(19)

(11)

EP 2 753 887 A1

(12)

(43) Date of publication: 16.07.2014 Bulletin 2014/29 (21) Application number: 11755022.8 (22) Date of filing: 09.09.2011

(51) International Patent Classification (IPC):  F25B 23/00(2006.01) (86) International application number: PCT/EP2011/004557 (87) International publication number: WO 2013/034170 (14.03.2013 Gazette 2013/11)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR (71) Applicants: CERN - European Organization For Nuclear Research 1211 Geneva 23 (CH) Nikhef 1098 XG Amsterdam (NL)	(72) Inventor: BART, Verlaat F-01170 Crozet (FR) (74) Representative: Lucke, Andreas  Boehmert & Boehmert Pettenkoferstrasse 20-22 80336 München 80336 München (DE)