Yangyang Underground Laboratory

Sun Kee KimSeoul National University

Questions on Universe

What is the Universe made of? How large is the Universe? How did the Universe start? What is the destiny of the Universe? What is the meaning of life in the Universe? …

“The most incomprehensible thing about the world is that it is comprehensible”- A. Einstein -

Some of these questions can be answered by understanding the nature of Dark matter and Neutrinos

Issues

Dark Matter What is it ? WIMP?, Axion,… What is its nature? Mass, SUSY,…

Neutrinos What is mass? Majorana or Dirac? Magentic moment? Mixing angle?

“The most incomprehensible thing about the world is that it is comprehensible”- A. Einstein -

Underground experiments on-Direct dark matter search-Neutrinoless double beta decay search-Neutrino magnetic moment with strong source

On going at KIMS

Dark Matter CsI(Tl) crystal detector ULE HPGe detector for low mass Cryogenic detector development

Neutrinoless double beta decay Metal(Sn,Zn,…) loaded liquid scintillator CaMoO4 crystal detector Other crystals(PbMoO4,CdWO4,...)

PLB 633, 201, 2006

DMRC

Dark Matter Research Center at SNU was established in 2000.

- funded by Creative Research Initiative program of MOST(funded up to 2009)

KIMS group for CsI(Tl) WIMP search - SNU, Kyungpook National Univ., Sejong Univ. Younsei University, Ewha Woman’s Univ., KRISS

International Collaboration - China: Tsinghua Univ., IHEP - Taiwan: Academia Sinica (ULE HPGe) - Japan: KEK, Saga Univ. - Russia: ITEP (DBD) - Ukrine: INR (DBD)

History

2000.12.16 Mini-workshop on WIMP search with crystals, Seoul (Henry Wong, Jin Li) 2001.3.21 Beijing Mini-workshop, Beijing 2001.9.13 Cold Dark Matter Mini-workshop, Taipei 2003.9.23 TEXONO-KIMS joint meeting, Beijing 2003.9.28 Vasily Kornoukhov visited KIMS 2004.1.29 TEXONO-KIMS Joint workshop, Yongpyung 2004.4.21 KIMS visited Moscow 2004.7.5 ITEP group visited KIMS 2004.10.27 Chinese Funding agency visited KIMS 2005.10.9 Fedor Danevich visited KIMS 2005.12.18 Takayuki Matsui visited KIMS 2006.2.6 Workshop on the underground experiments at Yangyang

Good news in 2005 Tsinghua Univ. group got funding support ITEP group got ISTC project funded

Y2L current

Underground Lab. Space

Current Lab. ~ 100m2

New Lab. space40 m x 20 m = 800 m2

909090909090

실험실 공간

320 sq m8m

40m

실험실공간

800 sq m

20m

40m

Planned underground Lab.

지하공간

800 sq m

실험실 1

100 sq m

실험실 1

100 sq m

실험실 1

100 sq m

실험실 1

50 sq m

실험실 1

50 sq m

지원시설

50 sq m

40.00

20.0

0

사무실

49 sq m실험실 1

100 sq m

Current Lab. space

Ground Lab.

•2 story building - 900m2

•Detector construction/test•Chemical lab./clean room•Machine shop/Electronics shop•Offices, Meeting rooms•Dorm., Kitchen, Lounge •Etc.

Underground Lab.

•Lab. 10x10=100m2 x 3•Lab. 10x5 = 50m2 x 2•Mini Machine shop•Liquid N2/He facility•Parking space•Service/utility space

Yangyang Underground Laboratory

Y2L

A result of the last workshop

Reuslts of this workshop Something Great!