Design concept and first experimental validation of the superfluid helium system for the Large Hadron Collider (LHC) project at CERN
✍ Scribed by Juan Casas; Armand Cyvoct; Philippe Lebrun; Michel Marquet; Laurent Tavian; Rob van Weelderen
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 293 KB
- Volume
- 32
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
✦ Synopsis
The superconducting magnets of the CERN Large Hadron Collider (LHC) project must be kept at their operating temperature of 1.9 K all around the 26.7 km circumference of the machine ring. For this purpose, they are immersed in static baths of pressurized helium II, acting as heat transport medium to a heat exchanger tube running along the magnet string, in which flowing saturated helium II absorbs the deposited heat at constant temperature. Proper operation of this cooling scheme requires stability of the two-phase helium flow and adequate heat transport across the helium II heat exchanger. To investigate these issues, we have conducted tests on heated two-phase flow of saturated helium II in a 24 m long tube simulating the magnet heat exchanger.