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2nd Open Meeting for the Hyper-Kamiokande Project

14–15 Jan 2013
Asia/Tokyo timezone

Contribution List

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  1. 37. Registration
    14/01/2013, 08:00
  2. 27. Goals of Meeting
    Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)
    14/01/2013, 09:00
    Opening Session
    Opening Session
    I will briefly explain discussion items of the meeting.
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  3. 28. Steering Report
    Prof. Tsuyoshi NAKAYA (Kyoto University)
    14/01/2013, 09:15
    Opening Session
    Opening Session
    Steering Report
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  4. 29. J-PARC and beam-line upgrade
    Dr Taku Ishida (KEK)
    14/01/2013, 09:30
    Neutrino Beamline
    J-PARC and Beamline
    J-PARC and beam-line upgrade
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  5. 14. CP study
    Masashi Yokoyama (University of Tokyo)
    14/01/2013, 09:50
    An update of CP sensitivity study will be given.
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  6. 12. Considerations for a Near Detector for the Tokai-to-HK experiment
    Mr Hirohisa A. Tanaka (University of British Columbia/Institute of Particle Physics)
    14/01/2013, 10:35
    I will discuss considerations for the design and desired capabilities for a near detector for the long-baseline component of the Hyper-Kamiokande physics program (Tokai-to-HK). My comments will focus mainly on potential incremental upgrades to the existing ND280 off-axis detector for T2K, but will include thoughts on more substantial upgrades.
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  7. 10. Off-Axis Detectors as Direct Measurements of Neutrino Energy Reconstruction
    Prof. Kevin McFarland (University of Rochester), Dr Mark Hartz (University of Toronto and York University)
    14/01/2013, 10:55
    Uncertainties in neutrino energy reconstruction in quasi-elastic scattering due to nuclear effects may be a significant systematic uncertainty for oscillations measurements at Hyper-K. We investigate the possibility of directly measuring these misreconstructions in a model-independent way with a series of off-axis near detectors.
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  8. 30. Atmospheric Neutrino Sensitivity Studies
    Roger Wendell (ICRR)
    14/01/2013, 11:15
    This talk will present an update of the expected sensitivity to neutrino oscillations at Hyper-K after corrections to the analysis method and updates of the global value of theta_13.
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  9. 21. Muon charge identification with gadolinium-loaded water
    Dr Christopher Mauger (LANL)
    14/01/2013, 11:30
    A novel approach to muon charge-identification is described. The approach uses the neutron-capture signal available in the presence of gadolinium. Applications to atmospheric neutrino studies are discussed.
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  10. 23. Improvement of event selection of proton decay searches
    Shunichi Mine (UCI)
    14/01/2013, 13:25
    This talk will present studies toward the improvement of proton decay event selection at HK using shape information from the signal and background distributions instead of pure counting methods used in proton decay searches at SK thus far. Emphasis will be on the p->e+pi0 mode.
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  11. 17. Improvement of proton decay analysis in p-->nu-bar+K^+
    Dr Makoto Miura (Kamioka Observatory, ICRR, University of Tokyo)
    14/01/2013, 13:40
    Physics Potential
    Physics Potential
    The proton decay mode, p--> nu-bar+K^+ is favored by SUSY-GUTs and it is an important analysis for Hyper-K. Recently, there have been several improvement in the alaysis. I will discuss how much sensitivity of Hyper-K will be improved by these improvements.
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  12. 26. Spallation background
    Prof. Yasuo Takeuchi (Dept. of Physics, Grad. School of Science, Kobe Univ.)
    14/01/2013, 13:55
    An estimation of spallation background in HK will be reported.
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  13. 31. Solar neutrinos and supernova burst neutrinos at Hyper-Kamiokande
    Dr Yusuke Koshio (Kamioka observatory, ICRR, Univ. of Tokyo)
    14/01/2013, 14:15
    The sensitivity of solar neutrinos is discussed in this presentation. The modification from the previous meeting will be updated back ground rate from spallation, therefore, the results will be more realistic. Another topics is supernova burst neutrinos. This will be more precise than the discussion in the previous meeting, especially, a correlation with another observation such as gravitational wave.
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  14. 9. SRN search with HK
    Dr Takatomi Yano (Okayama Univ.)
    14/01/2013, 14:35
    In this presentation, SRN sensitivity at HK, with and without Gd option, will be discussed.
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  15. 22. Neutrinographic imaging of the earth
    Akimichi Taketa (Earthquake Research Institute)
    14/01/2013, 15:20
    Absorption neutrinography utilizes very high energy neutrinos with energies above 10 TeV to measure the nucleon density inside the earth whereas oscillation neutrinography measures the electron density by observing the MSW effect. Two independent physical quantities might provide new geophysical information, e.g., isotope ratio, to us. In this talk, a recent attempt to use atmospheric...
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  16. 2. Excavation of the Hyper-K cavern
    Prof. Masato SHIOZAWA (The University of Tokyo, Institute for Cosmic Ray Research, ICRR)
    14/01/2013, 15:50
    Cavity and Tanks
    Cavity and Tank
    I will show updates on studies related to the cavern stability, excavation method, waste rock disposal.
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  17. 4. Hyper-K liner and PMT support design
    Dr Hide-Kazu TANAKA (ICRR, University of Tokyo)
    14/01/2013, 16:20
    Cavity and Tanks
    Cavity and Tank
    Updates of Hyper-K liner and PMT support design will be discussed.
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  18. 3. Geomagnetic field compensation
    Dr Shoei Nakayama (Kamioka Observatory, ICRR, University of Tokyo)
    14/01/2013, 16:50
    Cavity and Tanks
    Cavity and Tank
    I will present some results from studies on geomagnetic field compensation in the Hyper-K tank, especially an optimization of the compensation coil system.
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  19. 6. Water for Hyper-K
    Dr Hiroyuki Sekiya (ICRR/IPMU)
    14/01/2013, 17:35
    Water System
    Water System
    Plans of water source, pure water system, and water flow in the tank.
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  20. 11. Gadolinium for Hyper-K
    Prof. Mark Vagins (IPMU)
    14/01/2013, 18:00
    Water System
    Water System
    Progress on the the design and pricing of the water system for the gadolinium option for Hyper-Kamiokande will be presented, as well as the current status of the EGADS gadolinium test project.
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  21. 7. Preliminary results on water-based liquid scintillator in a proton beam
    David Jaffe (BNL)
    14/01/2013, 18:20
    Water System
    Water System
    Samples of water-based liquid scintillator, liquid scintillator and water were exposed to proton beams of kinetic energy 210, 475 and 2000 MeV. Preliminary results on light yield will be presented. Implications for the scientific agenda of future large water Cherenkov detectors will be discussed.
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  22. 44. Overview of the photodetector development
    Dr Shoei Nakayama (Kamioka Observatory, ICRR, University of Tokyo)
    15/01/2013, 10:00
    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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  23. 33. HPD development
    Dr Yasuhiro NISHIMURA (ICRR)
    15/01/2013, 10:15
    Photo-Detector and Support
    Photodetectors
    Hybrid Photodetector (HPD) is being developed for Hyper-K and a proof test is planned using a 200-ton tank at Kamioka site. The development of an 8-inch HPD and a plan for the first proof test will be shown.
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  24. 36. A new design of large area MCP-PMT for the next generation neutrino experiments
    Prof. Yuekun Heng (Experimental Physics Center, Institute of High Energy Physics)
    15/01/2013, 10:35
    Photo-Detector and Support
    Photodetectors
    The next generation neutrino experiments call for significantly increasing the total detector volume. Inexpensive PMTs with large size and high efficiency photocathode are needed in order for these experiments to become reality. We have developed a conceptual design of large focusing type PMT aiming for improving the PMT photon detection efficiency. The transmission photocathode coated on the...
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  25. 13. Update on Photomultiplier Evaluation and Development in the U.S.
    Robert Svoboda (UC Davis)
    15/01/2013, 10:55
    Photo-Detector and Support
    Photodetectors
    A summary of the evaluation of the Hamamatsu 12-inch PMT will be given, along with a status update on the development of an 11-inch ADIT PMT.
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  26. 24. Photo-detector development for maximizing the overall photon detection efficiency
    Dr Fabrice Retiere (TRIUMF)
    15/01/2013, 11:05
    Photo-Detector and Support
    Photodetectors
    Photo-detector development for maximizing the overall photon detection efficiency 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...
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  27. 48. Baseline design of the DAQ and Electronics System
    Dr Yoshinari Hayato (ICRR, Kamioka)
    15/01/2013, 11:20
    DAQ and Electronics
    DAQ and Electronics System
    Present expected trigger rate from dark hits, low energy backgrounds and muons, data rate from those events assuming various photo-sensors' dark rates, low energy background rates and muon rates. Also, discuss the applicability of the simple majority trigger scheme for single/3/5 compartments in one detector. Referring to these estimation, baseline design will be presented assuming realistic...
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  28. 16. Overview of software development towards Hyper-K
    Dr Makoto Miura (Kamioka Observatory, ICRR, University of Tokyo)
    15/01/2013, 13:05
    Software
    Softwares
    Recently, we had several progresses in software development for Hyper-Kamiokande. In this talk, I will give a introduction about our activity.
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  29. 18. WCSim strategy and status
    Prof. Chris Walter (Duke University)
    15/01/2013, 13:15
    Software
    Softwares
    In this talk I will give an overview of the current use of WCSim for Hyper-K. I will explain our tuning and validation strategy, show current validation work by group members, and introduce the other talks in the session on geometry and calibration.
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  30. 45. Hyper-K Geometry for WCSim
    Dr Peter Gumplinger (TRIUMF)
    15/01/2013, 13:30
    Software
    Softwares
    This talk will describe the development of a parameterized geometry model of the Hyper-K detector for use in the WCSim simulation package. Both details of the geometry itself and the status of the implementation will be described.
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  31. 46. WCsim tuning
    Dr Alex Himmel (Duke University)
    15/01/2013, 13:40
    Software
    Softwares
    This talk will describe how we used comparisons between SKDetSim, the SuperK detector simulation, and a WCSim simulation of the SuperK geometry to tune the optical properties of the simulation, like reflectivity, scattering, and absorption. The goal was to tune the physical properties of the detector materials in order to improve the simulation accuracy in any geometry.
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  32. 47. High Energy reconstruction performance
    Dr Tarek Akiri (Duke University)
    15/01/2013, 13:55
    Software
    Softwares
    This talk will show a comparison between the reconstruction performances of WCSim in its Super-K configuration and those of the actual Super-K simulation called SKDetSim. This comparison was done after the tuning of WCSim to SKDetSim. This talk will show many critical distributions as vertex, direction and momentum resolutions as well as the performances for a T2K-like set of cuts for the nue...
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  33. 20. Recent Updates on fiTQun, a New Event Reconstruction Algorithm for Water Cherenkov Detectors
    Mr Shimpei Tobayama (University of British Columbia)
    15/01/2013, 14:10
    Software
    Softwares
    fiTQun is a new event reconstruction algorithm which has been developed for the Super-K detector. Using the charge and time information from the photomultiplier tubes in the detector, a likelihood function is constructed, which is then maximized to extract particle track parameters. The new algorithm has the potential to substantially improve particle identification performance as well as...
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  34. 5. Computing Strategy for Hyper-Kamiokande
    Prof. Francesca Di Lodovico (Queen Mary, University of London)
    15/01/2013, 14:35
    Software
    Softwares
    A computing strategy that is capable of taking advantage of new technologies (such as Cloud technologies) with minimal impact is needed. The strategy needs to provide a scalable architecture that minimizes the operational overhead. Moreover, long-term data access and preservation are becoming a growing concern worldwide. It has become a requirement in the EU and the US. Incorporating...
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  35. 19. The Super-KAVE
    Prof. Kate Scholberg Scholberg (Duke University)
    15/01/2013, 15:15
    Software
    Softwares
    This talk will describe the Super-KAVE, a 3D immersive and interactive event display developed using Duke University's DiVE (Duke immersive Virtual Environment) facility. This event display could easily be adapted to Hyper-K or other experiments, and could be ported to similar facilities elsewhere.
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  36. 35. HK calibration overview & PMT/electronics calibration
    Dr Hide-Kazu TANAKA (ICRR, University of Tokyo)
    15/01/2013, 15:25
    Detector Calibration
    Calibrations
    I will discuss PMT/electronics calibration and monitoring.
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  37. 15. Considerations for the calibration of water properties and reflection at HK
    Mr Hirohisa A. Tanaka (University of British Columbia/Institute of Particle Physics)
    15/01/2013, 15:45
    Detector Calibration
    Calibrations
    I will discuss considerations for the measurement of the optical properties of the water and reflection off the photosensors at Hyper-Kamiokande, including the necessary calibration devices and analysis methods . The talk will include a review of relevant techniques employed at Super-Kamiokande, SNO and MiniBooNE.
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  38. 32. Low energy calibration
    Dr Yusuke Koshio (Kamioka observatory, ICRR, Univ. of Tokyo)
    15/01/2013, 16:00
    Detector Calibration
    Calibrations
    The higher level calibration for low energy physics in Hyper-K is discussed. In Super-K, the precise calibration using LINAC, DT and nickel was crucial for make a results. Because of several limitation in Hyper-K, it may not be easy to do the same calibration as Super-K. In this presentation, what is needed for a low energy physics will be discussed.
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  39. 42. High energy calibration
    Dr Shunichi Mine (UCI)
    15/01/2013, 16:15
    Detector Calibration
    Calibrations
    The SK detector calibrations only related to the higher energy physics data analyses (atmospheric neutrino, proton decay, T2K-SK, etc.) will be summarized for the HK detector calibration.
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  40. 43. Outer detector calibration
    Dr Shunichi Mine (UCI)
    15/01/2013, 16:30
    Detector Calibration
    Calibrations
    The SK OD calibrations will be reviewed for the HK OD calibration.
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  41. 25. Calibration source deployment system
    Mr Szymon Manecki (VirginiaTech)
    15/01/2013, 16:40
    Detector Calibration
    Calibrations
    In this talk I will present a review of the calibration systems that were implemented in the detectors of SNO and Borexino experiments. I will cover the most important points of each of the systems that will be critical for the design of the Hyper-K source deployment apparatus and its new requirements. Some of the major points in the discussion will be dedicated to the Borexino style source...
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  42. 38. Discussions
    15/01/2013, 17:25
  43. 34. Performance evaluation of 8-inch HPD
    Ms Seiko Hirota (Kyoto Univ.)
    Photo-Detector and Support
    An 8-inch Hybrid Photodetector (HPD) for the first proof-test is developed. Measured performance will be presented.
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  44. 39. Sensitivity study (TBD)
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