Power and Thermal Analysis of Custom Chips for Real Time Data Processing in High Energy Physics (HEP) Experiments

Project: Research project

Description

My proposed activity as a visiting scholar involves analysis and evaluation of custom
integrated circuits designed at Fermilab as part of High Energy Physics (HEP) experimental
instrumentation. Specifically, I will focus on the power dissipation and thermal behavior of
chips that are currently being developed for the next generation data processing units that
will be deployed for collider experiments. These experiments generate data on particle
trajectories, which need to be recognized subject to their similarity to a known pattern and
then fully reconstructed. Among a massive amount of events identified by the detectors
within the collider, a subset of tracks that correspond to true events of interest need to be
identified in real-time for retention while other background events need to be filtered out
efficiently. These experimental systems produce terabytes of data per second and this
deluge of data needs to be processed in real time with nanosecond latency per track. This
requires a massively parallel computation platform. Researchers at Fermilab have already
demonstrated that such a computation platform cannot be constructed with off-the-shelf
software programmable processor-based components. In order to meet this agrresive
performance target, an effort is underway at the Fermilab to create the next generation
custom computing platform to perform hardware based pattern recognition for fast triggering
of particle tracks. This effort involves two stages of design and implementation of a pattern
recognition architecture as an integrated circuit (IC). When dealing with the design and
development of next generation high performance ICs, one of the foremost factors deciding
the upper limit of achievable performance is the Thermal Design Point (TDP) metric of the
chip. TDP represents the maximum amount of power that can be sustained by the system
during reasonably long execution intervals representative of typical workloads, while only
short-lived (in the order of microsecond) crossing over this threshold may be allowed. A
careful analysis of an IC for its power dissipation and resulting heat generation under
expected workloads is therefore a must in design and production of all high performance,
densely packaged chips. The custom chip designed at Fermilab to be deployed for the track
triggering is no exception to this. My proposed activity will be specifically addressing this
important need to achieve design closure for this hardware component under development.
StatusFinished
Effective start/end date7/1/146/30/15

Funding

  • Universities Research Association, Inc. (14-S-35)

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High energy physics
Thermoanalysis
Experiments
Colliding beam accelerators
Integrated circuits
Energy dissipation
Heat generation
Computer hardware
Pattern recognition
Hardware
Networks (circuits)
Hot Temperature