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2001_CEC/ICMC
18 items
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1.
He II Co-Current Two Phase Flow at High Vapor Velocities / Di Muoio, E ; Jäger, B ; Puech, L ; Rousset, B ; Thibault, P ; Vallcorba, R ; Van Weelderen, R ; Wolf, P E
LHC-Project-Report-517 ; CERN-LHC-Project-Report-517. - 2001. - 9 p.
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2.
Optical Investigations of HeII Two Phase Flow / Di Muoio, E ; Jäger, B ; Puech, L ; Rousset, B ; Thibault, P ; Van Weelderen, R ; Wolf, P E
The LHC development program relies on cryogenic tests of prototype and model magnets. This vigorous program is pursued in a dedicated test facility based on several vertical cryostats working at superfluid helium temperatures. [...]
LHC-Project-Report-516; CERN-LHC-Project-Report-516.- Geneva : CERN, 2002 - 9 p. Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.1675-1682 - Please contact the library if you need to access this document.
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3.
The Test Facility for the Short Prototypes of the LHC Superconducting Magnets / Arn, A ; Bottura, L ; Giloux, C ; Mompo, R ; Siemko, A ; Venturini-Delsolaro, W ; Walckiers, L
The LHC development program relies on cryogenic tests of prototype and model magnets. This vigorous program is pursued in a dedicated test facility based on several vertical cryostats working at superfluid helium temperatures. [...]
LHC-Project-Report-515; CERN-LHC-Project-Report-515.- Geneva : CERN, 2002 - 9 p. - Published in : AIP Conf. Proc. 613 (2002) 106-113 Access to fulltext document: PDF;
In : Cryogenic Engineering Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.106-113 - Please contact the library if you need to access this document.
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4.
Elastic Modulus Measurements of the LHC Dipole Superconducting Coil at 300 K and at 77 K / Couturier, K ; Ferracin, P ; Todesco, Ezio ; Tommasini, D ; Scandale, Walter
We present measurements of the stress-displacement relation for the superconducting coils used in the Large Hadron Collider main magnets (dipoles and quadrupoles). This mechanical property is relevant to determine the correct amount of azimuthal pre-stress to be imposed on the coil. [...]
LHC-Project-Report-514; CERN-LHC-Project-Report-514.- Geneva : CERN, 2002 - 7 p. - Published in : AIP Conf. Proc. 613 (2002) 377-382 Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.377-382 - Please contact the library if you need to access this document.
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5.
Thermal Contraction Measurements of the Superconducting Coil of the Main Magnets for the Large Hadron Collider / Ferracin, P ; Todesco, Ezio ; Tommasini, D ; Scandale, Walter
LHC-Project-Report-513; CERN-LHC-Project-Report-513.- Geneva : CERN, 2002 - 6 p. - Published in : AIP Conf. Proc. 613 (2002) 372-376 Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.372-376 - Please contact the library if you need to access this document.
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6.
Quench Propagation in the Superconducting 6 kA Flexible Busbars of the LHC / Calvi, M ; Herzog, R ; Pelegrin-Carcelen, J M ; Sonnemann, F
Flexible superconducting cables with currents up to 6 kA will be used to power magnets individually in the insertion regions of the LHC. In case of a quench, the currents in these circuits will decay very fast (with time constants of about 200 ms) such that relatively small copper cross sections are sufficient for these busbars. [...]
LHC-Project-Report-512; CERN-LHC-Project-Report-512.- Geneva : CERN, 2002 - 9 p. - Published in : AIP Conf. Proc. 613 (2002) 583-590 Access to fulltext document: PDF;
In : Cryogenic Engineering Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.583-590 - Please contact the library if you need to access this document.
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7.
Quench Propagation and Heating in the Superconducting 600 A Auxiliary Busbars of the LHC / Calvi, M ; Herzog, R ; Sonnemann, F
In the Large Hadron Collider (LHC) at CERN 22 km of flexible superconducting cable, the auxiliary busbar cable, will conduct currents of up to 600 A to a large number of corrector magnets distributed throughout the accelerator. A prototype cable with 42 active conductors underwent several experiments to measure the hot spot temperature and the quench propagation velocity as a function of the current. [...]
LHC-Project-Report-511; CERN-LHC-Project-Report-511.- Geneva : CERN, 2004 - 9 p. - Published in : AIP Conf. Proc. 613 (2004) 575-582 Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.575-582 - Please contact the library if you need to access this document.
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8.
A Large-scale Test Facility for Heat Load Measurements down to 1.9 K / Dufay, L ; Policella, C ; Rieubland, Jean Michel ; Vandoni, Giovanna
Laboratory-scale tests aimed at minimizing the thermal loads of the LHC magnet cryostat have gone along with the development of the various mechanical components. For final validation of the industrial design with respect to heat inleaks between large surfaces at different temperatures, a full-scale test cryostat has been constructed. [...]
LHC-Project-Report-510; CERN-LHC-Project-Report-510.- Geneva : CERN, 2002 - 9 p. - Published in : AIP Conf. Proc. 613 (2002) 98-105 Access to fulltext document: PDF;
In : Cryogenic Engineering Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.98-105 - Please contact the library if you need to access this document.
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9.
Plastic Strain Induced Damage Evolution and Martensitic Transformation in Ductile Materials at Cryogenic Temperatures / Garion, C ; Skoczen, Blazej
The Fe-Cr-Ni stainless steels are well known for their ductile behaviour at cryogenic temperatures. This implies development and evolution of plastic strain fields in the stainless steel components subjected to thermo-mechanical loads at low temperatures. [...]
LHC-Project-Report-509; CERN-LHC-Project-Report-509.- Geneva : CERN, 2002 - 9 p. - Published in : AIP Conf. Proc. 613 (2002) 170-177 Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.170-177 - Please contact the library if you need to access this document.
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10.
An Experimental Study of Cold Helium Dispersion in Air / Chorowski, M ; Konopka, G ; Riddone, G
The Large Hadron Collider (LHC) presently under construction at CERN, will contain about 100 tons of helium mostly located in the underground tunnel and in caverns. Potential failure modes of the accelerator, which may be followed by helium discharge to the tunnel, have been identified and the corresponding helium flows calculated. [...]
LHC-Project-Report-508; CERN-LHC-Project-Report-508.- Geneva : CERN, 2002 - 9 p. - Published in : AIP Conf. Proc. 613 (2002) 1452-1459 Access to fulltext document: PDF;
In : Cryogenic Engineering Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.1452-1459 - Please contact the library if you need to access this document.
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11.
Update of a Cooldown and Warmup Study for the Large Hadron Collider / Liu, L ; Riddone, G ; Tavian, L
The paper presents the inventory of components and materials for LHC magnets, especially for main dipoles and quadrupoles. A mathematical model for LHC transient modes, such as cooldown and warmup of a magnet, a standard cell and the eight LHC sectors, has been developed on the basis of the up-to-date layout of the LHC machine, and validated by experimental data. [...]
LHC-Project-Report-507; CERN-LHC-Project-Report-507.- Geneva : CERN, 2002 - 9 p. - Published in : AIP Conf. Proc. 613 (2002) 76-83 Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.76-83 - Please contact the library if you need to access this document.
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12.
Non-Linear Advanced Control of the LHC Inner Triplet Heat Exchanger Test Unit / Blanco-Viñuela, E (CERN) ; Casas-Cubillos, J (CERN) ; De Prada-Moraga, C (Valladolid U.) ; Cristea, S (Valladolid U.)
The future Large Hadron Collider (LHC) at CERN will include eight interaction region final focus magnet systems, the so-called "Inner Triplet", one on each side of the four beam collision points. The Inner Triplets will be cooled in a static bath of pressurized He II nominally at 1.9 K. [...]
LHC-Project-Report-506; CERN-LHC-Project-Report-506.- Geneva : CERN, 2002 - 9 p. - Published in : AIP Conf. Proc. 613 (2002) 1597-1604 Access to fulltext document: PDF;
In : Cryogenic Engineering Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.1597-1604 - Please contact the library if you need to access this document.
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13.
He II Heat Exchanger Test Unit for the LHC Inner Triplet / Blanco-Viñuela, E ; Darve, C ; Huang, Y ; Nicol, T H ; Peterson, T ; Van Weelderen, R /CERN-US LHC Construction Collaboration
The Inner Triplet Heat Exchanger Test Unit (IT-HXTU) is a 30-m long thermal model designed at Fermilab, built in US industry, fully automated and tested at CERN as part of the US LHC program to develop the LHC Interaction Region quadrupole system. The cooling scheme of the IT-HXTU is based on heat exchange between stagnant pressurized He II in the magnet cold mass and saturated He II (two-phase) flowing in a heat exchanger located outside of and parallel to the cold mass. [...]
LHC-Project-Report-505; CERN-LHC-Project-Report-505.- Geneva : CERN, 2002 - 9 p. - Published in : AIP Conf. Proc. 613 (2002) 147-154 Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.147-154 - Please contact the library if you need to access this document.
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14.
Study of Materials and Adhesives for Superconducting Cable Feedthroughs / Perin, A ; Macias-Jareño, R ; Métral, L
Powering superconducting magnets requires the use of cryogenic feedthroughs for the superconducting cables capable of withstanding severe thermal, mechanical and electrical operating conditions. Such feedthrough shall provide the continuity of the superconducting circuit while ensuring a hydraulic separation at cryogenic temperature. [...]
LHC-Project-Report-504; CERN-LHC-Project-Report-504.- Geneva : CERN, 2002 - 9 p. - Published in : AIP Conf. Proc. 613 (2002) 551-558 Access to fulltext document: PDF;
In : Cryogenic Engineering Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.551-558 - Please contact the library if you need to access this document.
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15.
Advanced Superconducting Technology for Global Science : The Large Hadron Collider at CERN / Lebrun, P
The Large Hadron Collider (LHC), presently in construction at CERN, the European Organisation for Nuclear Research near Geneva (Switzerland), will be, upon its completion in 2005 and for the next twenty years, the most advanced research instrument of the world's high-energy physics community, providing access to the energy frontier above 1 TeV per elementary constituent. Re-using the 26.7-km circumference tunnel and infrastructure of the past LEP electron-positon collider, operated until 2000, the LHC will make use of advanced superconducting technology - high-field Nb-Ti superconducting magnets operated in superfluid helium and a cryogenic ultra-high vacuum system - to bring into collision intense beams of protons and ions at unprecedented values of center-of-mass energy and luminosity (14 TeV and 1034 cm-2.s-1, respectively with protons). [...]
LHC-Project-Report-499; CERN-LHC-Project-Report-499.- Geneva : CERN, 2002 - 13 p. - Published in : AIP Conf. Proc. 613 (2002) 3-14 Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.3-14 - Please contact the library if you need to access this document.
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16.
Conclusions on 8 Years Operation of the LEP 4.5 K Refrigeration System at CERN / Bangert, N ; Claudet, S ; Gayet, P ; Sanmartí, M
After 11 years of operation the Large Electron/Positron collider (LEP) was stopped in November 2000. Since 1993 a cryogenic system has been used to supply up to 72 superconducting (SC) cavity modules, using four large liquid-helium refrigerators at 4.5 K. [...]
CERN-LHC-2001-004-ACR.- Geneva : CERN, 2002 - 9 p. Report Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.239-246 - Please contact the library if you need to access this document.
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17.
The Proximity Cryogenic System for the ATLAS Toroidal Magnets / Baynham, D Elwyn ; Bradshaw, T ; Brown, G ; Cragg, D ; Crook, M ; Haug, F ; Mayri, C ; Orlowska, A H ; Passardi, Giorgio ; Pengo, R et al.
ATLAS is a very high-energy detector for the Large Hadron Collider (LHC) at CERN. The superconducting magnet used to provide the required magnetic field consists of four sub-systems: a central solenoid and a very large toroidal magnet comprising two end-cap magnets and the barrel toroid magnet. [...]
LHC-Project-Report-519; CERN-LHC-Project-Report-519.- Geneva : CERN, 2002 - 7 p. - Published in : AIP Conf. Proc. 613 (2002) 155-160 Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.155-160 - Please contact the library if you need to access this document.
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18.
A Cryogenic High-Reynolds Turbulence Experiment at CERN / Bézaguet, Alain-Arthur ; Dauvergne, J P ; Knoops, S ; Lebrun, P ; Pezzetti, M ; Pirotte, O ; Bret, J L ; Chabaud, B ; Garde, G ; Guttin, C et al.
The potential of cryogenic helium flows for studying high-Reynolds number turbulence in the laboratory has been recognised for a long time and implemented in several small-scale hydrodynamic experiments. With its large superconducting particle accelerators and detector magnets, CERN, the European Laboratory for Particle Physics, has become a major world center in helium cryogenics, with several large helium refrigerators having capacities up to 18 kW @ 4.5 K. [...]
CERN-LHC-2001-006-ECR.- Geneva : CERN, 2002 - 9 p. Report - Published in : AIP Conf. Proc. 613 (2002) 1399-1406 Access to fulltext document: PDF;
In : Joint Cryogenic Engineering Conference And International Cryogenic Materials Conference, Madison, WI, USA, 16 - 20 Jul 2001, pp.1399-1406 - Please contact the library if you need to access this document.
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