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Richard Soluk University of Alberta Slide 2 The LHCb VELO Region R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 2 Slide 3 Deployed Detectors LT-NTDs Each Low Threshold Nuclear Track Detector consists of multiple layers of CR39 and polycarbonate in a stack with guide dowels to ensure alignment. Stacks are sealed in aluminized mylar bags until ready for etching R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 3 Slide 4 LT-NTD Mounting Stacks (typically 6) are placed in aluminum trays and mounted on rails attached to concrete walls around the VELO area Bar codes used to identify each stack First 3 prototype trays installed November 2009 R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 4 Slide 5 Current LT-NTD Array R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 5 Slide 6 Deployed Detectors - MMT The Magnetic Monopole Trapper consists of a mass of aluminum A magnetically charged particle that ranges out in the aluminum will be detectable by a magnetometer Prototype consisted of 1 diameter aluminum rods located in front of the VELO below the beampipe R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 6 Slide 7 MMT Prototype R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 7 Slide 8 Deployed Detectors - Timepix Only active element 256x256 pixel solid state detector 14x14mm active area R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 8 Slide 9 Timepix R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 9 One in forward direction near beamline other transverse to the IP Slide 10 New MMT Location Located under the VELO within the VELO support stand framework R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 10 Slide 11 New MMT Design Square aluminum bars Bars held in flat trays similar to those used for the LT-NTD stacks 2.54 x 2.54 x 19cm bars 12 rows of 3 bars per row Approximately 12kg/tray 6 trays per layer 8 vertical layers Mass of bars 576kg R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 11 Slide 12 MMT Supports MMT not supported off the VELO frame but directly off the floor using aluminum blocks Floor grid placed on top of blocks to form base for MMT R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 12 Slide 13 LT-NTD Upgrade All plastic was removed at the end of run 1 Will be replaced with new CR39/Makrofol stacks New CR39 vendor identified since old production line no longer exists R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 13 Slide 14 New LT-NTD Locations Top of VELO cover Closest possible location to IP Avoids having to install on ceiling using scaffold 30 stacks Underneath VELO on top of the new MMT Further from IP due to pumps 12 stacks R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 14 Slide 15 New Detector: HCC-NTD Thin low mass detectors for highly ionizing particles 3 layers of 150m Makrofol inside a 25m aluminum foil bag 0.19% of a radiation length thickness Can be taped to surfaces using kapton tape R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 15 Slide 16 HCC-NTD on the Trigger Tracker Propose placing a HCC- NTD on the downstream surface of the TT Adds 0.5% to the LHCb material budget to that point R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 16 Inside the LHCb acceptance but after the VELO, RICH1 and TT measurements Slide 17 Additional Timepix Cables will be installed now for 5 additional timepix Routing is same as current timepix cables and does not conflict with LHCb cable runs R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 17 Slide 18 Installation Schedule R. Soluk --- University of Alberta --- MoEDAL Collaboration Meeting --- CERN June 19-21 18