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HERA. DORIS with 6 access doors. PETRA with 11 access doors. HERA with 14 access doors. PETRA. DORIS. Each door must be manageable by one member of the “Night –Shift”. likewise “HERA east”. likewise “HERA north”. Video multiplexer. likewise “HERA B”. likewise “HERA west right”.

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SERIAL

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  1. HERA DORIS with 6 access doors. PETRA with 11 access doors. HERA with 14 access doors PETRA DORIS Each door must be manageable by one member of the “Night –Shift” likewise “HERA east” likewise “HERA north” Video multiplexer likewise “HERA B” likewise “HERA west right” Contacts to check the door Camera to observe the door View of access HERA west left Keys in a box to disable accelerator Card reader Concentrator to connect several card reader to a serial line Phone line for accelerater Status Status Status Status Status Controlled access to restricted areas of DESY accelerators. A. Labudda The problem likewise “DORIS” likewise “PETRA” “HERA” likewise “HERA south” HERA west Matrix video multiplexer Videoline “HERA west left” The equipment Operators console Door module makes informationavailable for SEDAC 60 V line LAN SEDAC Server PC RS 422 from card reader to concentrator RS 232 from concentrator to PC Video camera Video multiplexers Server PC with 5 server applications 60 V SEDAC Console PC Each of the server application sends its set of status messages to console Emergency off / interlock brocken 1 - Select the videosignal to be displayed key switches 60 V SEDAC The implementation SEDAC Box controler Access door 2a - Open the key box 2b - Select door and prepare it for usereverse a and b if leaving the accelerator SERIAL concentrator 3 - Eject card after acceptingcurrently not in use Door selection 4 - Register a person as “in access” or “leaving access”currently not in use The real button of access Card reader

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