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Introducing a Markov Chain-Based Time Calibration Procedure for Multi-Channel Particle Detectors: Application to the SuperFGD and ToF Detectors of the T2K Experiment
S. Abe, H. Alarakia-Charles, I. Alekseev +190
Inter-channel mis-synchronisation can be a limiting factor to the time resolution of high performance timing detectors with multiple readout channels and independent electronics un…
Development of the Beam Monitor Detectors for the Low-E Beamline at the CERN SPS H2 Line
Y. Hino, M. Harada, N. Meguro +7
A series of beam tests were conducted at the KEK AR test beamline in ordet to investigate the performance of a prototype detector for instrumentation in the low-E beamline at the C…
In-situ high voltage generation with Cockcroft-Walton multiplier for xenon gas time projection chamber
Shinichi Akiyama, Junya Hikida, Masashi Yoshida +17
We have newly developed a Cockcroft-Walton (CW) multiplier that can be used in a gas time projection chamber (TPC). A TPC requires a high voltage to form an electric field that dri…
Performance tests and hardware qualification of the FEBs for the Super-FGD of T2K Phase II
Lorenzo Giannessi, Franck Cadoux, Sebastien Cap +8
T2K is a long baseline neutrino experiment, entering Phase II with a Near Detector upgrade. The T2K near detector (ND280) upgrade consists of the installation of three new detector…
Performance evaluation of electron multiplier tubes as a high-intensity muon beam monitor of accelerator neutrino experiments
Takashi Honjo, Yosuke Ashida, Oderich F. Auersperg-Castell +22
Upgrade work towards increasing the beam intensity of the neutrino beamline at J- PARC is underway. Monitoring tertiary muon beams is essential for stable operation of the beamline…
Second gadolinium loading to Super-Kamiokande
K. Abe, C. Bronner, Y. Hayato +246
The first loading of gadolinium (Gd) into Super-Kamiokande in 2020 was successful, and the neutron capture efficiency on Gd reached 50\%. To further increase the Gd neutron capture…
High-pressure xenon gas time projection chamber with scalable design and its performance at around the Q value of Xe double-beta decay
Masashi Yoshida, Kazuhiro Nakamura, Shinichi Akiyama +18
We have been developing a high-pressure xenon gas time projection chamber (TPC) to search for neutrinoless double beta () decay of Xe. The unique feature of this TPC…
Scintillator ageing of the T2K near detectors from 2010 to 2021
The T2K Collaboration, K. Abe, N. Akhlaq +355
The T2K experiment widely uses plastic scintillator as a target for neutrino interactions and an active medium for the measurement of charged particles produced in neutrino interac…
SuperFGD prototype time resolution studies
I. Alekseev, T. Arihara, V. Baranov +87
The SuperFGD will be a part of the ND280 near detector of the T2K and Hyper Kamiokande projects, that will help to reduce systematic uncertainties related with neutrino flux and cr…
First Gadolinium Loading to Super-Kamiokande
K. Abe, C. Bronner, Y. Hayato +212
In order to improve Super-Kamiokande's neutron detection efficiency and to thereby increase its sensitivity to the diffuse supernova neutrino background flux, 13 tons of $\rm Gd_2(…
Study of scintillation light collection, production and propagation in a 4 tonne dual-phase LArTPC
B. Aimard, L. Aizawa, C. Alt +160
The m demonstrator is a dual phase liquid argon time projection chamber that has recorded cosmic rays events in 2017 at CERN. The light signal in these de…
The Hyper-Kamiokande Experiment -- Snowmass LOI
Kamiokande Collaboration, K. Abe, P. Adrich +387
Hyper-Kamiokande is the next generation underground water Cherenkov detector that builds on the highly successful Super-Kamiokande experiment. The detector which has an 8.4~times l…
LTARS: Analog Readout Front-end ASIC for Versatile TPC-applications
Tetsuichi Kishishita, S. Sumomozawa, T. Kosaka +9
We designed a versatile analog front-end chip, called LTARS, for TPC-applications, primarily targeted at dual-phase liquid Ar-TPCs for neutrino experiments and negative-ion -TPC…
Design and performance of a high-pressure xenon gas TPC as a prototype for a large-scale neutrinoless double-beta decay search
S. Ban, M. Hirose, A. K. Ichikawa +16
A high-pressure xenon gas time projection chamber, with a unique cellular readout structure based on electroluminescence, has been developed for a large-scale neutrinoless double-b…
AXEL: High-pressure Xe gas TPC for BG-free decay search
S. Obara, S. Ban, M. Hirose +15
AXEL is a high-pressure xenon gas time projection chamber for neutrinoless double-beta decay (0n2b) search. The AXEL has a unique readout system called ELCC which has a cellular st…
J-PARC Neutrino Beamline Upgrade Technical Design Report
K. Abe, H. Aihara, A. Ajmi +381
In this document, technical details of the upgrade plan of the J-PARC neutrino beamline for the extension of the T2K experiment are described. T2K has proposed to accumulate data c…
Prototype Analog Front-end for Negative-ion Gas and Dual-phase Liquid-Ar TPCs
Miki Nakazawa, Tetsuichi Kishishita, Masayoshi Shoji +8
We report on the recent development of a versatile analog front-end compatible with a negative-ion -TPC for a directional dark matter search as well as a dual-phase, next-genera…
A 4 tonne demonstrator for large-scale dual-phase liquid argon time projection chambers
B. Aimard, Ch. Alt, J. Asaadi +169
A 10 kilo-tonne dual-phase liquid argon TPC is one of the detector options considered for the Deep Underground Neutrino Experiment (DUNE). The detector technology relies on amplifi…
A new electron-multiplier-tube-based beam monitor for muon monitoring at the T2K experiment
Yosuke Ashida, Megan Friend, Atsuko Ichikawa +5
Muon beam monitoring is indispensable for indirectly monitoring accelerator-produced neutrino beams in real time. Though Si photodiodes and ionization chambers have been successful…
Development and operational experience of magnetic horn system for T2K experiment
T. Sekiguchi, K. Bessho, Y. Fujii +34
A magnetic horn system to be operated at a pulsed current of 320 kA and to survive high-power proton beam operation at 750 kW was developed for the T2K experiment. The first set of…
Measurement of the muon beam direction and muon flux for the T2K neutrino experiment
K. Suzuki, S. Aoki, A. Ariga +30
The Tokai-to-Kamioka (T2K) neutrino experiment measures neutrino oscillations by using an almost pure muon neutrino beam produced at the J-PARC accelerator facility. The T2K muon m…
LBNO-DEMO: Large-scale neutrino detector demonstrators for phased performance assessment in view of a long-baseline oscillation experiment
L. Agostino, B. Andrieu, R. Asfandiyarov +111
In June 2012, an Expression of Interest for a long-baseline experiment (LBNO) has been submitted to the CERN SPSC. LBNO considers three types of neutrino detector technologies: a d…
NA61/SHINE facility at the CERN SPS: beams and detector system
N. Abgrall, O. Andreeva, A. Aduszkiewicz +145
NA61/SHINE (SPS Heavy Ion and Neutrino Experiment) is a multi-purpose experimental facility to study hadron production in hadron-proton, hadron-nucleus and nucleus-nucleus collisio…
Calibration of the Super-Kamiokande Detector
K. Abe, Y. Hayato, T. Iida +130
Procedures and results on hardware level detector calibration in Super-Kamiokande (SK) are presented in this paper. In particular, we report improvements made in our calibration me…