RE3/1 & RE4/1 Parameter Space Services

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Presentation transcript:

RE3/1 & RE4/1 Parameter Space Services Ian Crotty 12 Feb 2014

CMS Parameter drawing

RE4/1 & RE3/1 Extending to Extra High Eta = 2.4 or 2.5 As planned high Eta up to 2.1. Extending to Extra High Eta = 2.4 or 2.5

Boundries on Extra High Eta Alignment lines RE4/1 RE3/1 ETA=2.1 Neutron Shielding on Vertical faces of yoke Cylindrical Neutron Shielding

Dimensions as per our Parameter Book Geometrical Layout and Mechanical details of CMS End Cap RPCs (Version:November, 2002) B D Ri Ro Station Ri Ro A B C D Thickness Z Position rpc Z of cu-strips RE2/1 1960 3241 1301 1251 799 1281 36 7865-7902 7883 –7920* RE2/2 3299 4986 1693 979 684 1687 RE2/3 5001 6955 1961 1323 981 1954 RE3/1 2435 819 966 806 9775-9738 9757-9720* RE3/2 RE3/3 RE4/1 2655 595 1044 586 10676-10639 10654-10621* RE4/2 RE4/3

The easy solution A flat wall YE4 to mount to However there are no services, Gas, Rack space, Mini Cable Chains etc available on YE4. Taking services there from YE3 would require disconnects or new Mini cable chains. The former is not CMS policy.

Mounting RE4/1 Outer radius mounting posts are hidden behind RE4SM Alignment system has gone giving space ~60mm in Z Inner radius mounts M24 every 20deg Require a technically smart solution to fix the outer radius

Access to Periphery Lead cables and pipes over the top of the RPCs, OR Under them where the space was for the alignment system .

RE3/1

RE3/1 High Eta & Extra High Eta RE3/1 Eta = 2.4 RE3/1 Eta=2.1

Mounting RE3/1 M12 Mounting Holes for 20deg Chambers

Access to Periphery Over the top of the RPCs Under the RE3/2 & RE3/3

Services Gas rack(s) Cooling, capacity of YE3 Manifold Rack (LV , LBC Cables (HV, LV Signal dcs Access to Periphery (Green Structure) Space in Main & Mini Cable Chains

Gas rack space available on Near of YE3 suitable for both RE3/1 & 4/1 ?

Conclusion The mounting of RE4/1 is tricky The rack space for both RE4/1 & RE3/1 on the same yoke (YE3) will be difficult Exact volumes for High ets & Extra High eta to be established with Integration 904 Iteration of chamber design and boundary conditions in P5 This doc and others are visible at; http://project-cms-rpc-endcap.web.cern.ch/project-cms-rpc-endcap/rpc/UpscopeHighEta/Parameters/HighEtaParaSpaceRPCsIanFeb2014.pptx

Supplementary slides RE2/1

RE2/1 and its Cooling

X Section of CSC-RPC interface

Alignment path