[Jlab-seminars] Physics Seminar Announcement - Please Note Time

[Luci Collins]

*Physics Seminar
Wednesday, January 6, 2010
11:00AM
CEBAF Center  F113
Cookies & Coffee at 10:45AM

**Matthew Stettler
Los Alamos National Lab

"Large Signal Processing Systems in High Energy Physics:
The LHC Compact Muon Solenoid Trigger System and Related Efforts" *

The Compact Muon Solenoid is a large particle detector on the Large 
Hadron Collider at CERN (LHC), which has begun operations recently 
following a year long startup delay.  This detector produces data at 
nearly terabit rates, and requires a large signal processing system to 
filter the data stream for significant physics events.  The core of this 
processing system, known as the Global Calorimeter Trigger (GCT), has 
been designed in collaboration with ISR and LANSCE divisions at LANL.  
The design of the GCT will be presented, with short background on the 
algorithms, but primary emphasis will be on the hardware technologies 
involved.  The device is required to have a sustained processing rate of 
340Gbps, and maintain a 10 uS latency for event detection and 
identification.  It is comprised of 54 input serializers, 8 processing 
modules, and 3 large sorting/carrier modules, making it unusually large 
for a signal processor by LANL standards.  Initial integration and 
operation has been quite successful, so the opportunity was taken to 
develop a more advanced architecture that will scale to the performance 
required for Super LHC data rates.  This design, also done in 
collaboration with ISR and LANSCE, has been completed and elements are 
currently under test at CERN. The hardware architecture of this latest 
effort will also be presented.



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