| Autor: |
G. Passardi, J. Schmid, F. Haug, W. K. Erdt, D. Delikaris, D. Güsewell, G. Winkler, J.P. Dauvergne, J.-M. Rieubland, Ph. Lebrun |
| Rok vydání: |
1994 |
| Předmět: |
|
| Zdroj: |
Advances in Cryogenic Engineering ISBN: 9781461360742 |
| Popis: |
In 1992, the liquid-helium cooling capacity installed at CERN was nearly tripled, passing from 6.8 to 19.7 kW/4.5 K (entropy equivalent*). Further tripling is expected in 1993. While the 6.8 kW available in 1991 were produced by 14 plants of moderate size (500 W/4.5 K average), two of the four plants added in 1992 have unit capacities of 6 kW/4.5 K. Four plants of 12 kW/4.5 K, upgradable to 18 kW/4.5 K in a later phase, are presently being installed. Most of the smaller plants are associated with particle physics experiments, cooling superconducting magnets of particle detectors and high-gradient focusing magnets of colliding-beam experiments. Six plants provide liquid helium for development laboratories and test facilities. The recently acquired multi-kW plants will be integral parts of the collider itself. Their present function is to cool superconducting RF cavities designed to increase the beam energy of the Large Electron Positron collider LEP from 50 to above 90 GeV. In the future, the same and additional plants will be available for the cooling of the superconducting magnet ring of the planned Large Hadron Collider LHC. To this end, they will be equipped with complementary 1.8 K final stages. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
