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Open Meeting for the Hyper-Kamiokande Project

21–23 Aug 2012
Kavli Institute for the Physics and Mathematics of the Universe (Kavli IPMU), The University of Tokyo
Asia/Tokyo timezone

Contribution List

53 out of 53 displayed
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  1. 2. Reception
    21/08/2012, 17:00
  2. 1. Registration (1)
    21/08/2012, 17:00
  3. 3. Registration (2)
    22/08/2012, 08:00
  4. 18. HEP and Neutrino Project status (Japan/Asia)
    Prof. Yasuhiro OKADA (KEK)
    22/08/2012, 09:00
    Status of HEP and Neutrino Project in Japan and Asia. The KEK status is also reported.
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  5. 19. Neutrino Project status (USA)
    Robert Svoboda (UC Davis)
    22/08/2012, 09:25
    US neutrino project status
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  6. 20. Neutrino Project Status (Europe)
    Prof. Andre Rubbia (ETH Zurich)
    22/08/2012, 09:50
    European Neutrino project status
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  7. 21. Japan HEP future project subcommittee report
    Prof. Toshinori MORI (ICEPP, Tokyo)
    22/08/2012, 10:40
    Japan HEP future project subcommittee report
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  8. 22. Japan CRC future project subcommittee report
    Prof. Nobuyuki KANDA (Osaka City)
    22/08/2012, 11:00
    Japan CRC (Cosmic-Ray-Committee) future project subcommittee report
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  9. 9. Goals of the meeting
    Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)
    22/08/2012, 11:20
    In the opening session, I'd like to give a kind of guideline of discussions in the meeting. First goal is to form active working groups for each development works including physics potential studies. Proposal for the organization structure and timeline will be given. I'd like to also present future prospect of the project in terms of forming international collaboration, budget request, etc.
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  10. 14. J-PARC Status
    Prof. Yujiro IKEDA (JAEA)
    22/08/2012, 13:00
    J-PARC Status
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  11. 13. J-PARC upgrade
    Prof. Tadashi KOSEKI (KEK)
    22/08/2012, 13:25
    J-PARC upgrade.
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  12. 28. Long baseline experiment and proton decay search using Hyper-K
    Prof. Masashi Yokoyama (University of Tokyo)
    22/08/2012, 13:55
    I will review the physics potential of a long baseline experiment using J-PARC neutrino beam and Hyper-K, and proton decay search in Hyper-K.
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  13. 48. Systematics in CPV measurement
    Dr Shoei Nakayama (Kamioka Observatory, ICRR, University of Tokyo)
    22/08/2012, 14:25
    Discuss about important systematic errors for the CPV measurement
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  14. 27. Towards Reduced Neutrino Flux & Interaction Uncertainties for a J-PARC to Hyper-K Experiment
    Dr Mark Hartz (University of Toronto/York University)
    22/08/2012, 14:40
    The Hyper-K letter of intent discusses the physics potential to measure delta_cp by a J-PARC to Hyper-K long baseline experiment assuming systematic errors for the signal and background that are controlled at the 5% level. Reducing uncertainties in neutrino flux and interaction modeling will be crucial to achieve 5% uncertainties. The T2K experiment, which uses the J-PARC neutrino beam, an...
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  15. 46. Irreducible Cross-Section Uncertainties for Electron Neutrino Appearance?
    Kevin McFarland (University of Rochester)
    22/08/2012, 15:00
    The usual strategy for controlling systematic uncertainties due to neutrino interactions in oscillation experiments is to use the same beam, or data from other experiments, to constrain those uncertainties. In this brief discussion, I point out a few limitations in this technique that may be problematic for oscillation physics in the high precision era, and I will suggest some possible remedies.
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  16. 49. Atmospheric Neutrino Oscillations at Hyper-Kamiokande
    Dr Roger Wendell (ICRR)
    22/08/2012, 15:20
    Recently experimental measurements of reactor, atmospheric, and solar neutrinos have provided an increasingly clear picture of neutrino oscillations. However, several open issues including the nature of the neutrino mass hierarchy, the octant of $\theta_{23}$, and whether or not neutrinos are CP-violating, remain. Atmospheric neutrinos are capable of addressing these questions due to the...
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  17. 52. Cosmic background study for atm. nu and proton decay
    Prof. Kimihiro Okumura (ICRR)
    22/08/2012, 15:45
    Effect of cosmic background for atm. nu and proton decay will be discussed.
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  18. 42. Solar neutrinos and supernova burst neutrinos at Hyper-Kamiokande
    Dr Yusuke Koshio (Kamioka observatory, ICRR, Univ. of Tokyo)
    22/08/2012, 16:25
    n this presentation, the sensitivity of solar neutrinos is discussed. In the case of shallow place, the most serious background will be spallation products induced from cosmic ray muons. How much reduce background by improving an analysis method will be estimated. Using this result, the requirement for the solar neutrino physics, such as the constraint to delta-m-square_21, is discussed. The...
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  19. 29. Supernova neutrino astronomy with Hyper-Kamiokande
    Dr Shunsaku Horiuchi (CCAPP, Ohio State University)
    22/08/2012, 16:50
    The diffuse supernova neutrino background (DSNB) is the faint glow of MeV neutrinos from distant core-collapse supernovae. It has not been detected yet, but the Super-K upper limit on the flux of electron antineutrino is very close to modern predictions. Hyper-K is expected to detect dozens of DSNB neutrinos yearly. In addition, Hyper-K will open a new window of neutrinos from core collapses...
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  20. 45. Dark Matter Sensitivity Studies
    Dr Carsten Rott (CCAPP / Ohio State University)
    22/08/2012, 17:15
    Hyper-Kamiokande will have a tremendous potential for the detection of neutrino signals from dark matter annihilations. The talk will give an overview of analysis methods and dark matter detection channels relevant for Hyper-K. The talk will conclude by giving dark matter sensitivities and by pointing out specific instrumental details that will help to optimize the physics potential for Hyper-K.
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  21. 10. Excavation of the Hyper-K cavern
    Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)
    22/08/2012, 17:35
    The baseline design of the HK cavern and construction schedule, ongoing optimization works, remaining issues will be explained in this talk.
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  22. 50. The LAGUNA Feasibility Study for the LSC to Host a Next-Generation Mega-ton type Neutrino and Nucleon Decay Experiment
    Prof. Luis Labarga (Departamento de Física Teórica, Universidad Autónoma de Madrid)
    22/08/2012, 17:55
    A very detailed feasibility study for the "Canfranc Underground Laboratory" (LSC) to host a Next-Generation Mega-ton type Neutrino and Nucleon Decay Experiment was carried out within the EU funded LAGUNA program (E.U. Grant Agreement No. 212343 FP7-INFRA-2007-1). All fundamental aspects were covered: geological, geotechnic, environmental, socio-economical etc. A pre-design of the the main...
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  23. 11. Hyper-K liner and PMT support
    Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)
    22/08/2012, 18:10
    The design of liner and related studies will be presented in the meeting. In the baseline design of the PMT support, SUS support like the Super-K is presented in the Letter of Intent. We are investigating a possibility of cost reduction by hanging PMTs by wires.
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  24. 17. Water containment and PMT deployment designs for the LBNE water detector
    Jim Stewart (BNL)
    22/08/2012, 18:30
    The design considerations for the water containment system and the PMT deployment systems for the LBNE water Cherenkov detector will be presented. Several design alternatives for the membrane liner for the water Cherenkov detector were investigated and a summary of these investigations will be presented. Several alternate designs for the PMT mounting scheme were also investigated as part of...
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  25. 41. Studies of a "thin" veto for LBNE
    Robert Svoboda (UC Davis)
    22/08/2012, 18:50
    A prototype veto system was designed and built for LBNE that used a veto system only 85 cm thick with minimal PMT coverage. The design and efficiency measurements are presented.
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  26. 4. Party
    22/08/2012, 19:10
  27. 24. Basic water plan for Hyper-K
    Dr Hiroyuki Sekiya (ICRR)
    23/08/2012, 09:00
    The grand design of Hyper-K water and the detail of the pure water system including the flow in the tank will be presented.
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  28. 23. Gd Option for Hyper-K
    Prof. Mark Vagins (Kavli IPMU)
    23/08/2012, 09:25
    A water system design which allows the use of dissolved gadolinium sulfate in Hyper-Kamiokande will be discussed, along with the current status of Super-Kamiokande's gadolinium R&D project.
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  29. 15. Benefits of and progress towards massive water-based liquid scintillator detectors
    David Jaffe (BNL)
    23/08/2012, 09:45
    Recent research and development towards Water-based Liquid Scintillator (WbLS) appears to suggest that such materials can be made stable and economical in large quantities. This opens the possibility to detect low energy particles below the Cherenkov threshold that are inaccessible to a water Cerenkov detector. It also enhances the scientific agenda of future large water Cherenkov detectors....
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  30. 25. Hybrid Photo-Detector study at Kamioka
    Dr Yasuhiro NISHIMURA (ICRR)
    23/08/2012, 10:05
    Hybrid Photo-Detector (HPD) with an avalanche diode is one of the photo-sensor candidates for Hyper-K. It is considered to have a better performance in lower price than PMT in Super-K. We started a study of an 8-inch HPD developed by Hamamatsu Photonics and that of a 20-inch diameter will be provided within a few years. In Kamioka mine we have a plan to test the HPD in a 200-ton water...
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  31. 30. LBNE photosensor R & D including light collection options
    Robert Svoboda (UC Davis)
    23/08/2012, 10:55
    LBNE photosensor R&D including light collection options
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  32. 7. Mechanical Performance of Large Format Underwater Photo-multiplier
    Dr Jiajie Ling (Brookhaven National Laboratory)
    23/08/2012, 11:10
    Large, deep, well shielded liquid detectors have become an important technology for the detection of neutrinos over a wide dynamic range of a few MeV to TeV. The critical component of this technology is the large format semi-hemispherical photo-multiplier tube with diameters in the range of 25 to 50cm. The survival of an assembled array of these photo-multiplier tubes under high hydrostatic...
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  33. 34. Photomultiplier Tube Glass Failure in Neutrino Detection: Challenges and Opportunities
    Prof. S. K. Sundaram (Kazuo Inamori School of Engineering, Alfred University)
    23/08/2012, 11:25
    We have undertaken a detailed investigation of photomultiplier tube (PMT) glass fracture at Alfred University, in support of Brookhaven National Laboratory’s Long Baseline Neutrino Experiment (LBNE). The strength and lifetime prediction of the PMT glass are crucial to the success of the neutrino detection. Glass fracture is statistical in nature. Glasses are generally under constant state of...
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  34. 16. Photo-detector development for maximizing the overall photon detection efficiency
    Dr Fabrice Retiere (TRIUMF)
    23/08/2012, 13:00
    The baseline Hyper-K concept relies on 99,000 20” photomultiplier tubes (PMTs) to provide 20% photo-coverage. We are investigating solutions that would enhance the photo-coverage without compromising either contrast or timing resolution. Contrast roughly quantifies the fraction of photons detected that retain the Cerenkov light directional information over the total number of photons detected,...
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  35. 44. Development of a Large Area Photodetector with a Fast Phosphor Anode
    Prof. Toru Iijima (Nagoya University)
    23/08/2012, 13:15
    The next generation neutrino experiments like the Hyper-Kamiokande requires cost-effective ways to instrument large volumes with O(10^(4−5)) pieces of photodetectors. Such photodetectors are required to have good effective quantum efficiency, large active area, high gain to allow use of simple and cheap electronics, and good time resolution to reconstruct the wave front of the Cherenkov cone....
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  36. 32. Current baseline design of HK DAQ system
    Dr Yoshinari Hayato (Kamioka obs., ICRR, Univ. of Tokyo)
    23/08/2012, 13:30
    Report the current idea of the HK DAQ system
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  37. 39. Overview of software development towards Hyper-K
    Dr Makoto Miura (Kamioka Observatory, ICRR, University of Tokyo)
    23/08/2012, 13:55
    In this talk, a prospect for software development will be discussed.
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  38. 35. A New Method for Event Reconstruction in Large Water Cherenkov Detectors
    Dr Michael Wilking (TRIUMF)
    23/08/2012, 14:05
    In the Hyper-K detector, all information about a given set of final state particles is encoded in a charge and a time for each photomultiplier tube. This new reconstruction algorithm, based on the method used by MiniBooNE (NIM A608, 206 (2009)), calculates time and charge probability distribution functions for every tube at each stage of a likelihood fit minimization. The particle light...
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  39. 51. Development of GEANT4 based water Cherenkov detector simulation, WCSim
    Prof. Chris Walter (Duke University)
    23/08/2012, 14:25
    WCSim is a Geant4 based water Cherenkov detector simulation originally developed to test the physics potential of a 1 kton water detector located 2 km away from the T2K beam target. Recently, its code has been updated to accommodate the needs of the LBNE water Cherenkov detector option by allowing the simulation of large cylindrical tank configurations with an adjustable number of PMTs....
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  40. 26. SK calibration overview
    Dr Yusuke Koshio (Kamioka observatory, ICRR, Univ. of Tokyo)
    23/08/2012, 15:15
    Super-Kamiokande (SK) is a 50kton water Cherenkov detector. Since starting the experiment, many kinds of calibration has been doing. In this presentation, the calibration in SK will be summarized, and discuss about what is a critical point for water Cherenkov detector calibration. From that point of view, a requirement for HK will also be discussed.
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  41. 8. Considerations for Calibration Source Deployment in Hyper-Kamiokande
    Mr Hirohisa A. Tanaka (University of British Columbia/Institute of Particle Physics)
    23/08/2012, 15:40
    The in situ deployment of radioactive and light sources is among the most important means of calibrating and understanding the response of large water Cherenkov detectors. Such calibration data are the primary means by which the optical properties of the water and the response of the photomultipliers are understood. Given that the Hyper-Kamiokande design calls for ten optically isolated...
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  42. 6. Automated calibration system for the Daya Bay reactor anti-neutrino experiment
    Prof. Jianglai Liu (Shanghai Jiao Tong University)
    23/08/2012, 15:55
    The Daya Bay reactor anti-neutrino experiment has made the most precise measurement of the neutrino mixing angle $\theta_{13}$ to date, using six identical gadolinium-loaded liquid scintillator detector modules. A fully automated calibration system was developed to give a comprehensive and robust calibration of detector response with multiple gamma and neutron sources. In this talk, I will...
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  43. 53. Borexino calibration system
    Dr Szymon Manecki (VirginiaTech)
    23/08/2012, 16:10
    The specific egg-shape geometry of Hyper-Kamiokande poses firstly difficulties for the future calibration campaigns performed in the detector. In contrast to Super-K, the vertical walls would be curved which would limit access to certain regions of the active volume causing unnecessary reduction in the number of calibration locations. As a result, there is a strong urge to develop new,...
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  44. 43. LBNE WCD calibration system design and energy calibration requirements for large water Cherenkov detectors
    Dr Gus Sinnis (Los Alamos National Laboratory), Thomas Kutter (LSU)
    23/08/2012, 16:25
    [SINNIS, Gus (Los Alamos National Laboratory)] The Long Baseline Neutrino Experiment in the US was developing two far detector concepts in parallel. While a liquid Argon time projection chamber was ultimately selected as the far detector technology, we have performed a conceptual design of the calibration requirements and systems needed for a large (200 kTon) water Cherenkov detector. In...
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  45. 63. Calibration
    Dr Hide-Kazu TANAKA (ICRR, University of Tokyo)
    23/08/2012, 16:45
  46. 58. Cavity and Tanks
    Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)
    23/08/2012, 16:45
  47. 61. DAQ system
    Dr Yoshinari Hayato (Kamioka obs., ICRR, Univ. of Tokyo)
    23/08/2012, 16:45
  48. 60. Photo-sensor
    Dr Shoei Nakayama (Kamioka Observatory, ICRR, University of Tokyo), Dr Yasuhiro NISHIMURA (ICRR)
    23/08/2012, 16:45
  49. 62. Software
    Dr Makoto Miura (Kamioka Observatory, ICRR, University of Tokyo)
    23/08/2012, 16:45
  50. 59. Water System
    Dr Hiroyuki Sekiya (ICRR/IPMU), Prof. Mark Vagins (IPMU)
    23/08/2012, 16:45
  51. 56. Discussion for Physics Potentials
    23/08/2012, 17:45
  52. 57. Final Discussion Session
    23/08/2012, 18:45
  53. 0. Registration (1)