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4th Open Meeting for the Hyper-Kamiokande Project

27–28 Jan 2014
Asia/Tokyo timezone

Contribution List

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  1. 9. Registration
    27/01/2014, 08:30
  2. 38. Opening remark
    Prof. Masato Shiozawa (Kamioka Observatory, ICRR, The University of Tokyo)
    27/01/2014, 09:00
    Opening Session
    Opening Session
    Opening remark
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  3. 39. Steering group report
    Prof. Tsuyoshi Nakaya (Kyoto University)
    27/01/2014, 09:15
    Opening Session
    Opening Session
    Steering group report
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  4. 40. Status of the J-PARC accelerators / neutrino facility and their upgrade plans
    Dr Taku Ishida (KEK)
    27/01/2014, 09:30
    Neutrino Beamline
    J-PARC and Beamline
    Status of the J-PARC accelerators / neutrino facility and their upgrade plans
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  5. 36. The ESSnuSB project
    Prof. Tord Ekelof (Uppsala University)
    27/01/2014, 10:00
    Neutrino Beamline
    J-PARC and Beamline
    We are making a Design Study of a neutrino Super Beam long base line (500 km) experiment ESSnuSB based on the use of the European Spallation Source (ESS) 5 MW, 2 GeV proton linac and a Megaton water Cherenkov detector to discover leptonic CP violation, performing measurements at the second oscillation maximum, where the sensitivity to CP violation is significantly higher than at the first...
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  6. 35. Introduction
    Prof. Masashi Yokoyama (University of Tokyo)
    27/01/2014, 10:45
    Introduction to the "Physics Potential and Near Detectors" session
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  7. 26. Sensitivity studies for Tokai to Hyper Kamiokande
    Dr Christophe Bronner (Kyoto University), Ms Linda Cremonesi (Queen Mary University of London)
    27/01/2014, 10:55
    We will describe sensitivity studies done after the Hyper-Kamiokande LOI by adapting the code used for sensitivity studies in T2K, first to reproduce the results of this LOI and later study the effect of using the fiTQun pi-zero rejection cut and including the muon neutrino sample, as well as requirements for the near detectors constraints.
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  8. 27. HyperK sensitivity study using the VALOR T2K joint 3-flavour analysis
    Mr Shah Raj (Oxford University)
    27/01/2014, 11:25
    Will present initial results from a HyperK sensitivity study using the well-established VALOR joint 3-flavour oscillation analysis. This analysis performs simultaneous fits of the HyperK single muon-like ring and single electron-like ring event reconstructed energy distributions in a framework of 3 active neutrino oscillations including matter effects. Near detector constraints from the 2013...
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  9. 20. Flux Extrapolation Uncertainties from Tokai to Hyper-K
    Prof. Mark Hartz (Kavli IPMU (WPI), University of Tokyo/TRIUMF)
    27/01/2014, 13:05
    Preliminary sensitivity studies for a CP violation measurement with a Tokai-to-HyperK neutrino beam suggest that 2% systematic errors are required to remain statistics limited. We investigate the uncertainty on the flux extrapolation from potential near detector sites in Tokai, including the current ND280 site and potential sites out to 2 km from the neutrino beam production point. We...
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  10. 6. A New Near Detector at Intermediate Disastance for Hyper-Kamiokande
    Prof. Francesca Di Lodovico (Queen Mary, University of London)
    27/01/2014, 13:25
    A description of the studies on a new near detector at intermediate distances (around 2km or so) for Hyper-Kamiokande is presented, along with a description of the possible benefits and design.
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  11. 30. The nuPRISM Near Detector: Constraining Neutrino Energy Using Multiple Off-Axis Angles
    Dr Michael Wilking (TRIUMF)
    27/01/2014, 13:45
    At the previous Hyper-K meeting, the idea for a long water Cherenkov detector that spans multiple off-axis angles was presented. Using this configuration, it is possible to constrain the relationship between lepton kinematics and neutrino energy from the neutrino beam information, rather than relying solely on model-dependent neutrino generator extrapolations. Several details of this detector...
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  12. 7. LoI to J-PARC PAC
    Masashi Yokoyama (University of Tokyo)
    27/01/2014, 14:05
    Goals and schedule for the Letter of Intent to be submitted to J-PARC PAC will be discussed.
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  13. 18. The DAEdALUS at Hyper-K Experiment: Searching for CP Violation
    Prof. Michael Shaevitz (Columbia University)
    27/01/2014, 14:20
    DAEdALUS is a phased program leading to a high-sensitivity search for CP violation. The experiment uses a set of high-intensity 800 MeV cyclotrons to produce pion decay-at-rest neutrino sources at several locations (with baselines of 1.5km, 8km, and 20km) going to the Hyper-K ultra-large, underground detector. The Hyper-K detector would be used to isolate and measure a very large sample of...
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  14. 2. Supernova Relic Neutrino search with Hyper-Kamiokande
    Dr Takatomi Yano (Okayama Univ.)
    27/01/2014, 15:05
    The sensitivity of SRN in HK is reported for several cosmic ray intensity case. The cosmic muon flux in HK is also reported.
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  15. 28. Hyper-K site and cavern
    Dr Hide-Kazu TANAKA (ICRR)
    27/01/2014, 15:30
    Cavity and Tanks
    Cavities and Tanks
    This talk will discuss current status and plan of geological survey at Mozumi site, and also cover status of technical design document for HK cavern construction.
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  16. 29. Hyper-K tank
    Dr Shoei Nakayama (Kamioka Observatory, ICRR, The University of Tokyo)
    27/01/2014, 16:00
    Cavity and Tanks
    Cavities and Tanks
    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.
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  17. 41. Summary
    Prof. Masato Shiozawa (Kamioka Observatory, ICRR, The University of Tokyo)
    27/01/2014, 16:30
    Cavity and Tanks
    Cavities and Tanks
    Summary
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  18. 31. Institute Representative Meeting
    27/01/2014, 16:40
  19. 42. Software Group
    27/01/2014, 17:40
  20. 32. Sub-WG Meetings
    27/01/2014, 17:40
  21. 8. Overview of the photodetector development
    Dr Shoei Nakayama (Kamioka Observatory, ICRR, The University of Tokyo)
    28/01/2014, 09:00
    Photo-detector and Support
    Photodetectors
    I will present a brief introduction of current activities in the photodetector sub-WG and the plan for the photodetector development.
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  22. 21. Measurement of large-aperture photodetectors in a water tank
    Dr Yasuhiro NISHIMURA (ICRR)
    28/01/2014, 09:10
    Photo-detector and Support
    Photodetectors
    New large aperture photodetectors for Hyper-Kamiokande are under development and these usability is tested. For the first proof test, high-QE photomultiplier tubes (51 cm Φ) and hybrid photodetectors (20 cm Φ) have been measured in a 200-ton water tank in Kamioka, Japan. These installation, calibration and performance evaluation, and development status of other new photodetectors will be presented.
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  23. 19. Status of Texas PMTs
    Robert Svoboda (UC Davis)
    28/01/2014, 09:40
    Photo-detector and Support
    Photodetectors
    Current status of development of 11 inch HQE PMTs from ADIT/ETEL. Schedule for delivery of prototypes and planned testing. Possible use in WATCHMAN.
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  24. 22. Enhanced light collection with photon trap
    Dr Jean-Michel Poutissou (TRIUMF)
    28/01/2014, 09:55
    Photo-detector and Support
    Photodetectors
    We investigate the performance of photon traps for enhancing the light collection efficiency within the Hyper-Kamokiokande detector. Cerenkov photons enter the trap by going through a dichroic mirror transmitting UV and blue light and reflecting green light. Some Cerenkov photons are detected directly by a PMT while the others are absorbed in a wavelength shifting plate that reemit green...
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  25. 12. DAQ session ~ Introduction
    Dr Yoshinari Hayato (Kamioka obs., ICRR, Univ. of Tokyo)
    28/01/2014, 10:40
    DAQ and Electronics
    DAQ and Electronics System
    Conveners' summary
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  26. 11. HK FADC Digitization and Communication Work
    Dr Thomas Lindner (Triumf)
    28/01/2014, 10:55
    DAQ and Electronics
    DAQ and Electronics System
    We report on two separate research projects related to HK electronics. First, we are exploring the idea of using Flash ADCs (FADCs) for digitizing the HK PMT signals (rather than ADC/TDC digitization). We have done simple tests at TRIUMF of the timing resolution achievable with FADCs. We are also thinking about how to quantify the benefits of FADCs. Second, we are investigating...
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  27. 25. DAQ plans for HK
    Francesca Di Lodovico (Queen Mary, University of London)
    28/01/2014, 11:15
    DAQ and Electronics
    DAQ and Electronics System
    Several UK institutions will participate in the development of Data Acquisition Systems (DAQ) for the prototype and full-scale detectors. We present an overview of considerations towards a conceptual design for a DAQ system and UK interests in this area.
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  28. 45. T2HK discussion (Flux/ND inputs to the J-PARC LOI)
    28/01/2014, 12:00
  29. 13. Introduction of Software session
    Dr Makoto Miura (Kamioka Observatory, ICRR, University of Tokyo)
    28/01/2014, 13:00
    Software
    Softwares
    A review of the status of software at the previous meeting and what we will discuss in this session will be presented.
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  30. 14. Development of WCSim
    Dr Alex Himmel (Duke University), Mr Yuji Okajima (Tokyo Institute of Technology)
    28/01/2014, 13:05
    Software
    Softwares
    WCSim is a simulator for water cherenkv detectors and we have developed it for Hyper-K detector simulation. We have compared WCSim with skdetsim which is used in Super-K. To determine a detector configuration of Hyper-K, simulations of HPD are going to install on WCSim. Also an event display for WCSim will be discussed here.
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  31. 15. Development of event reconstruction software for Hyper-K
    Dr Blair Jamieson (University of Winnipeg), Dr Michael Wilking (TRIUMF)
    28/01/2014, 13:30
    Software
    Softwares
    fiTQun is a event reconstruction software based on maximum likelihood method and it can determine physics variables (vertex, direction, number of rings, momentum, PID) at once. It was originally developed for Super-K analysis and it could be event reconstruction software also for Hyper-K. Here we will report about status of fiTQun for Hyper-K,
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  32. 5. Computing Model for Hyper-Kamiokande
    Prof. Francesca Di Lodovico (Queen Mary, University of London)
    28/01/2014, 14:00
    Software
    Softwares
    A description of the current computing model strategy for Hyper-Kamiokande is provided. The results from the current simulation production are presented and plans for the simulation production for the LoI shown.
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  33. 16. Summary and toward determination of detector configuration
    Dr Makoto Miura (Kamioka Observatory, ICRR, University of Tokyo)
    28/01/2014, 14:20
    Software
    Softwares
    I will summarize the status of software and discuss plan, especially strategy to determine detector configuration of Hyper-K.
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  34. 0. Water Status
    Dr Hiroyuki Sekiya (ICRR/IPMU)
    28/01/2014, 14:55
    Water System
    Water System
    HK water system and tank water flow design updates
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  35. 17. Gd Status
    Prof. Mark Vagins (IPMU)
    28/01/2014, 15:10
    Water System
    Water System
    The current status of gadolinium-in-water R&D studies, particularly the ongoing EGADS project, will be discussed.
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  36. 4. Overview and plan
    Dr Hide-Kazu TANAKA (ICRR, University of Tokyo)
    28/01/2014, 15:20
    Detector Calibration
    Detector Calibrations
    This talk will overview HK calibration WG status and plan, and give a brief introduction to HK calibration R&D programs.
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  37. 23. New source inserting system for SK as an R&D of HK calibration
    Dr Atsumu Suzuki (Kobe University)
    28/01/2014, 15:30
    Detector Calibration
    Detector Calibrations
    Current SK calibration is done by inserting sevarel calibration sources from the holes at the top of the tank manually in the dark. So we, Kobe group, are planning to set the source inserting system using a winch with a wire eoncoder controlled by PC. This is also the first step of R&D of the HK calibration system. The target position precision of the system is less than 1cm. By using a gate...
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  38. 1. Pulsed LEDs as a light source for calibration
    Dr Neil McCauley (University of Liverpool)
    28/01/2014, 15:45
    Detector Calibration
    Detector Calibrations
    Pulsed LEDs provide an alternative light source for calibration and have been used in other experiments. I will present information on previous LED pulers and discuss their potential application for calibration in hyper-kamiokande.
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  39. 3. Neutron Generators for Calibration
    Roger Wendell (ICRR)
    28/01/2014, 16:00
    Detector Calibration
    Detector Calibrations
    This talk will present neutron generators as calibration sources in water Cherenkov detectors. Discussion will include a description of existing sources as well as present ideas for a future compact neutron generator.
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  40. 33. Discussion
    28/01/2014, 16:15
  41. 34. J-PARC LOI Meeting
    28/01/2014, 16:45
  42. 37. Decomposing Neutrino Oscillation in the Propagation Basis
    Dr Shao-Feng Ge (KEK Theory Center)
    Physics Potential
    A general formalism of decomposing event rates in the propagation basis is established to study the neutrino oscillation phenomena. The contributions from the neutrino mass hierarchy, the atmospheric mixing angle and its octant, as well as the CP phase can be analytically disentangled in this formalism which is extrmely useful in the study of atmospheric neutrino oscillation that experiences...
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