5th Open Meeting for the Hyper-Kamiokande Project

19 Jul 2014, 09:00 → 22 Jul 2014, 17:00 Canada/Pacific

Irving K Barber Learning Centre Room 182 (University of British Columbia)

Overview

The Hyper-Kamiokande project is being designed to be the next decade's flagship experiment for the study of neutrino oscillations, nucleon decays, and astrophysical neutrinos.

Following the successful format of the previous meetings, we will hold the 5th International Open Working Group Meeting for Hyper-Kamiokande in Vancouver, Canada, on the campus of the University of British Columbia and TRIUMF.

The meeting will be open to all interested scientists and community members.

The outline of the meeting is:

• 19 July (Sat.):  Preemeetings, Prototype detector meeting, and IBR (International Board of Representatives) Meeting
• 20 July (Sun.):  Plenary Sessions, Workshop Dinner
• 21 July (Mon.): Plenary Sessions
• 22 July (Tue.):  Plenary Session till noon, followed by tour of TRIUMF.

Online payment of the registration fee of $CA100, which includes the workshop dinner on Sunday night, is available on the registration page. It also has an access to information for visa request.

The slides for the past open meetings can be found here;

• 1st Open Meeting (August 2012)
• 2nd Open Meeting (January 2013)
• 3rd Open Meeting (June 2013)
• 4th Open Meeting (January 2014)

The goal of this meeting is to further discuss the physics potentials of Hyper-K, the design of the detector, and necessary R&D items including:

• cavern excavation,
• tank liner material and its design,
• photo-sensors and their support structure,
• DAQ electronics and computers,
• calibration systems,
• water purification systems,
• software development,
• neutrino beam-line,
• near detector,
• physics potentials of Hyper-K, and so on.

In the IBR meeting on July 19th, we plan to have discussions in person on international contributions, cost-sharing among countries, and an international organization for requesting budget for R&Ds and the real detector.

Participants are encouraged to submit abstracts for talks in which to present their individual interests in topics specifically related to Hyper-K, as well as discuss possible future contributions to the project.

If you would like to contact the relevant people in our group in advance to discuss the Hyper-K project and its development work, please click the contact information menu on the right side of this page to send an email to us.

We expect that those who are interested in joining the project will come to this meeting. However, the meeting will require prior registration to participate.  Due to capacity constraints at the meeting site we urge all interested parties to register at their earliest possible convenience.

A NuPRISM workshop will be held 22 July (afternoon) to 24 July (morning), immediately following the HK workshop.

We are looking forward to seeing you in Vancouver!

Scientific Organizing Committee:
Francesca DI LODOVICO (QMUL), Mark HARTZ (Kavli IPMU), Yoshinari HAYATO (ICRR), Yusuke KOSHIO (Okayama), Neil MCCAULEY (Liverpool), Akihiro MINAMINO (Kyoto), Shun-ichi MINE (UCI), Makoto MIURA (ICRR), Tsuyoshi NAKAYA (Kyoto), Shoei NAKAYAMA (ICRR), Yasuhiro NISHIMURA (ICRR), Kimihiro OKUMURA (ICRR), Hiroyuki SEKIYA (ICRR), Masato SHIOZAWA (ICRR, chair), Yasuo TAKEUCHI (Kobe), Hidekazu TANAKA (ICRR), Hirohisa TANAKA (UBC/IPP), Mark VAGINS (Kavli IPMU), Chris WALTER (Duke), Roger WENDELL (ICRR), Masashi YOKOYAMA (Tokyo)

Local Organizing Committee:
Sampa BHADRA (York), Akira KONAKA (TRIUMF, Chair), Hirohisa TANAKA (UBC/IPP)

hk201407@km.icrr.u-tokyo.ac.jp

Slides

• Campus_Dining_2014.pdf
• hk_local_info.pdf
• IMG_9455.jpg
• mapCampus.gif
• Totem_New_Houses_info_sheet_2014_-_Individual.pdf

Saturday 19 July

09:00 → 12:05 ND pre-meeting

Convener: Prof. Mark Hartz (Kavli IPMU (WPI), The University of Tokyo/TRIUMF)

09:00 Flux Uncertainties

Speaker: Prof. Mark Hartz (Kavli IPMU (WPI), The University of Tokyo/TRIUMF)

Slides t2hk_flux_unc_hkmeeting.pdf

09:10 TITUS Introduction

Speaker: Prof. Francesca Di Lodovico (Queen Mary, University of London)

Slides TITUSintro.pdf

09:15 TITUS Gadolinium Introduction

Speaker: Matthew Malek

Slides Malek-20140719-TITUS-HKND.pdf

09:30 TITUS Gd Analysis

Speaker: Dr David Hadley (University of Warwick)

Slides talk.pdf

09:50 TITUS MRD

Speaker: Dr Mark Rayner (Université de Genève)

Slides HK_open_pre-meeting_Vancouver_2014_July.pdf

10:10 ANNIE

Speaker: Prof. Francesca Di Lodovico (Queen Mary, University of London)

Slides ANNIE.pdf

10:30 nuPRISM Overview

Speaker: Dr Michael Wilking (TRIUMF)

Slides nuPRISMHK.pdf

11:05 nuPRISM Analysis

Speaker: Dr Mark Scott (TRIUMF)

Slides nuPRISM_HyperK_preMeeting_MScott.pdf

11:40 High Pressure TPC

Speaker: Dr Morgan Wascko (Imperial College London)

Slides wascko_20140719.pdf

10:00 → 12:00 Calibration WG pre-meeting

Convener: Dr Hide-Kazu TANAKA (ICRR, University of Tokyo)

13:00 → 15:00 Prototype-detector meeting

Convener: Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)

13:00 Overview

Speaker: Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)

Slides 140719-Shiozawa-Overview.pdf

13:20 Hyper-K prototype : case study for EGADS 200t tank

Speaker: Dr Takatomi Yano (Kobe Univ.)

Slides HK_prototype_140719.pdf

13:40 DAQ plan

Speaker: Dr Yoshinari Hayato (Kamioka obs., ICRR, Univ. of Tokyo)

Slides DAQ_plan.pdf

14:00 Reports by other institutes/countries

14:20 Discussions

15:00 → 18:00 IBR meeting

Convener: Prof. Tsuyoshi NAKAYA (Kyoto)

Sunday 20 July

08:30 → 08:58 Registration

Convener: Dr Akira Konaka (TRIUMF)

08:30 Registration

Speaker: Dr Akira Konaka (TRIUMF)

08:58 → 09:00 Logistic information

Convener: Dr Akira Konaka (TRIUMF)

08:58 logistic information

Speaker: Dr Akira Konaka (TRIUMF)

Slides hkmap_v1.pdf Logistics-HK2014.pdf

09:00 → 10:30 Opening Session

Convener: Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)

09:00 Welcome

Speaker: Prof. Jonathan Bagger (TRIUMF)

09:10 Opening remark

some backgrounds, meeting goals (HK physics, detector design, foreign contributions)

Speaker: Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)

Slides 140720-Shiozawa-Opening-public.pdf

09:30 Steering committee and IBR Report

Speaker: Prof. Tsuyoshi NAKAYA (Kyoto)

Slides Steering2.pdf

09:50 European strategy

Speaker: Tatsuya NAKADA (Ecole Polytechnique Federale de Lausanne (CH))

Slides European-Strategy.pdf

10:10 HEPAP P5 report

Speaker: Prof. Hiroaki AIHARA (University of Tokyo)

Slides HEPAP_P5_Report_Aihara.pdf

10:30 → 10:50 Meeting Photo and Coffee Break

10:50 → 12:30 Message to the FNAL summit from Hyper-K (see http://www-sk.icrr.u-tokyo.ac.jp/indico/conferenceDisplay.py?confId=1949)

Slides in this session are posted on;
http://www-sk.icrr.u-tokyo.ac.jp/indico/conferenceDisplay.py?confId=1949

Convener: Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)

10:50 Physics potential of Hyper-K and complementarity (accelerator nu)

Speaker: Prof. Masashi Yokoyama (University of Tokyo)

11:00 Opportunities for a WC detector at the second Oscillation maximum at LBNF/Homestake

Speaker: Dr Akira Konaka (TRIUMF)

11:15 Physics Potential of Hyper-K and complementarity (atmospheric nu and Proton decays)

Speaker: Roger Wendell (ICRR)

11:25 Physics Potential of Hyper-K and complementarity (astrophysics)

Speakers: Prof. Chris Walter (Duke University), Dr Erin O'Sullivan (Duke University)

11:35 Discussions and Summary

Speaker: Prof. Tsuyoshi NAKAYA (Kyoto)

12:30 → 13:30 Lunch

13:30 → 14:30 Future Experiments

Convener: Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)

13:30 Overview of SNOLab

Speaker: Prof. Nigel SMITH (SNOLab)

Slides 2014_Hyper-K_Meeting_SNOLAB.pdf

13:50 Status of the Precision IceCube Next Generation Upgrade (PINGU)

The IceCube Neutrino Observatory, completed in 2010 and located at the geographic South Pole, is the largest neutrino telescope in the world. IceCube includes the more densely instrumented DeepCore subarray, which increases IceCube's sensitivity at neutrino energies down to 10 GeV. DeepCore has recently demonstrated sensitivity to muon neutrino disappearance from atmospheric neutrino oscillation. A further extension is under consideration, the Precision IceCube Next Generation Upgrade (PINGU) which would lower the energy threshold and increase the sensitivity to low energy neutrino physics. In particular, PINGU would be sensitive to the effects of the neutrino mass hierarchy, which is one of the outstanding questions in particle physics. I will discuss the status of the planned PINGU array.

Speaker: Prof. Dawn Williams (University of Alabama)

Slides hyperk_williams_pingu.pdf

14:10 WATCHMAN

WATCHMAN is a US project designed to demonstrate the feasibility of using a large gadolinium-loaded water Cherenkov detector to remotely locate clandestine nuclear reactors in uncooperative nations via their antineutrino emissions. The current status and upcoming plans for WATCHMAN in its nonproliferation role will be discussed, as well as its expected physics output.

Speaker: Prof. Mark Vagins (Kavli IPMU)

Slides WATCHMAN_HK_5th.pdf

14:30 → 14:40 Coffee Break

14:40 → 16:00 Accelerators and Beamline

Convener: Prof. Tsuyoshi NAKAYA (Kyoto)

14:40 J-PARC accelerators: status and upgrade plans

Recent operational status of the accelerators at J-PARC will be reviewed, and necessary steps towards achieving the design 750 kW beam power, and further ideas to realize MW-class beam operation, will be presented.

Speaker: Dr Taku Ishida (KEK)

Slides 140720-HKOM5-JPARCacc-Ishida-v2.pdf

15:00 Recent status of J-PARC neutrino beamline

The J-PARC neutrino beamline has had beam operation in the period May-June 2014 after a year long shutdown. Several beamline components were upgraded during the shutdown. The main upgrade was a replacement of all three magnetic horns. The new magnetic horns were upgraded to improve the acceptable beam power and to solve some known problems. The operation status of the neutrino beamline will be presented.

Speaker: Dr Tetsuro Sekiguchi (KEK)

Slides RecentStatus_J-PARC_Beamline_sekiguchi-v1.pdf

15:20 Future upgrade of the neutrino beam-line for multi-MW beam

Upgrade plan of the neutrino beam-line for multi-MW beam in coming several years is reported.

Speaker: Dr Yuichi Oyama (KEK)

Slides hk5th-t2kbl-oyama.140720.ppt

15:40 Accelerator design and modeling for the decay-at-rest neutrino experiments DAEδALUS and IsoDAR

The proposed Decay-At-rest Experiment for δCP violation At the Laboratory for Underground Science (DAEδALUS) and the Isotope Decay-At-Rest experiment (IsoDAR), search for CP violation in the neutrino sector and sterile (non-interacting) neutrinos. Both are short baseline experiments that use proton driver beams. In the IsoDAR case, a 60 MeV proton beam will impinge on a high purity lithium/beryllium target to produce isotope decay-at-rest and in DAEδALUS, 800 MeV protons will hit a carbon target to produce pion/muon decay-at-rest. The drivers are cyclotrons, because they are comparatively cheap, compact and deliver the highest intensities in the considered energy range. In order to obtain the necessary high neutrino fluxes, the primary proton beam current needs to be even higher than current state-of-the-art machines at PSI have demonstrated. This has led to a substantial R&D effort on the accelerator side of DAEδALUS and IsoDAR. In this contribution, we will report on the latest driver designs and the challenges we are faced in creating, transporting, and accelerating high intensity beams.

Speaker: Dr Daniel Winklehner (MIT)

Slides HyperK_Talk_Winklehner_upload.pdf

16:00 → 16:10 Coffee Break

16:10 → 16:30 Physics Potential

Convener: Prof. Masashi Yokoyama (University of Tokyo)

16:10 Computing framework and MC production

In this talk we will first describe the current computing infrastructure, ie the software release structure, how to access the code, the efforts to get an independent Hyper-K software code, etc. Then, we will describe the current status of the MC physics production with the latest release and how to access the simulated data.

Speaker: Prof. Francesca Di Lodovico (Queen Mary, University of London)

Slides computing.pdf

16:30 → 17:00 Message to the FNAL summit from Hyper-K (see http://www-sk.icrr.u-tokyo.ac.jp/indico/conferenceDisplay.py?confId=1949)

Slides in this session are posted on;
http://www-sk.icrr.u-tokyo.ac.jp/indico/conferenceDisplay.py?confId=1949

16:30 Summary

Speaker: Prof. Tsuyoshi NAKAYA (Kyoto)

18:00 → 18:50 Museum tour

19:00 → 21:00 Banquet

Convener: Dr Akira Konaka (TRIUMF)

Monday 21 July

09:00 → 09:55 Physics Potential

Convener: Prof. Masashi Yokoyama (University of Tokyo)

09:00 Introduction

Speaker: Prof. Masashi Yokoyama (University of Tokyo)

Slides Phys-Intro.pdf

09:10 Sensitivity of T2HK using the simple fitter

We will present the sensitivity studies for the Hyper-Kamiokande experiment assuming 7.5MW total integrated POT and 320 kA horn current. The systematic errors from a few different sources have been included: near detector (ND280) fit constrained parameters, parameters non-constrained by the near detector fit, Hyper-K detector systematics (rescaled from the Super-K one) and FSI parameters. We will describe both the studies included in the 2014 LoI and recent extensions.

Speaker: Ms Linda Cremonesi (Queen Mary University of London)

Slides LindaSENS_HK_Vancouver_2014.pdf

09:30 T2HK sensitivity studies using VaLOR

We will present sensitivity studies for T2HK assuming a total integrated beam power of 7.5MW years and a 320kA horn current. The studies presented will focus on the effect and limitations caused by the current sources of systematic errors for T2K.

Speaker: Mr raj shah (oxford university)

Slides rshah_valor_hyperk.pdf

09:40 Solar neutrino measurement in Hyper-Kamiokande

The modified sensitivity for the solar neutrino in Hyper-Kamiokande using the correct depth will be reported.

Speaker: Dr Yusuke Koshio (Okayama university)

Slides solar.pdf

09:55 → 10:15 Coffee Break

10:15 → 11:15 Cavities and Tanks

Convener: Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)

10:15 Hyper-K site and cavern

I will discuss Hyper-K candidate site and cavern construction.

Speaker: Dr Hide-Kazu TANAKA (ICRR, University of Tokyo)

Slides tanaka_20140721_cavern_v2.pdf

10:45 Hyper-K Tank

This talk will discuss current status and plan of Hyper-K tank design, and also cover status of technical design document for the tank design.

Speaker: Dr Shoei Nakayama (Kamioka Observatory, ICRR, University of Tokyo)

Slides 20140721-Nakayama-Tank-upload.pdf

11:15 → 11:40 Water System

Conveners: Dr Hiroyuki Sekiya (ICRR/IPMU), Prof. Mark Vagins (IPMU)

11:15 Water status

Topics of the talk are as follows; 1. The updated water purification system based on vacuum degasifiers instead of membrane degasifiers. 2. The results of the simulation of the water flow in the tank.

Speaker: Dr Hiroyuki Sekiya (ICRR/IPMU)

Slides 2014Jul_Water_pub.pdf

11:30 Gd Status

The current status of and plans for EGADS, the main Gd test facility for Super-K and Hyper-K, will be discussed.

Speaker: Prof. Mark Vagins (IPMU)

Slides Gad_HK_5th.pdf

11:40 → 12:40 Lunch

12:40 → 13:50 Photodetectors

Conveners: Dr Shoei Nakayama (Kamioka Observatory, ICRR, University of Tokyo), Dr Yasuhiro NISHIMURA (ICRR)

12:40 Overview of the photodetector development

I will present a brief introduction of current activities in the photodetector sub-WG and the plan for the photodetector development.

Speaker: Dr Shoei Nakayama (Kamioka Observatory, ICRR, University of Tokyo)

Slides 20140721-Nakayama-HKPDintro.pdf

12:50 Viability test of photodetectors in the water tank

In August 2013, eight hybrid photodetectors (HPDs) with 20-cm diameter and five 50-cm High-QE (HQE) photomultiplier tubes (PMTs) have been installed into a water tank and a validity test started. I will present a progress and results on the 20-cm HPDs and 50-cm HQE PMTs test in the water tank and a status and plan for a next test with new 50-cm box-and-line dynode PMTs.

Speaker: Mr Yuji Okajima (Tokyo Institute of Technology)

Slides Viability_test_of_photodetectors_in_the_water_tank.pdf

13:10 New 50-cm diameter photodetectors

We have been developing 50-cm diameter Box&line PMTs and Hybrid Photo-Detectors (HPDs) for Hyper-Kamiokande. Both have excellent performance compared with Super-Kamiokande PMT. We present the principle and basic performance (typical waveforms, timing response, dark count rate, linearity and response uniformity) and the result of the pre-calibration for a test in a 200-ton water Cherenkov detector (EGADS tank).

Speaker: Mr Yusuke Suda (University of Tokyo)

Slides YusukeSuda_5thHKopenMtg.pdf

13:30 A status and prospect of the photodetector development in Kamioka

The R&D of photosensors and plan in Kamioka, Japan, are presented.

Speaker: Dr Yasuhiro NISHIMURA (ICRR)

Slides 20140721_HKPDJP_Nishimura.pdf

13:50 → 14:50 DAQ and Electronics System

Convener: Dr Yoshinari Hayato (Kamioka obs., ICRR, Univ. of Tokyo)

13:50 DAQ work plan ( general + Japan & US )

Speaker: Dr Yoshinari Hayato (Kamioka obs., ICRR, Univ. of Tokyo)

Slides DAQ_intro.pdf

14:05 Development of the next generation digital optical module for IceCube upgrades

This talk will present the status of the next generation digital optical module being designed for the IceCube upgrade detectors.

Speaker: Mr Perry Sandstrom (WIPAC)

Slides HYPER-K_PINGU_Next_Generation_DOM_Upgrade_E.pdf

14:20 UK DAQ plans for Hyper-Kamiokande

Within the UK, several institutions will participate in the development of Data Acquisition systems (DAQ) for the Hyper-Kamiokande experiment. This talk will discuss UK interests, physics considerations for the design of the DAQ and progress towards a conceptual design.

Speaker: Dr Helen O'Keeffe (Lancaster University)

Slides OKEEFFE_DAQ_UK.pdf

14:35 DAQ R&D status in Canada

Speaker: Dr Fabrice Retiere (Triumf)

Slides HKElecJuly2014.pdf HKElecJuly2014.pptx

14:50 → 15:10 Coffee Break

15:10 → 16:40 Softwares and Detector optimization

Conveners: Prof. Chris Walter (Duke University), Prof. Francesca Di Lodovico (Queen Mary, University of London), Dr Makoto Miura (Kamioka Observatory, ICRR, University of Tokyo)

15:10 Introduction for software session

This is a introduction talk for the software session. It shows what are going to be discussed in the session.

Speaker: Dr Makoto Miura (Kamioka Observatory, ICRR, University of Tokyo)

Slides SW-intro.pdf

15:20 Study of detector setup in WCSim

Baseline design of the Hyper-Kamiokande detector has been implemented in WCSim, a simulation software developed to study the detector design and physics potential of HK. In addition, implementation of new photo sensors and other detailed detector components are ongoing to evaluate the impact on the performance of the HK detector, including the energy resolution and particle identification. In this talk, current status and future plan of simulation software development are presented.

Speaker: Mr Yuji Okajima (Tokyo Institute of Technology)

Slides Study_of_detector_setup_in_WCSim.pdf

15:50 WCsim and bonsai reconstruction tool

Bonsai is a reconstruction algorithm for low energy events at Super-K. Here, R&D of bonsai with WCsim and application for Hyper-K will be reported.

Speaker: Dr Takatomi Yano (Okayama Univ.)

Slides HK_software_140721.pdf

16:02 Hyper-Kamiokande Event Reconstruction (fiTQun) Status

The current status of the fiTQun event reconstruction for Hyper-Kamiokande events will be presented.

Speakers: Prof. Blair Jamieson (University of Winnipeg), Dr Michael Wilking (TRIUMF)

Slides fiTQunHK.pdf

16:27 Summary of the Software session and Prospects

I will summarize developments of software towards Hyper-K and show some prospects.

Speaker: Dr Makoto Miura (Kamioka Observatory, ICRR, University of Tokyo)

Slides SW-summary.pdf

16:40 → 17:00 Coffee Break

17:00 → 18:05 Detector Calibrations

Conveners: Dr Hide-Kazu TANAKA (ICRR, University of Tokyo), Mr Hirohisa A. Tanaka (University of British Columbia/Institute of Particle Physics), Dr Neil McCauley (University of Liverpool), Shunichi Mine (UCI), Dr Yusuke Koshio (Okayama university)

17:00 HK calibration overview

I will discuss overview of HK calibration R&D and prototyping projects.

Speaker: Dr Hide-Kazu TANAKA (ICRR, University of Tokyo)

Slides tanaka_20140721_calib.pdf

17:05 LED Pulsers as Light Sources for Calibration

LED pulsers can provide nanosecond scale pulses ideal for the calibration of Hyper-Kamiokande. The latest developments in the design of a prototype driver for Hyper-Kamiokande in the UK will be presented.

Speaker: Dr Neil McCauley (University of Liverpool)

Slides UK_Calibration_5th_open_meeting.pdf

17:20 Calibration source deployment system

Because of the large detector, Hyper-K will need an automated calibration source deployment system. Here, the status of R&D of automated calibration source deployment system will be reported.

Speaker: Dr Takatomi Yano (Kobe Univ.)

Slides 2014July_HK_OpenMeeting_Calib.pdf

17:35 Status of the Photosensor Testing Facility

I will discuss the status of the Photosensor Testing Facility (PTF) which is currently being built at TRIUMF. The PTF will measure the optical properties (acceptance, reflectivity, ...) of the PMTs under investigation for Hyper-Kamiokande using two robotic gantries.

Speaker: Dr Tom Feusels (University of British Columbia)

Slides TomF_HKworkshop_21July2014.pdf

17:50 SNO+ Detector: Design and Calibration

SNO+ is a 780-ton liquid scintillator detector that aims at measuring neutrinoless double beta decay of Te-130 using the underground facility at SNOLAB and the original SNO detector. In this talk, the SNO+ detector design and calibration hardware will be presented with an overview of the new physics goals and potential.

Speaker: Dr Szymon Manecki (Queen's University)

Slides SzM_SNOPlus_Calibration_2014.07.21.pdf

Tuesday 22 July

09:00 → 11:20 Flux and Near Detectors

Convener: Prof. Mark Hartz (Kavli IPMU (WPI), The University of Tokyo/TRIUMF)

09:00 Introduction

Speaker: Prof. Mark Hartz (Kavli IPMU (WPI), The University of Tokyo/TRIUMF)

Slides t2hk_ndflux_session_overview.pdf

09:05 Water-based Liquid Scintillator

The newly developed, water-based liquid scintillator (WbLS) is an advanced scintillation liquid for future massive detectors with the unique capability of exploring physics below the Cherenkov threshold and has the ability of loading any (hydrophilic) metallic ions of interest for neutron tagging or other physics enhancements. The same water-based detector could also be used as a near detector for long baseline neutrino flux monitoring and an active water target for neutrino cross section measurement. In this presentation, the application of WbLS to a variety of physics topics will be discussed. *Research sponsored by the U.S. Department of Energy, Office of Nuclear Physics and Office of High Energy Physics, under contract with Brookhaven National Laboratory – Brookhaven Science Associates

Speaker: Dr Minfang Yeh (Brookhaven National Laboratory)

Slides water-based_liquid_scintillator_and_isotope_loading.pdf

09:30 Sensitivity Studies for Near Detectors in a Tokai-to-Hyper-K Experiment

The sensitivities for measuring CP violation and other neutrino oscillation parameters in a Tokai-to-Hyper-K long baseline experiment depend on systematic uncertainties in the neutrino flux and cross section models. These model uncertainties are constrained by data from near detectors. In this talk, I will present studies of the effect of near detector data on the CP violation sensitivity for different assumptions about the properties of the near detector, including its distance from the neutrino production point, the direction to the near detector, and the target material of the near detector.

Speaker: Prof. Mark Hartz (Kavli IPMU (WPI), The University of Tokyo/TRIUMF)

Slides t2hk_flux_unc_hkmeeting.pdf

09:45 TITUS selection with Gd

The TITUS detector is an original multi-purpose new detector for the Hyper-K experiment, located 2 km from the J-PARC neutrino beam. TITUS consists of a gadolinium-doped water Cherenkov detector, partially enclosed by a muon range detector (MRD) The detector will be exposed to a neutrino flux similar to the Hyper-K far detector, minimising the uncertainty on the near-to-far extrapolation. The addition of Gadolinium allows neutron tagging which will provide discrimination between neutrino and anti-neutrino, and measurement of multi-nucleon interactions. Recent developments in the design of the TITUS water tank as well as software and physics analysis will be presented.

Speaker: Dr David Hadley (University of Warwick)

Slides titus_plenary.pdf

10:05 A magnetized muon range detector for the 2km TITUS detector

This talk will describe the advantages of surrounding the proposed 2km TITUS water Cherenkov with a magnetized iron range detector. The benefits for sample size, energy resolution and charge reconstruction will be discussed.

Speaker: Dr Mark Rayner (Université de Genève)

Slides HK_open_plenary_Vancouver_2014_July.pdf

10:25 The nuPRISM Near Detector

In order to reach the projected T2HK physics sensitivities, a better understanding of neutrino interaction uncertainties is required. The nuPRISM detector concept is a novel new technique to directly measure neutrino interaction final states for any oscillated spectra at Hyper-K. This removes neutrino interaction uncertainties from the accelerator-based oscillation measurements, and provides the first ever direct experimental constraint on the relationship between lepton kinematics (what experiments observe) and neutrino energy (what experiments wish to measure). In addition, nuPRISM provides a highly sensitive probe of the MiniBooNE sterile neutrino oscillation signal. Other measurements, such as unique cross section measurements, including the first ever measurements of neutral current cross sections as a function of neutrino energy, are also possible. The feasibility and current analysis status for a nuPRISM detector for Hyper-K will be presented.

Speaker: Dr Michael Wilking (TRIUMF)

Slides nuPRISMHK.pdf

10:45 Short and long baseline sensitivities with nuPRISM

The nuPRISM detector concept provides a powerful tool for neutrino physics, using measurements at multiple off-axis angles to produce oscillated or mono-energetic neutrino beams. This talk describes the current long baseline sensitivity studies with nuPRISM, quantitatively demonstrating the benefits this technique brings to oscillation analyses. It will also discuss the short baseline sensitivities, comparing these to the MiniBooNE sterile searches.

Speaker: Dr Mark Scott (TRIUMF)

Slides nuPRISM_HyperKMeeting_MScott.pdf

11:20 → 11:40 Break

11:40 → 12:10 Discussion

Convener: Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)

11:40 Discussions

Slides 140722-Shiozawa-Discussion.pdf

14:00 → 17:00 TRIUMF tour

Convener: Dr Akira Konaka (TRIUMF)