Post on 25-Feb-2016
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HEP Research & Network Service in Taiwan
APAN-TW Secretariat Dr. Simon C. LinAPAN-TW NOC Mr. Wenshui Chen
2003-1-20
Outline
• HEP group in Taiwan and collaboration joined
• Highlights• Network Activities• Requirements• APAN-TW Network Service for HEP
projects• Issues
HEP group in Taiwan and collaboration joined
• Academia Sinica: Join Fermilab CDF Collaboration in 1993.
• National Central University: L3 at CERN (1990)
• National Taiwan University: Belle at KEK (1995)
HEP group in Taiwan and collaboration joined (cont.)
• All three groups join the LHC at CERN.– LHC is next generation high energy particle c
ollider.– AS: ATLAS(A Toroidal LHC ApparatuS )– NCU and NTU.: CMS
CDF
• CDF: The Collider Detector at Fermilab• More than 500 physicists work on the collaborati
on• The discovery of the top quark was one of the m
ajor results of the CDF collaboration.
CDF (cont.)
• Installation of Silicon Detector into the CDF Detector
Highlights• CDF:
– Top quake discovery in 1995. Taiwan is one of the 5 countries in CDF.
– Evident of CP violation in B sector (1997) (Sin(2beta) measurement)
• Belle:– CP Violation in B Physics(2002).
• L3:– Higgs Search: Find one Higgs candidate (2000)
Network Activities
• The major network activities for an HEP experiment include– Get data set from KEK: FTP, sftp– Run experiment on remote server: Telnet, ssh– Multipoint Video Conference
• VRVS• H.323/H.320 conferencing facility, MCU (Multipoint
Control Unit)
Requirements
• Sufficient bandwidth for Transferring data set with size of 2 ~ 20 GBytes for multiple researchers at the same.
• Sufficient bandwidth and efficient management to support stable multipoint video conferencing
• Within 2 ~ 3 years, the network should be able to support Tera Byte data file transferring bi-directionally, not including GRID requirement.
Expected Network PerformanceUnacceptalbe
Good
APAN-TW Network Service for HEP projects
• International network Connection• Video Conference Facilities
– H.320: PictureTel– H.323:Polycom VS4000– MCU: Polycom MGC500; capable to support
24 concurrent sessions• QoS
ASIA regional Network Development
• 1999-5 TW-KEK 256kbps IPLC for HEP projects
• 2001-1 TW-KEK IPLC upgrade to 1.54Mbps
• 2002-2 TW-APAN IPLC 155Mbps• 2003-2 TW-StarLight STM4 link
APAN-TW Network Infrastructure 2003
• TW-USA: 622Mbps(2002-11)– TANet: 440Mbps for Internet-1
• Another 3 STM1s under negotiation– TANet2: 180Mbps
• GE to PNW-gigapop for Abilene• T3 to Chicago for STARTAP
• TW-StarLight: STM4(2003-2)• TW-London: STM1 (2003-2)• TW-APAN: STM1(2002-2)• TW-HARNet: STM1(2002-2)
APAN-TW ASIA Research Network Connectivity(Jan,’03)
APAN-TW Network Infrastructure Future Plan
• TW-APAN: STM4• TW-StarLight: STM16 (for GRID applicatio
n)• TW-SouthEastASIA: STM1
Issues
• Packet delivering via the most effective path
• Stable Quality of Videoconference: QoS• Data Transferring Correctness• Future Network Plan must be able to supp
ort GRID