CERN Accelerating science

Preprint
Report number	LHC-PROJECT-Report-1182 ; CERN-LHC-PROJECT-Report-1182
Title	The commissioning of the instrumentation for the LHC tunnel cryogenics
Author(s)	Avramidou, R ; Anastasopoulos, K ; Bamis, C ; Casas-Cubillos, J ; Dragoneas, A ; Fampris, X ; Fernandez-Penacoba, G ; Gomes, P ; Gousiou, E ; Jeanmonod, N ; Karagiannis, F ; Koumparos, A ; Leontsinis, S ; Lopez-Lorente, A ; Patsouli, A ; Polychroniadis, I ; Suraci, A ; Theodoropoulos, G ; Vauthier, N ; Vottis, C
Publication	2007
Imprint	01 Nov 2007
Number of pages	11
Presented at	Hawaii 2007 Nuclear Science Symposium and Medical Imaging Conference, Hawaii, United States Of America, 28 Oct - 3 Nov 2007
Subject category	Accelerators and Storage Rings
Accelerator/Facility, Experiment	CERN LHC
Abstract	The Large Hadron Collider (LHC) at CERN is a superconducting accelerator and proton-proton collider of circumference of 27 km, lying about 100 m underground. Its operation relies on 1232 superconducting dipoles with a field of 8.3 T and 392 superconducting quadrupoles with a field gradient of 223 T/m powered at 11.8 kA and operating in superfluid helium at 1.9 K. This paper describes the cryogenic instrumentation commissioning, the challenges and the project organization based on our 2.5 years experience.
Submitted by	evelyne.delucinge@cern.ch