1. Status of AMS Regional Data Center The Second International Workshop on HEP Data Grid CHEP, KNU 2003. 8. 22-23 G. N. Kim, J. W. Shin, N. Tasneem, M. W. Lee, D. Son (On behalf of the HEP Data Grid Working Group)

2. AMS (Alpha Magnetic Spectrometer) PHYSICS GOALS : A Particle Physics Experiment on the International Space Station for 3 or 4 Years Will Collect ~10 10 Cosmic Rays in Near-Earth Orbit from 300 MeV to 3 TeV To search for Antimatter (He,C) in space with a sensitivity of 10 3 to 10 4 better than current limits. To search for Dark matter High statistics precision measurements of e ,  and p spectrum. To study Astrophysics. High statistics precision measurements of D, 3 He, 4 He, B, C, 9 Be, 10 Be spectrum  B/C: to understand CR propagation in the Galaxy (parameters of galactic wind).  10 Be/ 9 Be: to determine CR confinement time in the Galaxy.

3. AMS-02 (Alpha Magnetic Spectrometer)

4. White Sands, NM Data Flow from ISS to Remote AMS Centers Internet Distribute Locally & Conduct Science JSC 0.9 meter dish Commercial Satellite Service A Dedicated Service/Circuit Or MSFC POIC Telemetry Voice Planning Commanding Five Downlink Video Feeds & Telemetry Backup Remote User Facility Space Station

5. Data Flow from ISS to Remote AMS Centers ACOP AMS High Rate Frame MUX White Sand, NM facility Payload Operations Control Center Science Operations Center Monitoring & science data Stored data Real-time Data H&S Real-time & “Dump” data Real-time, “Dump”, & White Sand’s LOR playback External Communications Payload Data Service system Long Term Short Term GSE Telescience centers ISS NASA Ground Infrastructure Remote AMS Sites H&S Monitoring Science Flight ancillary data Real-time & “dump” NearReal-time File transfer playback MSFC, Al AMS Crew Operation Post

6. Connectivity from ISS to CHEP JSC MSFC POIC/ POCC Telemetry Voice Planning Commanding MIT LANs NINS B4207 vBNSMIT vBNS Chicago NAP CERN (SDC) CHEP ISP-1ISP-2 무궁화위성 ISP-3 RCRS Five Downlink Video Feeds & Telemetry Backup White Sands, NM ISP :Internet Service Provider NAP - Network Access Point vBNS - very high Broadband Network Service NINS - NASA Integrated Network Services POCC - Payload Operations Control Center POIC- Payload Operations Integration Center Commercial Satellite Service International Space Station (ISS)

7. Table. AMS02 data transmitted to SDC from POIC Table. AMS02 Data Volumes Total AMS02 data volume is about 200 TB Stream Band Width Data Category Volume (TB/year) High Rate 3-4 Mbit/s Scientific 11 – 15 Calibration 0.01 Slow Rate 16 kbit/s Housing Keeping 0.06 NASA Auxillary Data 0.01 Origin Data Category Volume (TB) Beam Calibrations Calibration 0.3 Preflight Tests Calibration 0.4 3 years flight Scientific 33 – 45 3 years flight Calibration 0.03 3 years flight House Keeping 0.18 Data Summary Files (DST) Ntuples or ROOT files 165-260 Catalogs Flat files or ROOT files or ORACLE 0.05 Event Tages Flat files or ROOT files or ORACLE 0.2 TDV files Flat files or ROOT files or ORACLE 0.5

8. Tape Library (~200 TB) Disk Storage (20TB) DB Server Gigabit Ethernet Linux Clusters Cluster Servers Hub Internet Server AMS RC CHEP as an AMS Regional Center Analysis Facility Data Storage Display Facility Ewha AMS RS 무궁화위성

9. AMS Analysis Facility at CHEP 1)CHEP AMS Cluster Server: 1 CPU: AMD Athlon MP 2000+ dual Disk Space: 80 GB OS: Redhat 9.0 Linux Clusters : 12 CPU: AMD Athlon MP 2000+ dual Disk Space: 80 GB x 12 =960 GB OS : Redhat 7.3 2) KT AMS Cluster Server: 1 CPU: Intel XEON 2GHz dual Disk Space: 80 GB OS: Redhat 9.0 Linux Clusters : 4 -11 CPU: Intel XEON 2GHz dual Disk Space: 80 GB x 4 =320 GB – 880 GB OS:Redhat 7.3

11. MC Production Center and their Capacity

12. Step:2 Click here! Step:1 Write here registered info. Step:3 Choose any one from datasets. Step:4 Choose appropriate dataset. MC Production Procedure by Remote Client

13. Step:5 Choose appropriate CPU Type & CPU clock. Step:6 Put appropriate CPU time limit. Step:7 Put total number of jobs requested Step:8 Put ‘Total Real Time Required’. Step:9 Choose MC production Mode. Step:10 Click On ‘Submit Request’ MC Production Procedure by Remote Client

14. MC Database Query Form

15. Status of MC Events at CHEP 1.Photon Events with trigger level 1 Energy [GeV] N T [x10 6 ] N S Size[GB] Generated by 1 7 65,076 0.559 CHEP 2 7 78,736 0.612 CHEP 4 7 82,780 0.622 CHEP 8 7 86,553 0.632 CHEP 16 7 98,700 0.640 CHEP 64 7 Proc. - CHEP 128 7 100,201 0.650 CHEP 256 7 Proc. - CHEP 512 7 Proc. - CHEP Total 42 3.666 Data Format: Ntuple

16. 2. Proton Events with trigger level 1 Energy [GeV] N T [x10 6 ] N S Size[GB] Generated by 16 6.7 26,720 1.3 CHEP 128 6.5 25,042 1.2 CERN 256 16.25 52,408 2.8 CERN 512 17.5 55,837 3.5 CERN Total 46.95 8.8 Data Format: Ntuple

17. Data Handling Program: bbFTP bbFTP is a file transfer software developed by Gilles Farrache in Lyon Encoded username and password at connection SSH and Certificate authentification modules Multi-stream transfer Big windows as defined in RFC1323 On-the-fly data compression Automatic retry Customizable time-outs Transfer simulation AFS authentification integration RFIO interface http://ccweb.in2p3.fr/bbftp/

18. Data Transmission Tests Using TEIN (10 Mbit/s ) in Dec. 2002 - for a number of TCP/IP streams - for a file size

19. CHEP as AMS Regional Center -Prepared an Analysis Facility and Data Storage -Producing MC events -Progress in MC production with GRID Tools Summary