1. Yangyang Underground Laboratory Sun Kee Kim Seoul National University

2. 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

3. 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

4. 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 CaMoO 4 crystal detector Other crystals(PbMoO 4,CdWO 4,...) PLB 633, 201, 2006

5. 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)

6. 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

7. Y2L current

8. Underground Lab. Space Current Lab. ~ 100m 2 New Lab. space 40 m x 20 m = 800 m 2

9. Planned underground Lab. Current Lab. space

10. Ground Lab. 2 story building - 900m 2 Detector construction/test Chemical lab./clean room Machine shop/Electronics shop Offices, Meeting rooms Dorm., Kitchen, Lounge Etc. Underground Lab. Lab. 10x10=100m 2 x 3 Lab. 10x5 = 50m 2 x 2 Mini Machine shop Liquid N2/He facility Parking space Service/utility space Yangyang Underground Laboratory Y2L

11. A result of the last workshop  Reuslts of this workshop  Something Great!