03/12/2003 1T.Schneider/LHCb Muon

Muon Interface Meeting

Anode Wire Read Out (top)

03/12/2003 2T.Schneider/LHCb Muon

Muon Interface Meeting

Cathode Pad Read Out (side)

03/12/2003 3T.Schneider/LHCb Muon

Muon Interface Meeting

High Voltage (bottom)

03/12/2003 4T.Schneider/LHCb Muon

Muon Interface MeetingFrontend 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

03/12/2003 5T.Schneider/LHCb Muon

Muon Interface MeetingFrontend Board Connection

We use screws to fix the board to the Faraday cage.

03/12/2003 6T.Schneider/LHCb Muon

Muon Interface MeetingFrontend Board Connection

• 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 ….

03/12/2003 7T.Schneider/LHCb Muon

Muon Interface Meeting

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

03/12/2003 8T.Schneider/LHCb Muon

Muon Interface Meeting

Low Voltage Regulator Board

2 cards(*2LWR) per chamber in the upper corner of the shielding

Dimensions:63mm

*(max)60mm