Analysis Plan in Korea (Activities in Korea)

Transcription

1 Analysis Plan in Korea (Activities in Korea) Ju Hwan Kang (Yonsei) ALICE Analysis Workshop for Asian Communities January 21-23, 2010 Hiroshima University, Japan

2 ALICE Members in Korea Yonsei Univ Ju Hwan Kang, Youngil Kwon TRD, R&D for a forward EM calorimeter ( production) Pusan Nat Univ In-Kwon Yoo HMPID, R&D for VHMPID (PID jets) Sejong Univ Seyong Kim, Dae Sung Hwang Hadron structure, Hydrodynamic property of QGP (theory) Kangneung Nat Univ / Konkuk Univ Do-won Kim, Sung-Chul Lee, Sunkun Oh TOF, Muon Trigger System (Upsilon)

3 Main Activities by Yonsei Focus on physics related to production. < Related Activities > TRD & Data collection ( * e + e - ) R&D for a forward EM calorimeter (high Pt )

4 (Plastic fiber + Air) Transition radiation (TR) is produced if a highly relativistic (γ>900) particle traverses many boundaries between materials with different dielectric properties. Electrons can be identified using total deposited charge, and signal intensity as function of drift time.

5 Electrons from real TRD data Electrons are the conversions electrons (Minv<20 MeV/c^2) for pt>1 GeV/c, pions are selected with a cut in the de/dx signal of the TPC

6 Student at CERN, participating in TRD integration and taking shift

7 Current status First data will come soon. We will continue slow but steady efforts until we collect enough statistics for measurement. Feasibility as an year 1 measurement is in debate.

8 R&D for a forward EM calorimeter EM Shower in W-Si Sandwich calorimeter 15mm, R M 20cm, 20X 0, 1λ

9 Exercise for Si-sensor production

10 Exercise for Si-sensor packaging Gluing process -4 steps - 3 different glues -1 day for each step spacer, interconnect, sensor, copper, epoxy

11 Cosmic test (sensor & electronics) Micromodule(Sensor) Preamp card 8Ch. fadc(100mhz) Bridge board

12 Beam test 22% resolution E 7 vertical channels grouped (cost issue) 8 pad sensors in one carrier board Preamp hybrid 12

13 From : "Edouard Kistenev"<kistenev@bnl.gov> To : "PHENIX nose cone calorimeter (internal discussion list)"<phenix-ncc-l@lists.bnl.gov> Date : 2010/01/14 목요일오전 4:46:28 Subject : Re: [Phenix-ncc-l] Focal meeting : testbeam analysis Hi, SangHoon, I need fewof your pictures for tomorrow. Any chance to get.ppt file instead of.pdf one. Edward Sanghoon Lim wrote: > Hi, > This is SangHoon. Here I post my beam test analysis. As of now, we have > 22%/sqrt(E) + 3.8% or 22%/sqrt(E) + 2.6% depending on how we define > resolution. The later is for well defined EM shower. I'll present details > in the meeting. could anyone post the presentation to meeting? > > Yours, > SangHoon

14 Pusan Nat l Univ. Heavy Ion Physics Exp. Lab PNU for ALICE : HMPID Operation VHMPID Upgrade HMPID Data Analysis (PID Jets) RICH, DCS, RICH-DAQ, Simulation for R&D In-Kwon Yoo 14

15 Why HMPID? PID in ALICE In-Kwon Yoo 15

16 HMPID RICH Concept of Design Ring Imaging Cherenkov (RICH) Detector : Momentum limit = choice of radiator medium Track-by-track PID π, K, p with 1-5 GeV/c : liquid radiator Cherenkov photon (λ 200 nm) transmittance 15mm C 6 F 14 Particle density, space, photon absorption etc proximity focusing Photoelectron detector : MWPC with CH 4 at atmospheric pressure (4 mm gap) HV = 2050 V In-Kwon Yoo 16

17 HMPID RICH HMPID Layout Six photo-cathodes per module CsI photo-cathode is segmented in 0.8x0.84 cm pads Total number of pads per chamber = In-Kwon Yoo photons MIP 17

18 Test HMPID Cosmic Test Results (G. Volpe, QM09) In-Kwon Yoo 18

19 VHMPID Project Motivation and current design ALICE detectors were designed in the mid-1990 s RHIC results the need for VHMPID 10 GeV/c < pt < 25 GeV/c the gaseous radiator : C 4 F cm long Near-side jet-cone analysis && Away-side jet-cone analysis Photon Detector : HMPIDlike MWPC+CsI pad cathode In-Kwon Yoo 19

20 RICH R&D at PNU RICH Test bench at Pohang 1~3 mm gap 150mm&50mm&150mm lead block walls BeamWindow MWPC RICH beam hole cof Mirror cof PMTs with laser Trigger detector 32ch, 64*56 mm 2 effective area 16*7 mm 2 /each pad Ar+CO2 = 85:15 HV : (+)1800V flow : 3L /min In-Kwon Yoo 20

21 ALICE Group at Sejong U. Sejong U. members Two Professors (Seyong Kim, Dae Sung Hwang) Three Students (Jong Hyun Kim, Hyung Suk Son, Byung Hee Han) Sejong U. physics Interests Theoretical aspects of strong interaction (QGP and hadron structure) Grid Computing 21

22 Grid Computing Sejong is an unofficial site of ALICE Computing Grid 22

23 GLORIAD-KR 10G Networks (Hong Kong-Daejeon-Seattle) US Amsterdam Moscow CNIC, China Hong Kong HKLight Hong Kong, CN Russia (Novosibirsk) Beijing OC192 Korea 10G (KR-HK) OC192 KR GLIF Exchange Point KREONET 2*10GE 10G (KR-US) KISTI, Korea (Daejeon) Korea OC192 Seattle, US OC192 CANARIE, Canada Seattle KR/ CANARIE nodes (L1, L2) 10GE Calgary StarLight OC192 PacificWave Toronto NYC Chicago GLIF node (CANARIE, PW) EU 2.5G 10G CSTNET * TGN (Tyco Global Network ) : Korea to US * FNAL (FLAG North Asia Loop) : Korea to HK 23

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25 Physics Topic - I Primary Goal: theoretical research on hadron structure in p-p and Pb-Pb collisions Single Spin Asymmetries in hadron production (Λ polarization wrt jet axis to study spin and transverse momentum dependent fragmentation function): Phys. Lett. B659 (2008) 127 (arxiv: ) 25

26 Physics Topic II Primary Goal : theoretical research QCD phase diagram with quark density PoS(Lattice2007) 178 (arxiv: ) Hydrodynamic properties (conductivity, viscosity) of Quark-Gluon Plasma: PRL 99, (2007) (hep-lat/ ) 26

27 QCD phase diagram Theoretical calculation for the various QCD phases marked with green color to study QCD characteristics depending on temperature and baryon density 27

28 Kangnung/Konkuk ALICE group Activities

29 Team member list Full Name Status Baek, Yong Wook Oh, Sunkun Kim, Jin Sook Kim, Do-won Physicist Lee, Sung-Chul Ahn, Sang Un Jung, Hyung Taik Jung, Won Woong Lee, Ki Sang Seo, Jeewon Graduate student

30 Contribution to ALICE Job description Full Name Status TOF detector maintenance and operation Kim, Jin Sook Physicist Research and development for TOF detector Particle Identification study Muon Trigger System maintenance and operation Development online monitoring tools for ALICE Muon Trigger System and efficiency correction frame work for Upsilon Kim, Do-won Kim, Jin Sook Lee, Ki Sang Seo, Jeewon Lee, Sung-Chul Jung, Hyung Taik Jung, Won Woong Baek, Yong Wook Ahn, Sang Un Baek, Yong Wook Oh, Sunkun Ahn, Sang Un Physicist Graduate student Physicist Graduate student Physicist Graduate student Physicist Graduate student