DAPNIA-03-47 |
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An optical sensors for the alignment of the Atlas muon spectrometer |
J.-Ch.Barrière, O.Cloué, B.Duboué, V.Gautard, P.Graffin, C.Guyot, P.Perrin, P.Ponsot, Y.Reinert, J.-P.Schuller, Ph.Schune |
In the Atlas muon spectrometer the alignment system should control the spatial position of the muon chambers with an accuracy of 30 microns and 200 micro-radian for a range of ±5 mm and ±10 mrad. The alignment device described in this paper, called Praxial, fulfill these requirements |