Hyper-KamiokandeHyper-Kamiokande

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Hyper-Kamiokande in 2001● In 2001, Letter of Intent for T2K.

● Hyper-Kamiokande introduced as the second phase of T2K.

● Second phase can happen if T2K has observed muon-into-electron neutrino oscillations.

● Oscillation is a necessary step forward to measure leptonic CP violation:➢ a main open question in particle

physics;➢ needed to understand matter-

antimatter asymmetry in the Universe.

arXiv:hep-ex/0106019

http://arxiv.org/abs/hep-ex/0106019

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Indication of e appearance at T2K

6 e events

In 2011 the first indication of oscillation of muon-into-electron neutrinos at T2K.

Published in Phys.Rev.Lett. 107 (2011) 041801. Almost 1000 citations!

T2K continued to accumulate statistics.

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● In 2013, clear observation of muon-into-electron neutrinos oscillation.

● Condition needed to search for CP violation satisfied!

Observation of e appearance at T2K

6 e events6

e events 28

e events

Phys.Rev.Lett. 107 (2011) 041801 Phys. Rev. Lett. 112, 061802 (2014)

2 years later and more statistics

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Letter of Intent to J-PARC

Letter of Intent in 2011 (arXiv:1109.3262 [hep-ex])

Letter of Intent to J-PARC (April 2014): signatures from 3 Continents, 67 Institutes, 240 people.

Using the J-PARC beam,Hyper-K has the potential to become the most sensitive experiment to probe CP violation.

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Open Meetings● International Open Meetings since 2012. ● Two per year, everyone is welcome.● Discussions on all the aspects of the experiment

ranging from the J-PARC beam to the detector.

● Vancouver, Canada, July 2014:

● Most recent at IPMU, Jan 28-31 2015, and establishment of proto-collaboration.

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EU Open Meetings● EU Open Meetings from 2013.● London, Dec 2013:

● Focus on EU contributions.

● June 2014, meeting at CERN, follow-up in Sept. 2014.

● Collaboration with CERN through the CERN neutrino platform.

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Worldwide Expertise

The expected physics from Hyper-K is so remarkable that it is attracting Collaborators from many Countries:

- who have made significant contributions to past and present experiments

- including K2K, T2K and Super-K, but also other experiments worldwide, e.g. in the US and Europe.

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Moving Foward● Keep momentum going for a timely start of the

experiment.● Aim to start construction around 2018.

June 2014

Approved R&D Funds

Prototype

MEXT R&D funds approved in Japan as Grant-in-Aid: ~ USD 1.7M/5 years (2013-17)

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International Proto-Collaboration

12 countries, 67 institutes, 240 people

240 people and growing!R&D funding already secured in some Countries.More are in the process of securing funds.Also EU Community awarded funds to EU Countries.

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Hyper-K Governance Structure● The new formed proto-collaboration has an

international governance structure.● It is a self-organized entity bringing expertise from

around the world.● It is responsible for the scientific strategy and

technical requirements.● It collaborates with the host labs, responsible for the

facilities, to work together toward the creation of the Hyper-Kamiokande experiment.

● There are three bodies:International Board Representative (IBR)Conveners Board (CB)(International) Steering Committee (iSC)

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International Board Representative

Charge● Make the rules for the collaboration.● Promote the funding requests in each Country.● Monitor the financial aspects of the experiment.● Confirm proposals from iSC about project steering

(such as nomination of conveners).

Membership● One or two members from each Country. The chair

will be selected from amongst the IBR members.● Ex-officio: iSC members.

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Memberships of the IBRChair: D. Wark

Brazil: H. Nunokawa (Rio de Janeiro)Canada: S. Bhadra (York), A. Konaka (TRIUMF)

France: M. Gonin (Ecole Polytechnique)Italy: M.G. Catanesi (INFN-Bari)

Japan: T. Kobayashi (KEK), T. Nakaya (Kyoto), M. Shiozawa (ICRR)Korea: K.K. Joo (CNU)

Poland: E. Rondio (NCBJ, Warsaw)Russia: Y. Kudenko (INR)Spain: L. Labarga (Madrid)

Switzerland: A. Blondel (Geneva)UK: F. Di Lodovico (QM London), D. Wark (STFC, RAL-PPD)

USA: E. Kearns (Boston), C. Walter (Duke)

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Conveners Board

Charge● Provide coordination of all the hardware, software

and physics activities towards the full design of the experiment.

● Technical decisions of each R&D subjects confirmed by iSC.

Membership● Project leader. ● Co-Project leader(s).● Working group conveners.

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WG1Shiozawa

SmyH.Tanaka

WG2SekiyaVagins

WG3NakayamaNishimura

WG4HayatoLindner

WG5MiuraWalter

Di Lodovico

WG6Koshio

McCauleyMine

Hide TanakaHiro Tanaka

WG7Hartz

Wilson

Project Leader:Masato Shiozawa

Project co-Leader:Francesca Di Lodovico

Phys-WG1Yokoyama

Phys-WGYokoyama

Phys-WG2Wendell

Phys-WG3ShimizuTakeuchi

International Working Groups

WG8HartzFuji

WG1: Cavity and TankWG2: WaterWG3: Photo-sensorsWG4: Electronics and DAQWG5: SoftwareWG6: CalibrationWG7: Near DetectorsWG8: Beam & Accelerator

Phys-WG1: AcceleratorPhys-WG2: Atmospheric ν+Nucleon decaysPhys-WG3: Astroparticle Physics (SN,Solar ν, etc)

Very active and growing group! Recently added new conveners.

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(International) Steering Committee

Charge● Making or approving major scientific or technical

decisions. It possesses sufficient expertise to guide the collaboration.

● Appoints members in conveners board including project leaders in consultation with IBR.

● Promotes the Hyper-K project in Japan and in the world.● Select the Hyper-K speakers for international

conferences.● Check Hyper-K material (proceedings, etc.).

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(International) Steering CommitteeMembership

• Chair: T. Nakaya• IBR chair (co-chair of the iSC): D. Wark (UK)• ICRR representative: N. Nakahata (Japan)• KEK representative: T. Kobayashi (Japan)• Project leader and co-leader: M. Shiozawa (Japan), F. Di Lodovico (UK)• Physics convener: M. Yokoyama (Japan)• At-large members:

● H. Aihara (Japan), A. Blondel (Switzerland), G. Catanesi (Italy), E. Kearns (USA), J.M.Poutissou (Canada)

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Next step: a Design Report

● Making a optimum conceptual design for the experiment is crucial.

● It's the needed step toward a concrete design of the experiment.

● Plan to submit a Design Report to KEK/J-PARC in October 2015.

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Worldwide R&DA snapshop of the R&D that is going on around the world.

CERNNeutrino platform

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Summary● Hyper-K is very well placed to be the greatest experiment of its generation.

● It's based on exceptional experiments: Super-Kamiokande, K2K and T2K.

● It attracted many collaborators worldwide.● Proto-collaboration formed today.● It is our strong goal to start construction as soon as possible and we look forward to working with our Japanese colleagues and Institutions to make Hyper-Kamiokande a reality.

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