector that will be one of the...
Hyper-Kamiokande (HK) consists of a large Water Cherenkov detector, far detector (FD), and neutrino beam line, J-PARC. The FD is under construction now, and will be equipped with 20,000 PMTs whose diameter is 20 inch. It is improved and has twice better performance than that of Super-Kamiokande detector. For the 20 inch PMTs, we have been developing several types of readout electronics. They...
The construction of the next-generation far detector Hyper-Kamiokande (HK) has started. It will have ten times larger fiducial volume and increased detection performances. The data taking is planned for 2027. Time stability is crucial, as detecting physics events relies on reconstructing Cherenkov rings based on the coincidence between the photomultipliers. The above requires a timebase jitter...
We look at the PMTs, bases, and digitizers for the IceCube Observatory: the original installed IceCube Gen1 modules, the under-construction IceCube Upgrade modules, and the proposed IceCube Gen2 modules. Will also look at the proposed solutions for the Southern Wide-field Gamma-ray Observatory (SWGO). Of particular interest is the customization of tubes at the factory, and a powerful...
The Deep Underground Neutrino Experiment (DUNE) is an upcoming neutrino physics experiment that will answer some of the most compelling questions in particle physics and cosmology. The DUNE Far Detector (FD) exploits silicon photomultipliers (SiPMs) to detect scintillation photons produced by the interaction of charged particles in the liquid Argon time projection chamber (LArTPC).
The SiPMs...
The JSNS2 experiment aims to search for the existence of sterile neutrino oscillations with deltam2 near 1eV2 at J-PARC MLF. A 1MW beam of 3 GeV protons incident on a spallation neutron target produces an intense neutrino beam from muon decay at rest. The experiment will search for muon antineutrino to electron antineutrino oscillations which can be detected by the inverse beta decay...
The Mu2e Cosmic Ray Veto must veto cosmic-ray muons over a large area with an efficiency of 99.99% in the presence of high background rates. It consists of over 5000 scintillator extrusions with embedded wavelength-shifting fibers coupled to 2×2 mm2 silicon photomultipliers. A custom readout system consists of: (1) small circuit board, the Counter Mother Board, which provides a temperature...
An optical Time Projection Chamber (TPC) is proposed for future neutrino experiments. Its excellent particle detection momentum threshold, together with cost-effective scale-up prospects, make the TPC a strong candidate for reducing systematic errors due to neutrino-nucleus interactions.
In order to produce a high number of photons, the TPC is equipped with a thick gaseous electron multiplier...
In the T2K experiment, new detectors are going to be installed to the near detector.
Super-FGD is one of them and a tracker which consists of 2 millions plastic scintillator cubes.
60 thousands wave length shifting fibers will be inserted to the cubes to lead scintillation light and it will be detected by SiPMs.
I will report the procedure to construct and install this detector.
The...
The Telescope Array (TA) experiment, located near Delta, Utah, USA, is the largest ultra-high energy cosmic ray (UHECR) observatory in the northern hemisphere. When a UHECR primary particle arrives at the Earth, it collides with the atmosphere and produces a cascade of secondary particles known as an extensive air shower (EAS). The Telescope Array is designed to observe the EAS using a hybrid...
The DUNE experiment is a future long-baseline neutrino oscillation experiment aiming at measuring the neutrino CP violation and establishing the neutrino mass hierarchy, as well as at a rich physics programme from supernovae over low-energy physics to beyond standard model searches.
The baseline technology for the first far detector is a proven single-phase horizontal drift liquid Argon TPC...
Photon detection systems (PDS) are an integral part of liquid-argon neutrino detectors. Besides providing the timing information for an event, which is necessary for reconstructing the drift coordinate of ionizing particle tracks, photon detectors can be effectively used for other purposes including triggering events, background rejection, and calorimetric energy estimation. PDS in particular...
We present a brief description of the Short-Baseline Near Detector (SBND) hardware trigger
system. The SBND experiment is a liquid argon neutrino detector that sits on the central axis of
the Booster Neutrino Beam (BNB), located at Fermilab. The detector is currently being assembled
and is expected to start operating in 2023. Neutrinos delivered by the BNB will interact with liquid
argon...
Optical readout of large scale dual-phase liquid Argon TPCs is an attractive and cost effective
alternative to charge readout. Following the successful demonstration of 3D optical readout with the ARIADNE 1-ton detector, the ARIADNE+ experiment was recently deployed using the protoDUNE “cold box” at the CERN neutrino platform imaging a much larger active region of
2m x 2m. ARIADNE+ uses 4...
The T2K neutrino experiment in Japan obtained a first indication of CP violation in neutrino oscillations. To obtain better sensitivity, T2K will accumulate more statistics with a higher intensity beam and an upgraded of-axis near detector (ND280). It will allow us to reduce systematic uncertainties in oscillation measurements. The upgraded detector will have the full polar angle...
The High-Angle Time Projection Chambers (HA-TPCs) are a new set of detectors that will equip the off-axis near detector (ND280) of the T2K long-baseline neutrino oscillation experiment. These detectors will be installed below and above a new Super Fine-Grained Scintillator detector (FGD) in 2023 as part of the upgrade of ND280.
The HATPCs operate at atmospheric pressure with the “T2K gas”...
To cope with the high event pile-up, the liquid argon time projection chamber of the near detector complex of the Deep Underground Neutrino Experiment relies on an innovative modular design featuring an advanced high-coverage photon detection system, a true 3D pixelated charge readout, and a low-profile resistive-shell field cage. The capabilities of this detector, including the performance of...
The Neutrino Experiment with a Xenon TPC (NEXT) is an international collaboration searching for the ultra-rare neutrinoless double beta decay process with the xenon-136 isotope. The experimental programme in NEXT consists of a series of high-pressure gaseous xenon time projection chambers with the most recent experiment (NEXT-White) running from 2016 - 2021 consisting of 5 kg of xenon and...
Measuring the solar neutrino flux over gigayear timescales could provide a new window to inform the solar standard model as well as studies of the Earth’s long-term climate. We demonstrate the feasibility of measuring the time evolution of the B8 solar neutrino flux over gigayear timescales using paleo detectors, naturally occurring minerals which record neutrino-induced recoil tracks over...
As part of a currently ongoing upgrade to the IceCube Neutrino Observatory, seven new strings will be deployed in the central region of the detector to enhance the capability to detect neutrinos in the GeV range. A main science objective of the IceCube Upgrade is to improve the calibration of the IceCube detector as a means of reducing systematic uncertainties related to the optical properties...
The Liquid Argon Time Projection Chamber (LArTPC) is increasingly becoming the chosen technology for current and future precision neutrino oscillation experiments due to its superior capability in particle tracking and energy calorimetry. In LArTPCs, calorimetric information is critical for particle identification, which is the foundation for the neutrino cross-section and oscillation...
Jiangmen Underground Neutrino Observatory (JUNO) is a 20 kton liquid scintillator based neutrino experiment, being built in the Guangdong province in Southern China. Its construction is expected to be completed in 2023. The experimental hall is located underground, below a 700 meter rock over-burden, to reduce backgrounds from cosmic rays. JUNO will act as a multipurpose observatory for...
The Short-Baseline Neutrino (SBN) Program at Fermilab consists of multiple Liquid Argon Time Projection Chamber (LArTPC) detectors in a single neutrino beam. SBN will have a broad physics program that includes GeV-scale neutrino cross section measurements and Beyond Standard Model physics searches including a search for short-baseline neutrino oscillations. Especially for the oscillation...