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CERN Document Server 20 notices trouvées  1 - 10suivant  aller vers la notice: La recherche a duré 0.66 secondes. 
1.
Beam induced heat load instrumentation installed in LHC during the Long Shutdown 2 / Bradu, B (CERN) ; Brodzinski, K (CERN) ; Casas-Cubillos, J (CERN) ; Delikaris, D (CERN) ; Deschamps, J B (CERN) ; Le Naour, S (CERN) ; Pezzetti, M (CERN) ; Tavian, L (CERN) ; Tovar, A (CERN) ; Sisti, M (CERN) et al.
During the second run of the Large Hadron Collider (LHC) between 2015 and 2018, significant beam induced heat loads have been observed on the beam screens circuits impacting the cryogenic system capacity, mainly due to the electron clouds generated by the beams. To validate these measurements and to obtain precise heat load assessments and comparison with preliminary calculations based on existing hardware equipment at selected locations, it was decided to add new cryogenic instrumentation around the machine. [...]
2022 - 8 p. - Published in : IOP Conf. Ser. Mater. Sci. Eng. 1240 (2022) 012043 Fulltext: PDF;
In : Cryogenic Engineering Conference and International Cryogenic Materials Conference, Online, 19 - 23 Jul 2021, pp.012043
Notice détaillée - Notices similaires
2.
Final report on the Controlled Cold Helium Spill Test in the LHC tunnel at CERN / Dufay-Chanat, L (CERN) ; Bremer, J (CERN) ; Casas-Cubillos, J (CERN) ; Chorowski, M (Wroclaw Tech. U.) ; Grabowski, M (Wroclaw Tech. U.) ; Jedrusyna, A (Wroclaw Tech. U.) ; Lindell, G (CERN) ; Nonis, M (CERN) ; Koettig, T (CERN) ; Vauthier, N (CERN) et al.
The 27 km circumference LHC underground tunnel is a space in which the helium cooled LHC magnets are installed. The vacuum enclosures of the superconducting magnets are protected by over-pressure safety relief devices that open whenever cold helium escapes either from the magnet cold enclosure or from the helium supply headers, into this vacuum enclosure. [...]
2015 - Published in : IOP Conf. Ser. Mater. Sci. Eng. 101 (2015) 012123 IOP Open Access article: PDF;
In : Advances in Cryogenic Engineering: Cryogenic Engineering Conference, Tucson, AZ, USA, 28 Jun - 2 Jul 2015, pp.012123
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3.
Controlled Cold Helium Spill Test in the LHC Tunnel at CERN / Koettig, T (CERN) ; Casas-Cubillos, J (CERN) ; Chorowski, M (Wroclaw Tech. U.) ; Dufay-Chanat, L (CERN) ; Grabowski, M (Wroclaw Tech. U.) ; Jedrusyna, A (Wroclaw Tech. U.) ; Lindell, G (CERN) ; Nonis, M (CERN) ; Vauthier, N (CERN) ; van Weelderen, R (CERN) et al.
The helium cooled magnets of the LHC particle accelerator are installed in a confined space, formed by a 27 km circumference 3.8 m diameter underground tunnel. The vacuum enclosures of the superconducting LHC magnets are protected by a lift plate against excessive overpressure created by eventual leaks from the magnet helium bath, or from the helium supply headers. [...]
2015 - 9 p. - Published in : Phys. Procedia 67 (2015) 1074-1082 Elsevier Open Access article: PDF;
In : 25th International Cryogenic Conference & International Cryogenic Materials Conference 2014, Twente U., Enschede, The Netherlands, 07 - 11 Jul 2014, pp.1074-1082
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4.
Analysis of the Failures and Corrective Actions for the LHC Cryogenics Radiation Tolerant Electronics and its Field Instruments / Balle, Ch (CERN) ; Casas-Cubillos, J (CERN) ; Vauthier, N (CERN)
The LHC cryogenic system radiation tolerant electronics and their associated field instruments have been in nominal conditions since before the commissioning of the first LHC beams in September 2008. [...]
CERN-ACC-2014-0322. - 2014. - 8 p.
Full text
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5.
Main Consolidations and Improvements of the Control System and Instrumentation for the LHC Cryogenics / Fluder, C (CERN) ; Blanco, E (CERN) ; Bremer, J (CERN) ; Bremer, K (CERN) ; Ivens, B (CERN) ; Casas-Cubillos, J (CERN) ; Claudet, S (CERN) ; Gomes, P (CERN) ; Ivens, B (CERN) ; Perin, A (CERN) et al.
Operation of the LHC during 2010 and 2011 with 3.5 TeV beam energy and luminosity up to 3.65x1033 cm-2 s-1, led to radiation-induced failures of micro-electronic devices used in the cryogenic control system. [...]
CERN-ATS-2013-005. - 2013. - 5 p.
Full text
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6.
Accuracy of the Approximation Function Deduced from the Fixed 3-Points Calibration Delivered with the Cernox™ Sensor / Balle, C (CERN) ; Casas, J (CERN) ; Fortescue-Beck, E (CERN) ; Vauthier, N (CERN)
The cernox™ sensor is delivered with a 3-point resistance versus temperature cal-ibration that permits the construction of an individual interpolation table by using the data in the CERN thermometer database. [...]
CERN-ATS-2013-003. - 2013. - 5 p.
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7.
Expected Accuracy when using Non-Calibrated CernoxTM Sensors / Casas-Cubillos, J (CERN) ; Vauthier, N (CERN)
Within the ITER-CERN collaboration agreement, task “PROCUREMENT OF CRYOGENIC THERMOMETERS TO MONITOR ITER MAGNETS AND FEEDER TEMPERATURES”, CERN is investigating what would be the expected accuracy when using non-calibrated Cernox™ temperature sensors at 4.2 K. [...]
CERN-ATS-2012-086. - 2012. - 7 p.
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8.
First Assessment of Reliability Data for the LHC Accelerator and Detector Cryogenic System Components / Perinic, G (CERN) ; Claudet, S (CERN) ; Alonso-Canella, I (CERN) ; Balle, C (CERN) ; Barth, K (CERN) ; Bel, J F (CERN) ; Benda, V (CERN) ; Bremer, J (CERN) ; Brodzinski, K (CERN) ; Casas-Cubillos, J (CERN) et al.
The Large Hadron Collider (LHC) cryogenic system comprises eight independent refrigeration and distribution systems that supply the eight 3.3 km long accelerator sectors with cryogenic refrigeration power as well as four refrigeration systems for the needs of the detectors ATLAS and CMS. In order to ensure the highest possible reliability of the installations, it is important to apply a reliability centred approach for the maintenance. [...]
CERN-ATS-2012-006.- Geneva : CERN, 2012 - 9 p. - Published in : AIP Conf. Proc. 1434 (2012) 1399-1406 Fulltext: PDF;
In : Cryogenic Engineering Conference & International Cryogenic Material Conference: Transactions of the Cryogenic Engineering Conference - CEC, Volume 57, Spokane, WA, USA, 13 - 17 Jun 2011, pp.1399-1406
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9.
Instrumentation Status of the Low-β Magnet Systems at the Large Hadron Collider (LHC) / Darve, C (Fermilab) ; Balle, C (CERN) ; Casas-Cubillos, J (CERN) ; Perin, A (CERN) ; Vauthier, N (CERN)
The low-β magnet systems are located in the Large Hadron Collider (LHC) insertion regions around the four interaction points. [...]
CERN-ATS-2011-018. - 2011. - 9 p.
Fulltext
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10.
Instrumentation status of the low-b magnet systems at the Large Hadron Collider (LHC) / Darve, C. (Fermilab) ; Balle, C. (CERN) ; Casas-Cubillos, J. (CERN) ; Perin, A. (CERN) ; Vauthier, N. (CERN)
The low-beta magnet systems are located in the Large Hadron Collider (LHC) insertion regions around the four interaction points. They are the key elements in the beams focusing/defocusing process allowing proton collisions at luminosity up to 10**34/cm**2s. [...]
arXiv:1208.5779; FERMILAB-CONF-10-583-AD.- 2011 - 6 p. - Published in : , pp. 525-530 Fulltext: FERMILAB-CONF-10-583-AD - PDF; fermilab-conf-10-583-ad - PDF; Preprint: PDF; External link: Fermilab Library Server (fulltext available)
In : 23rd International Cryogenic Engineering Conference and International Cryogenic Materials Conference 2010, Wroclaw, Poland, 19 - 23 Jul 2010, pp.525-530
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