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LHCb Muon Frontend Board Connection and Shielding Dimensions

Learn about the connection of frontend board to the ground layer with screws and Alodine treatment for aluminum parts. Find out shielding dimensions ensuring proper contact.

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LHCb Muon Frontend Board Connection and Shielding Dimensions

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  1. Anode Wire Read Out (top) T.Schneider/LHCb Muon

  2. Cathode Pad Read Out (side) T.Schneider/LHCb Muon

  3. High Voltage (bottom) T.Schneider/LHCb Muon

  4. Frontend Board Connection The fronted board has one full ground layer. The connection to this ground layer happens on 4 large ground pads on the corner of the chamber T.Schneider/LHCb Muon

  5. Frontend Board Connection We use screws to fix the board to the Faraday cage. T.Schneider/LHCb Muon

  6. In order to assure good long term contact of the aluminum parts we will alodine them. ‘Alodining is the chemical application of a protective chromate conversion coating on aluminum’ This procedure is used by the ATLAS MDT system …. Frontend Board Connection T.Schneider/LHCb Muon

  7. Shielding Dimensions • Distance sensitive area <-> surface chip board in black( ) • Conservative number in green (depending on board/connector design) • +78 • (+68) • +90 (+80) Sensitive (+80) +90 • Area • +50 T.Schneider/LHCb Muon

  8. Low Voltage Regulator Board • 2 cards(*2LWR) per chamber in the upper corner of the shielding • Dimensions: • 63mm *(max)60mm T.Schneider/LHCb Muon

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