Author/Authors :
Barrière، نويسنده , , J.-Ch. and Blumenfeld، نويسنده , , H. and Bourdinaud، نويسنده , , M. and Cloué، نويسنده , , O. and Guyot، نويسنده , , C. and Molinié، نويسنده , , F. and Ponsot، نويسنده , , P. and Saudemont، نويسنده , , J.-C. and Schuller، نويسنده , , J.-P. and Schune، نويسنده , , Ph. and Sube، نويسنده , , S.، نويسنده ,
Abstract :
We have developed two different optical systems in order to position detectors with respect to a reference laser beam. The first system, a telescope, permits the absolute positioning of an element with respect to a reference laser beam. The resolution is of the order of 10 μm in translation and 50 μrad in rotation. It is highly transparent (∼90%) permitting several elements to be aligned. A calibration procedure has also been studied and is currently being tested in order to obtain an absolute alignment information. The second system is a highly transparent (95%) two-dimensional position sensor which allows the accurate positioning (below 20 μm) of several (up to 10) elements to which each sensor is attached, transversally to a laser beam used as a reference straight line. The present useful area of the first sensor is 20×20 mm2 and is 15×15 mm2 for the second. In both cases it can be further increased to meet the experimentʹs requirement.
