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DC-DC Conversion Powering Schemes for the CMS Tracker at Super-LHC
The CMS experiment at the Large Hadron Collider (LHC) at CERN, Geneva, houses the largest silicon strip tracker ever built. For the foreseen luminosity upgrade of the LHC, the Super-LHC, however, a completely new silicon tracker will have to be constructed. One out of several major improvements...
Autores principales: | , , , , , |
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Lenguaje: | eng |
Publicado: |
2010
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Materias: | |
Acceso en línea: | http://cds.cern.ch/record/1285523 |
Sumario: | The CMS experiment at the Large Hadron Collider
(LHC) at CERN, Geneva, houses the largest silicon strip tracker ever built.
For the foreseen luminosity upgrade of the LHC, the Super-LHC, however, a
completely new silicon tracker will have to be constructed. One out of several
major improvements currently under consideration is the implementation
of a track trigger, with tracking information being provided to the first
level trigger. Such an intelligent tracker design, utilising fast digital
readout electronics, will most certainly lead to an increased power
consumption, compared to today's tracker. In combination with the desire to
reduce the amount of passive material
inside the tracking volume and the impracticality to exchange or even add
additional supply cables, a novel powering scheme will be inevitable. In this
article a powering scheme based on DC-DC conversion is proposed,
and requirements for the DC-DC converters are
discussed. Studies of important DC-DC converter quantities such as the
power efficiency, conducted and radiated noise levels, and material budget
are presented, and a possible implementation
of DC-DC buck converters into one proposed track trigger layout is sketched. |
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