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Udo Wagner (CERN)09/06/2016, 14:00
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Dr Philippe-E. Roche (Grenoble CNRS)09/06/2016, 14:30
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Mr John Jurns (ESS)09/06/2016, 14:50
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Mr Jérôme Pellé (GTT)09/06/2016, 15:10
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09/06/2016, 15:30
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John Jurns (European Spallation Source ESS AB)
The European Spallation Source (ESS) project is a neutron spallation source research facility under construction in Sweden. A 5 MW, 2.0 GeV, 62.5 mA proton beam generates fast neutrons at the spallation target. Cold neutrons are moderated by para liquid hydrogen circulating through four uniquely designed moderators at the target. The hydrogen is in turn cooled from a helium cryogenic plant...
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Dr Philippe-E. Roche (Grenoble CNRS)
After one decade of hibernation and few key improvements, the turbulence experiment GReC was re-started in 2015, thanks to EC support (Consortium of European High-Performance Infrastructure in Turbulence, EuHit).
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This experiment consists in a 1-m-diameter jet of helium at 5 K, with a mass flow ranging from 20 to 250 g/s supplied by a 6 kW refrigerator. Academic-grade turbulence is generated... -
Mr Jérôme Pellé (GTT)
GTT, a French Engineering company specialized in the design of cryogenic containment systems works with CERN on developments of specific cryostats dedicated to the CERN activities. Thanks to a design done with components well adapted to cryogenic specificities, GTT proposes solutions fulfilling the project needs. A perfect tightness of the containment system associated with high thermal...
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Udo Wagner (CERN)
Of the different experiments installed in the LHC machine, two detectors, ATLAS and CMS, use dedicated cryogenic equipment.
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In this presentation, we will review the availability data for the helium cryogenics of both detectors for the operating years 2011 to 2015 and analyse the different reasons that led to down time.
For the operating year 2015, the availability of the CMS experiment was...
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