Category: Article
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ARTICLE 0
CONTENU ICI
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Thermal Contact Interfaces
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Material properties
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Development of High-Density signal Feedthroughs for Noble Liquid Calorimeters
The next generation of noble liquid calorimeters requires the development of high-density signal feedthroughs to ensure the signal transfer from liquid argon in the calorimeter to the warm electronics. For this, at the Cryolab, new high-density signal feedthroughs are being developed. To be able to test different flanges configurations of the feedthroughs (including different designs…
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High-density Signal Feedthroughs for Liquid Argon Calorimeters
ATLAS (A Toroidal LCH ApparatuS – www.atlas.cern) is one of the detectors at the CERN Large Hadron Collider (LHC), developed to study the interactions of proton or heavy-ion head-on collisions. In the central parts of this detector are located the liquid argon calorimeters (one barrel and two end-cap) housed in three independent cryostats, which have…
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Cryogenics for ProtoDUNE Detectors
The DUNE (Deep Underground Neutrino Experiment) project is a scientific international collaboration dedicated to neutrino science and proton decay studies (www.dunescience.org). Two prototypes, the ProtoDUNE detectors, have been constructed at the neutrino platform at CERN. Based on the TPCs (time projection chambers) technology, they have been developed to test two variations of detection technique that…
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Glass cryostat for He II studies
The Cryolab is equipped with two glass cryostats that can be used for didactic demonstrations of He II properties in outreach activities or training. The glass cryostats also offer a unique opportunity for research into more specific properties such as boiling conditions and visualisation of critical heat flux in He II, or even for calibration…
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Cryogenic Current Comparator BCCCA “zero boil off” cryostat
The SQUID measurement system of the beam current in the Antimatter Factory is a new type of beam instrumentation operating in 4.2 K LHe. A LHe “zero boil off” cryostat has been integrated into the AD tunnel beam tube to precisely measure the antiproton beam current. Special care is taken to minimise the influence of…
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HL-LHC beam screen thermal performance validation
A full-scale mock-up test stand to test the thermal performance of the new Tungsten based beam screens for HL-LHC was tested. The horizontal test stand mimics all temperature and cooling fluid conditions as they will be present in the real HL-LHC application. This includes a LN2 cooled thermal screen, a LHe 4.2 K reservoir, two…
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Cryogenics for a liquid Krypton purity monitor
To be able to determine the relevant purity level of Kr, which has to be filled in the NA62 storage Dewar, a condensation chamber is built to accommodate a time projection chamber (TPC). A purity level of Krypton <5 pbb(Oxygen equivalent) has been reached by an extensive purge (4 x vacuum to 10-3 mbar and…