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2.
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A Possible 1.8 K Refrigeration Cycle for the Large Hadron Collider
/ Millet, F ; Roussel, P ; Tavian, L ; Wagner, U
The Large Hadron Collider (LHC) under construction at the European Laboratory for Particle Physics, CERN, will make use of superconducting magnets operating below 2.0 K. This requires, for each of the eight future cryogenic installations, an isothermal cooling capacity of up to 2.4 kW obtained by vaporisation of helium II at 1.6 kPa and 1.8 K. [...]
LHC-Project-Report-140; CERN-LHC-Project-Report-140.-
Geneva : CERN, 1998 - 8 p.
- Published in : Adv. Cryog. Eng., A 43 (1998) 387-393
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3.
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Design of the second series 15 m LHC prototype dipole magnet cryostats
/ Brunet, J C ; Parma, Vittorio ; Peón-Hernández, G ; Poncet, Alain ; Rohmig, P ; Skoczen, Blazej ; Williams, L R
A first series of six LHC 10 m long prototype dipole magnets and cryostats have been manufactured in European Industry and the assembled cryo-magnets tested singly and connected in series in a test string at CERN between March 1994 and December 1996. During the same period, an evolution in the requirements for LHC cryogenics distribution has lead the project management to adopt a separate cryo-distribution line running parallel to the LHC machine1. [...]
LHC-Project-Report-133; CERN-LHC-Project-Report-133.-
Geneva : CERN, 1998 - 8 p.
- Published in : Adv. Cryog. Eng., A 43 (1998) 435-441
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4.
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A Simplified Cryogenic Distribution Scheme for the Large Hadron Collider
/ Chorowski, M ; Erdt, W K ; Lebrun, P ; Riddone, G ; Serio, L ; Tavian, L ; Wagner, U ; Van Weelderen, R
The Large Hadron Collider (LHC), currently under construction at CERN, will make use of superconducting magnets operating in superfluid helium below 2 K. The reference cryogenic distribution scheme was based, in each 3.3 km sector served by a cryogenic plant, on a separate cryogenic distribution line which feeds elementary cooling loops corresponding to the length of a half-cell (53 m). [...]
LHC-Project-Report-143; CERN-LHC-Project-Report-143.-
Geneva : CERN, 1998 - 9 p.
- Published in : Adv. Cryog. Eng., A 43 (1998) 395-402
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6.
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Helium Recovery in the LHC Cryogenic System following Magnet Resistive Transitions
/ Chorowski, M ; Hilbert, B ; Serio, L ; Tavian, L ; Wagner, U ; Van Weelderen, R
A resistive transition (quench) of the Large Hadron Collider magnets provokes the expulsion of helium from the magnet cryostats to the helium recovery system. A high-volume, vacuum-insulated recovery line connected to several uninsulated medium-pressure gas storage tanks, forms the main constituents of the system. [...]
LHC-Project-Report-145; CERN-LHC-Project-Report-145.-
Geneva : CERN, 1998 - 9 p.
- Published in : Adv. Cryog. Eng., A 43 (1998) 467-474
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8.
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The Consequence of Self-field and Non-uniform Current Distribution on Short Sample Tests of Superconducting Cables
/ Verweij, A P
Electrical measurements on samples of superconducting cables are usually performed in order to determine the critical current $I_c$ and the n-value, assuming that the voltage U at the transition from the superconducting to the normal state follows the power law, U\sim($I/I_c$)$^n$. An accurate measurement of $I_c$ and n demands, first of all, good control of temperature and field, and precise measurement of current and voltage. [...]
LHC-Project-Report-151; CERN-LHC-Project-Report-151.-
Geneva : CERN, 1998 - 9 p.
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In : 12th International Cryogenic Materials Conference - ICMC '97, Portland, OR, USA, 28 Jul - 1 Aug 1997, pp.1051-1058
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12.
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Operational Experience with a Cryogenic Axial-Centrifugal Compressor
/ Decker, L ; Kündig, A ; Löhlein, K ; Purtschert, W ; Ziegler, B L ; Lebrun, P ; Tavian, L ; Brunovsky, I ; Tucek, L
The Large Hadron Collider (LHC), presently under construction at CERN, requires large refrigeration capacity at 1.8 K. Compression of gaseous helium at cryogenic temperatures is therefore inevitable. [...]
LHC-Project-Report-161; CERN-LHC-Project-Report-161.-
Geneva : CERN, 1998 - 4 p.
- Published in : Adv. Cryog. Eng., A 43 (1998) 637-641
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13.
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The New Superfluid Helium Cryostats for the Short Straight Sections of the CERN Large Hadron Collider (LHC)
/ Cameron, W ; Dambre, P ; Kurtyka, T ; Parma, Vittorio ; Renaglia, T ; Rifflet, J M ; Rohmig, P ; Skoczen, Blazej ; Tortschanoff, Theodor ; Trilhe, P et al.
The lattice of the CERN Large Hadron Collider (LHC) contains 364 Short Straight Section (SSS) units, one in every 53 m long half-cell. An SSS consists of three major assemblies: the standard cryostat section, the cryogenic service module, and the jumper connection. [...]
LHC-Project-Report-162; CERN-LHC-Project-Report-162.-
Geneva : CERN, 1998 - 8 p.
- Published in : Adv. Cryog. Eng., A 43 (1998) 411-418
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