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1.
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Experimental Validation and Operation of the LHC Test String 2 Cryogenic System
/ Blanco-Viñuela, E ; Calzas, A ; Casas-Cubillos, J ; Gomes, P ; Knoops, S ; Serio, L ; Van Weelderen, R
The LHC Test String 2 is a 107-m long superconducting magnet string representing a full-cell of the LHC machine. It was designed and commissioned at CERN in order to validate the final design choices and to investigate the collective behavior and operation modes of the LHC machine systems. [...]
LHC-Project-Report-681; CERN-LHC-Project-Report-681.-
Geneva : CERN, 2004 - 9 p.
- Published in : AIP Conf. Proc. 710 (2004) 233-240
Access to fulltext document: PDF;
In : 2003 Cryogenic Engineering Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.233-240
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2.
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Large Cryogenic Infrastructure for LHC Superconducting Magnet and Cryogenic Component Tests : Layout, Commissioning and Operational Experience
/ Calzas, A ; Chanat, D ; Knoops, S ; Sanmartí, M ; Serio, L
The largest cryogenic test facility at CERN, located at Zone 18, is used to validate and to test all main components working at cryogenic temperature in the LHC (Large Hadron Collider) before final installation in the machine tunnel. In total about 1300 main dipoles, 400 main quadrupoles, 5 RF-modules, eight 1.8 K refrigeration units will be tested in the coming years. [...]
LHC-Project-Report-682; CERN-LHC-Project-Report-682.-
Geneva : CERN, 2004 - 9 p.
- Published in : AIP Conf. Proc. 710 (2004) 217-224
Access to fulltext document: PDF;
In : 2003 Cryogenic Engineering Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.217-224
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4.
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Summary of the Experimental Studies of Cold Helium Propagation along a scale model of the LHC Tunnel
/ Chorowski, M ; Fydrych, J ; Konopka-Cupial, G ; Riddone, G
The Large Hadron Collider will contain more than 95 tons of liquid and supercritical helium. The accelerator will be located in the 26.7 km underground tunnel. [...]
LHC-Project-Report-684; CERN-LHC-Project-Report-684.-
Geneva : CERN, 2004 - 9 p.
- Published in : AIP Conf. Proc. 710 (2004) 324-331
Access to fulltext document: PDF;
In : 2003 Cryogenic Engineering Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.324-331
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6.
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Cryogenic Testing of High Current By-pass Diode Stacks for the Protection of the Superconducting Magnets in the LHC
/ Brown, D ; Della Corte, A ; Fiamozzi-Zignani, C ; Gharib, A ; Hagedorn, Dietrich ; Rout, C ; Turtu, S
For the protection of the LHC superconducting magnets, about 2100 specially developed by-pass diodes were manufactured by DYNEX SEMICONDUCTOR LTD (Lincoln, GB) and about 1300 of these diodes were mounted into diode stacks and submitted to tests at cryogenic temperatures. To date about 800 dipole diode stacks and about 250 quadrupole diode stacks for the protection of the superconducting lattice dipole and lattice quadrupole magnets have been assembled at OCEM (Bologna,Italy) and successfully tested in liquid helium at ENEA (Frascati, Italy). [...]
LHC-Project-Report-686; CERN-LHC-Project-Report-686.-
Geneva : CERN, 2004 - 9 p.
- Published in : AIP Conf. Proc. 711 (2004) 755-762
Access to fulltext document: PDF;
In : 2003 International Cryogenic Materials Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.755-762
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7.
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What is Common in the Training of the Large Variety of Impregnated Corrector Magnets for the LHC
/ Ijspeert, Albert ; ten Kate, H H J
The Large Hadron Collider (LHC) will be equipped with about 5000 superconducting corrector magnets of 10 different types, ranging from dipoles through quadrupoles, sextupoles and octupoles to decapoles and dodecapoles. Four wires are used with 2 copper/superconductor ratios. [...]
LHC-Project-Report-687; CERN-LHC-Project-Report-687.-
Geneva : CERN, 2004 - 9 p.
- Published in : AIP Conf. Proc. 711 (2004) 913-920
Access to fulltext document: PDF;
In : 2003 International Cryogenic Materials Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.913-920
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8.
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Radiation Resistance and Life Time Estimates at Cryogenic Temperatures of Series produced By-pass Diodes for the LHC Magnet Protection
/ Denz, R ; Gharib, A ; Hagedorn, Dietrich
For the protection of the LHC superconducting magnets about 2100 specially developed by-pass diodes have been manufactured in industry and more than one thousand of these diodes have been mounted into stacks and tested in liquid helium. By-pass diode samples, taken from the series production, have been submitted to irradiation tests at cryogenic temperatures together with some prototype diodes up to an accumulated dose of about 2 kGy and neutron fluences up to about 3.0 1013 n cm-2 with and without intermediate warm up to 300 K. [...]
LHC-Project-Report-688; CERN-LHC-Project-Report-688.-
Geneva : CERN, 2004 - 9 p.
- Published in : AIP Conf. Proc. 711 (2004) 763-770
Access to fulltext document: PDF;
In : 2003 International Cryogenic Materials Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.763-770
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9.
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Final Design and Experimental Validation of the Thermal Performance of the LHC Lattice Cryostats
/ Bourcey, N ; Capatina, O ; Parma, V ; Poncet, A ; Rohmig, P ; Serio, L ; Skoczen, Blazej ; Tock, J P ; Williams, L R
The recent commissioning and operation of the LHC String 2 have given a first experimental validation of the global thermal performance of the LHC lattice cryostat at nominal cryogenic conditions. The cryostat designed to minimize the heat inleak from ambient temperature, houses under vacuum and thermally protects the cold mass, which contains the LHC twin-aperture superconducting magnets operating at 1.9 K in superfluid helium. [...]
LHC-Project-Report-689; CERN-LHC-Project-Report-689.-
Geneva : CERN, 2004 - 8 p.
- Published in : AIP Conf. Proc. 710 (2004) 487-493
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In : 2003 Cryogenic Engineering Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.487-493
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10.
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Anisotropic Constitutive Model of Strain-induced Phenomena in Stainless Steels at Cryogenic Temperatures
/ Garion, C ; Skoczen, Blazej
A majority of the thin-walled components subjected to intensive plastic straining at cryogenic temperatures are made of stainless steels. The examples of such components can be found in the interconnections of particle accelerators, containing the superconducting magnets, where the thermal contraction is absorbed by thin-walled, axisymetric shells called bellows expansion joints. [...]
CERN-AT-2004-005-CRI.-
Geneva : CERN, 2004 - 8 p.
- Published in : AIP Conf. Proc. 711 (2004) 159-166
Access to fulltext document: PDF; External link: Access to fulltext document
In : 2003 International Cryogenic Materials Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.159-166
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11.
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Analysis of Current Redistribution in a CICC under Transient Heat Pulses
/ Bottura, L (CERN) ; Bruzzone, P L (EPFL/CRP, Fusion Technology Div., Villigen) ; Marinucci, C (EPFL/CRP, Fusion Technology Div., Villigen)
We have performed experiments and simulations of the current distribution process in a CICC with the aim to understand better the coupled thermal, hydraulic and electric process that leads to a stable or unstable transient cable behaviour. The cable, wound from 128 Nb$_{3}$Sn and pure copper strands, has been tested in the SULTAN facility. [...]
CERN-AT-2004-004-MTM.-
Geneva : CERN, 2004 - 9 p.
- Published in : AIP Conf. Proc. 711 (2004) 433-440
Access to fulltext document: PDF; External link: Access to fulltext document
In : 2003 International Cryogenic Materials Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.433-440
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12.
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Quench Induced Pressure Rise in the Cooling Pipes of the Atlas Barrel Toroid Model
/ Haug, F (CERN) ; Bottura, L (CERN) ; Broggi, F (INFN/LASA, Segrate, Milano, Italy) ; Junker, S (CERN)
The ATLAS superconducting magnet system consists of a Barrel Toroid, two End-Cap Toroids and a Solenoid. Eight individual racetrack coils will be assembled to form the Barrel Toroid with overall dimensions of 26 m length and 20 m diameter. [...]
CERN-AT-2004-003-ECR.-
Geneva : CERN, 2004 - 9 p.
- Published in : AIP Conf. Proc. 710 (2004) 711-718
Access to fulltext document: PDF; External link: Access to fulltext document
In : 2003 Cryogenic Engineering Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.711-718
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13.
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The Common Cryogenic Test Facility for the Atlas Barrel and End-Cap Toroid Magnet
/ Delruelle, N ; Haug, F ; Junker, S ; Passardi, Giorgio ; Pengo, R ; Pirotte, O
The large ATLAS toroidal superconducting magnet made of the Barrel and two End-Caps needs extensive testing at the surface of the individual components prior to their final assembly into the underground cavern of LHC. A cryogenic test facility specifically designed for cooling sequentially the eight coils making the Barrel Toroid (BT) has been fully commissioned and is now ready for final acceptance of these magnets. [...]
CERN-AT-2004-002-ECR.-
Geneva : CERN, 2004 - 7 p.
- Published in : AIP Conf. Proc. 710 (2004) 249-256
Access to fulltext document: PDF; External link: Access to fulltext document
In : 2003 Cryogenic Engineering Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.249-256
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14.
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Commissioning and First Operation of the Cryogenics for the CERN Axion Solar Telescope (CAST)
/ Barth, K ; Delikaris, D ; Passardi, Giorgio ; Pezzetti, M ; Pirotte, O ; Stewart, L ; Vullierme, B ; Walckiers, L ; Zioutas, Konstantin
A new experiment, the CERN Axion Solar Telescope (CAST) was installed and commissioned in 2002. Its aim is to experimentally prove the existence of an as yet hypothetical particle predicted by theory as a solution of the strong CP problem and possible candidate for galactic dark matter. [...]
CERN-AT-2004-001-ECR.-
Geneva : CERN, 2004 - 8 p.
- Published in : AIP Conf. Proc. 710 (2004) 168-175
Access to fulltext document: PDF; External link: Access to fulltext document
In : 2003 Cryogenic Engineering Conference, Anchorage, AK, USA, 22 - 26 Sep 2003, pp.168-175
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