Prof.
Masato Shiozawa
(Kamioka Observatory, ICRR, The University of Tokyo)
27/01/2014, 09:00
Opening Session
Opening remark
Dr
Taku Ishida
(KEK)
27/01/2014, 09:30
Neutrino Beamline
Status of the J-PARC accelerators / neutrino facility and their upgrade plans
Prof.
Tord Ekelof
(Uppsala University)
27/01/2014, 10:00
Neutrino 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...
Prof.
Masashi Yokoyama
(University of Tokyo)
27/01/2014, 10:45
Physics Potential
Introduction to the "Physics Potential and Near Detectors" session
Dr
Christophe Bronner
(Kyoto University), Ms
Linda Cremonesi
(Queen Mary University of London)
27/01/2014, 10:55
Physics Potential
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.
Mr
Shah Raj
(Oxford University)
27/01/2014, 11:25
Physics Potential
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...
Prof.
Mark Hartz
(Kavli IPMU (WPI), University of Tokyo/TRIUMF)
27/01/2014, 13:05
Neutrino Beamline
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...
Prof.
Francesca Di Lodovico
(Queen Mary, University of London)
27/01/2014, 13:25
Near Detectors
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.
Dr
Michael Wilking
(TRIUMF)
27/01/2014, 13:45
Near Detectors
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...
Masashi Yokoyama
(University of Tokyo)
27/01/2014, 14:05
Physics Potential
Goals and schedule for the Letter of Intent to be submitted to J-PARC PAC will be discussed.
Prof.
Michael Shaevitz
(Columbia University)
27/01/2014, 14:20
Physics Potential
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...
Dr
Takatomi Yano
(Okayama Univ.)
27/01/2014, 15:05
Physics Potential
The sensitivity of SRN in HK is reported for several cosmic ray intensity case.
The cosmic muon flux in HK is also reported.
Dr
Hide-Kazu TANAKA
(ICRR)
27/01/2014, 15:30
Cavity 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.
Dr
Shoei Nakayama
(Kamioka Observatory, ICRR, The University of Tokyo)
27/01/2014, 16:00
Cavity 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.
Prof.
Masato Shiozawa
(Kamioka Observatory, ICRR, The University of Tokyo)
27/01/2014, 16:30
Cavity and Tanks
Summary
Dr
Shoei Nakayama
(Kamioka Observatory, ICRR, The University of Tokyo)
28/01/2014, 09:00
Photo-detector and Support
I will present a brief introduction of current activities in the photodetector sub-WG and the plan for the photodetector development.
Dr
Yasuhiro NISHIMURA
(ICRR)
28/01/2014, 09:10
Photo-detector and Support
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.
Robert Svoboda
(UC Davis)
28/01/2014, 09:40
Photo-detector and Support
Current status of development of 11 inch HQE PMTs from ADIT/ETEL. Schedule for delivery of prototypes and planned testing. Possible use in WATCHMAN.
Dr
Jean-Michel Poutissou
(TRIUMF)
28/01/2014, 09:55
Photo-detector and Support
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...
Dr
Yoshinari Hayato
(Kamioka obs., ICRR, Univ. of Tokyo)
28/01/2014, 10:40
DAQ and Electronics
Conveners' summary
Dr
Thomas Lindner
(Triumf)
28/01/2014, 10:55
DAQ and Electronics
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...
Francesca Di Lodovico
(Queen Mary, University of London)
28/01/2014, 11:15
DAQ and Electronics
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.
28/01/2014, 12:00
Dr
Makoto Miura
(Kamioka Observatory, ICRR, University of Tokyo)
28/01/2014, 13:00
Software
A review of the status of software at the previous meeting and what we will discuss in this session will be presented.
Dr
Alex Himmel
(Duke University), Mr
Yuji Okajima
(Tokyo Institute of Technology)
28/01/2014, 13:05
Software
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.
Dr
Blair Jamieson
(University of Winnipeg), Dr
Michael Wilking
(TRIUMF)
28/01/2014, 13:30
Software
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,
Prof.
Francesca Di Lodovico
(Queen Mary, University of London)
28/01/2014, 14:00
Software
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.
Dr
Makoto Miura
(Kamioka Observatory, ICRR, University of Tokyo)
28/01/2014, 14:20
Software
I will summarize the status of software and discuss plan, especially strategy to determine detector configuration of Hyper-K.
Dr
Hiroyuki Sekiya
(ICRR/IPMU)
28/01/2014, 14:55
Water System
HK water system and tank water flow design updates
Prof.
Mark Vagins
(IPMU)
28/01/2014, 15:10
Water System
The current status of gadolinium-in-water R&D studies, particularly the ongoing EGADS project, will be discussed.
Dr
Hide-Kazu TANAKA
(ICRR, University of Tokyo)
28/01/2014, 15:20
Detector Calibration
This talk will overview HK calibration WG status and plan, and give a brief introduction to HK calibration R&D programs.
Dr
Atsumu Suzuki
(Kobe University)
28/01/2014, 15:30
Detector Calibration
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...
Dr
Neil McCauley
(University of Liverpool)
28/01/2014, 15:45
Detector Calibration
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.
Roger Wendell
(ICRR)
28/01/2014, 16:00
Detector Calibration
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.
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...
