TCTVB-VMTSA-TCDD area Xrays at 4L2

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Presentation transcript:

TCTVB-VMTSA-TCDD area Xrays at 4L2 V. Baglin (8/11/11) CERN TE-VSC, Geneva X-Rays made by A. Vidal (TE/VSC) and A-M Piguiet (EN/MME)

Layout LSS2 : A4L2 TCDD D1L2 LSS2L : TCTVB TCDD VAB BPMSX D1L2 VAMTF.A4L2.X DCUM = 3259.3524 VGPB.120.4L2.X D1L2 VPIA.A151.4L2.X

VMTSA son of VAMTF.A4L2.X Horizontal ellipse 180/70 Left side Right side LHCVMTSA0001

X-rays the 10-5-2011, DCUM 3259 b a Left side Top view (xray from top to bottom) a)Slight deformation of RF finger. b)No metallic noise due to loose spring Use as IS

X-rays the 10-5-2011, DCUM 3259 b Right side Top view (xray from top to bottom) b) No metallic noise due to loose spring Conform

X-rays the 7-11-2011, DCUM 3259 b a Left side Top view (xray from top to bottom) a)Strong deformation of RF finger. b) Metallic noise due to loose spring when hitting vacuum chamber Non Conform

X-rays the 7-11-2011, DCUM 3259 b c Left side Side view (xray from corridor to QRL) b) Metallic noise due to loose spring when hitting vacuum chamber c) RF fingers falling due to broken spring Non Conform b Spring was broken between May and November 2011 Probably as a consequence of irradiation c

X-rays the 7-11-2011, DCUM 3259 Right side X-ray done also RF fingers and spring are Conform Photo to come

Other similar regions in LHC: Layout LSS2-LSS8 https://lhc-div-miwg.web.cern.ch/lhc-div-miwg/Main_Pages/new_frame%20miwg_icl.htm TCDD VGPB.120.4L2.X LSS2L : TCTVB TCDD VAB BPMSX D1L2 D1L2 VPIA.A151.4L2.X TCLIA LSS2R : D1R2 BPMSX VAB VCTCQ TCTVB TCLIA VGPB.120.4R2.X D1R2 VPIA.A170.4R2.X TCLIA VGPB.120.4L8.X LSS8L : TCLIA TCTVB VCTCF VAB BPMSX D1L8 D1L8 VPIA.A173.4L8.X VGPB.120.4R8.X LSS8R : D1R8 BPMSX VAB TCDDM TCTVB D1R8 VPIA.A147.4R8.X