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Members

Members. LSC 20 Members 6 senior 3 post doctors 4 graduate students 4 technical staffs KAGRA: LSC plus 4 Senior members HW Lee (data analysis; parameter estimation) , S Kim , Tai Hyun Yoon (fiber ring cavity, IOO), K yuman Cho ( t ilt sensor)

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Members

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  1. Members • LSC • 20 Members • 6 senior • 3 post doctors • 4 graduate students • 4 technical staffs • KAGRA: LSC plus 4 Senior members • HWLee (data analysis; parameter estimation) , SKim, • Tai Hyun Yoon (fiber ring cavity, IOO), KyumanCho (tiltsensor) • Yong-Ho Cha (KAERI), Jae Wan Kim (Myongji Univ.): inactive

  2. Detector Characterization • Members: J. Oh, SH Oh, KM Kim, E Sohn • Developing the multivariate analysis pipeline, based on various types of Machine Learning Algorithms (MLA) • Auxiliary Channel Glitch Classification Pipeline using ANN • A New Trigger Generation Method using Hilbert-Huang Transform (in progress) • Multichannel Correlation Study using Mutual Information Index (Information theoretic analysis) • Improved scheme of glitch classification using various statistical methods (PCA, k-PCA, Pearson’s correlation etc) • KAGRA Mock data challenge for detector characterization ==> Under discussion for taking and/or selecting data/analysis method/procedure

  3. Instrumentation/Theory • Members: TH Yoon, K Cho, S. Kim • Laser & Fiber ring cavity: Tai Hyun Yoon’s presentation in IOO • Tilt sensor: Kyuman Cho’s talk in Advanced R&D and will be visiting 2 months coming winter to work on this • Characterizing quantum and thermal aspects of the KAGRA detectors by Sangpyo Kim: no progress(?)

  4. Instrumentation/FRC Member: Tai Hyun Yoon and Byunghyuck Moon (D3) • Visiting Professor of ICRR: June – August, 2003, 2004 • B. Moon visited ICRR on July-August, 2013 • FRC will be used for frequency stabilization of NPRO • Talk for FRC by T. H. Yoon in IOO subgroup

  5. Researches on Tilt Sensor Member: Kyuman Cho and June-Gyu Park (Ph.D. Student) Has been performing researches on developing a high resolution tilt sensor for initial mirror alignment. Various interferometer schemes including the heterodyne interferometer utilizing the double pass in AOM and polarizing beam displacer have been studied for the tilt sensor applications. The results will be presented in this meeting at 13:00, Aug. 2.

  6. Researches on Tilt Sensor Member: Kyuman Cho and June-Gyu Park (Ph.D. Student) Awarded as a visiting professor at ICRR K. Cho will visit ICRR from Jan. 6, 2015 to Feb. 25, 2015, for 1 month and 20days with June-Gyu Park. S. Kawamura and K. Cho will have a meeting in Korea to discuss details of implementing the tilt sensor to actual mirror alignment sometime in Fall, 2014. Installation scheme for the tilt sensor will also be researched

  7. Data Analysis: Parameter Estimation • Members: Hyungwon Lee, Chunglee Kim, Jeongcho Kim • Resource: linux cluster @ KISTI GSDC (420 cores, dedicated to KGWG research) • MCMC parameter estimation (PE) with a frequency- domain waveform (TaylorF2) using LALsuite • Comparing PE results with various PN orders • Overlap calculations for various waveforms • Calculation for effect of spin corrections for templates

  8. Data Analysis: Parameter Estimation (cont..) • MCMC PE library for KAGALI • Development based on LAL • Coding with standard C90 • Developing necessary utilities • Close collaboration with Osaka University • Goal: a PE Library that is optimized and user-friendly for KAGRA members

  9. Computational Resources • Resources @KISTI • 420 Cores • 151 TB storage • Currently Tier 3 center of LIGO Data Grid • To be upgraded Tier 2 by 2016. • Accounts at GSDC for KAGRA Members • Hyung Won Lee / Inje University • Tatsuya Narikawa / Osaka University • Hideyuki Tagoshi / Osaka University • Koh Ueno / Osaka University • Kazuhiro Hayama / Osaka University • Common directory for KAGRA members: • /data/kagra/home • KAGRA members can now have access to KGWG Wiki (https://kgwg.nims.re.kr/cbcwiki/FrontPage)

  10. Data Management • LIGO data have been transferred to KISTI storage Data   Type    Level              Location in CIT archive ============================================                 VSR1: hoft        HrecOnline       /archive/frames/VSR1/HrecOnline/...   VSR2: hoft        HrecOnline       /archive/frames/VSR1/HrecOnline/...   VSR3: hoft        HrecOnline       /archive/frames/VSR1/HrecOnline/...   VSR4: hoft        HrecOnline       /archive/frames/VSR1/HrecOnline/... S5:   hoft          strain-L2          /archive/frames/S5/strain-L2/...      S6:   hoft          LDAShoftC02     /archive/frames/S6/LDAShoftC02/...   S5:   RDS         L1                    /archive/frames/S5/L1/… S6:   RDS         L1                    /archive/frames/S6/L1/...                 ================================================= • Current data volume: 113 TB • 10 Gbps network test between CIT and KISTI was successfully done. Can be applied to KAGRA in the future

  11. Research Activities • Parameter Estimation for Advanced Detectors (CKim, HCho,…) • Black Hole Binaries from Star Clusters (HMLee, CKim….) • Application of the effective Fisher Matrix to frequency domain waveform (HCho,CLee) • BNS merger frequency estimates (Chunglee Kim) • Application of ANN to CBC-GRB search (KMKim et al.) • Black Hole capture simulations (GWKang, et al.)

  12. Amaldi Meeting update • Tentative homepage is now available • http://www.amaldi11.org • Science Program should be coordinated with GWPAW which will be held one week before Amaldi at Osaka

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