Thermal design of a high gradient quadrupole for the LHC interaction regions

Author

Huang, Y. ; Kerby, J. ; Mazur, P.O. ; Peterson, T.J. ; Zlobin, A.

Author_Institution

Fermi Nat. Accel. Lab., Batavia, IL, USA

Volume

7

Issue

2

fYear

1997

fDate

6/1/1997 12:00:00 AM

Firstpage

578

Lastpage

581

Abstract

The LHC high gradient quadrupole coils are subject to a continuous heat load due to the beam-induced energy deposition during operation. All heat deposited in the coil must be removed so that the magnets will remain in a superconducting state. The quadrupole magnets are designed to be cooled with stagnant pressurized He II. This paper summarizes the heat flow analyses from the insulated coil to the boiling saturated He II for the LHC interaction region quadrupoles. The effects of cable surface heat flux and cooling channel heights on the thermal characteristics of the magnets are studied. He II heat exchanger designs, arranged internally and externally are compared.

Keywords

accelerator magnets; colliding beam accelerators; proton accelerators; storage rings; superconducting magnets; superfluid helium-4; synchrotrons; He; He II heat exchanger designs; LHC high gradient quadrupole coils; LHC interaction region quadrupoles; LHC interaction regions; beam-induced energy deposition; continuous heat load; heat flow analyses; high gradient quadrupole; stagnant pressurized He II; thermal characteristics; thermal design; Cable insulation; Cooling; Iron; Large Hadron Collider; Magnets; Superconducting cables; Superconducting coils; Temperature; Thermal resistance;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.614570

Filename

614570