Potential sites of Deep Sea Anti-Neutrino Detector

around Taiwan

M.A. Huang1 & H.T. Wang2

1 General Education Center, National United University, Miao-Li, Taiwan, 360

2 Institute of Physics, Academia Sinica, Taipei, Taiwan, 115

M.A. Huang 1

DOANOW workshopMarch 23-25, 2007

KAW4, 5/19/206 M.A. Huang

Nu physics and astrophysics in Taiwan

• Experimental– TEXONO: Academia

Sinica– DYB: NTU, NCTU, NUU– CRTNT: NUU

• Theoretical – NCTU, NCTS– NUU

TEXONO, Academia Sinica

DYB, NTU

NCTU, NCTS

NUU

CRTNT, NUU

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TEXONO Collaboration

Collaboration : Taiwan (AS, INER, KSNPS, NTU) ; China (IHEP, CIAE, THU, NJU) ; Turkey (METU) ; USA (UMD)

Program: Low Energy Neutrino & Astroparticle Physics

Kuo-Sheng (KS) Reactor Neutrino Laboratory

Taiwan EXperiment On NeutrinO

KS NPS-II : 2 cores 2.9 GW

KS Lab: 28 m from core#1

NPS-IV (under construction)

• Neutrino magnetic moments,– PRL, 90, 2003; hep-ex/0605006

• Axion searches – Astro-ph/0609001,

• Nu-e cross sections – Undergoing analysis

• Ultra-Low-Energy HPGe Prototype – ~100 eV, 4x5g detector, working on1 kg detector.

– Nu-N coherent scattering

– Dark matter searches

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TEXONO Physics topics

1/8-10/2007 M.A. Huang

CRTNT• CRTNT : Cosmic Ray Tau Neutrino Telescope

– Detect shower from , which comes from Earth-skimming

Z. Cao et al., J. Phys. G, 31, 571-582, (2005) Highlight paper of the year 2005 by J. Phys. G

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Future plan of CRTNT4 stations, each have telescopes, cover 1664 field of view. Site: Balikun, Hsing-JiangEnergy range: E > 100TeV for neutrino, and E > 0.1EeV for UHECR.

UHECR

Mountain-passing event

C

Earth-skimming event

Daya Bay collaborators in Taiwan

• Nat’l Taiwan Univ. – PI: Yee Bob Hsiung– Acrylic vessel

• Nat’l Chiao Tung Univ.– PI: G.Y. Lin

• Nat’l United Univ.– PI: C.H. Wang– Y. Chang, S. Blyth

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Muon veto simulation, Aberdeen Tunnel prototype

Potential sites near Taiwan

• Selection requirements:– Near nuclear power plant

~ 60 -100 km.

– Depth < -2.6 km (~ 1 km of std. rock)

– Distance to nearest harbor

• Logistic support

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Nuclear Power Stations

3 existing NPS, all have two cores.

NPS-1: 2 1775 MWt

NPS-2: 2 2894 MWt

NPS-3: 2 2785 MWt

NPS-4 in construction.

NPS-4: 2 4100 MWt ; Finish in 2009~ 2101

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Northern Taiwan sites

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NP-1,2 are too far!

only-1600 m

Northern Taiwan

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NP-4 is within 100 km!

Site A:-3500 m

only-1600 m

Southern Taiwan

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Site D:-3000 m

Site C:-2500 m

Site B:-2500 m

Site E:-4000 m

SummarySite A B C D E

Depth < -2.5 < -3 -2.5 ~ -3.5

-2.5 ~ -3.5

< -3

Distance to harbor

30-40 km,Su-Ao

20 km,Orchid Island;70 km TaiDung

20 km,Orchid Island;120 km, TaiDung

110 km, DongKang

160 km, TaiDong or DongKang

Other issues NPS-4 (2010) 2x4.1GWCombined signals of NPS-1,2,4

Strong current

Strong current

River sediments

Close to Philippine

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NPS-3: 2 2785 MWt

Future participation in HANOHANO• If HANOHANO site is near Taiwan, we would be

the host and provide local supports.– Site survey– Application/permission to government– Local control – Data transmission, storage, … etc.

• If not, …– HANOHANO is a good continuation of DYB,

someone may still participate.• Need consensus from colleague in Taiwan

– HEP community, geo-physicists, funding agency, publics.

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