1. Laser DCS meeting, Utrecht, 13 June 2005Børge Svane Nielsen, NBI1 TPC laser controls adjustable mirrors Laser Controls, Power, Cooling DCS: 1/ Laser controls 2/ Mirror adjustments 3/ Beam monitoring cameras 4/ Interlocks Laser hut

2. Laser DCS meeting, Utrecht, 13 June 2005Børge Svane Nielsen, NBI2 Status of software at NBI Laser controls and steering: Program written for Linux/C++ (see talk by G. Renault). Comment: beam tracker needs continuous loop and real-time user interface. Cameras: Very likely to change strategy from USB Webcam to digital video + frame grabber. Synchronisation and multiplexing of cameras by STAR developed board. Mirror controls: Still based on NewFocus system with driver: LabVIEW or DLL. Comment: ’camera’ and ’mirror’ programs need to be tightly connected and have common real-time user interface: automatic beam steering and/or manual steering

3. Laser DCS meeting, Utrecht, 13 June 2005Børge Svane Nielsen, NBI3 STAR synchronisation board Functions:  Synchronise 2 lasers to LHC clock / BCO (40 MHz divided down on board to ~10 Hz)  Synchronize any number of cameras to same clock  Multiplex any of 32 cameras to 1 (or 2) frame grabbers  Delivers up to 8 TTL output signals for external equipment (mirror flippers, shutters etc) Communication: 11 bit I/O -- ’driver’ exists for PC parallel port

4. Laser DCS meeting, Utrecht, 13 June 2005Børge Svane Nielsen, NBI4 STAR synchronisation board

5. Laser DCS meeting, Utrecht, 13 June 2005Børge Svane Nielsen, NBI5 STAR laser user interface