Changes for page Parameters of the beamline cameras

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• Page properties (2 modified, 0 added, 0 removed)

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1		-XWiki.sndueste
	1	+XWiki.sendels

Content

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775	775	** The Vertical calib factor can be determined directly
776	776	** The hor calib factor hat to take into account that the beam on the screen is larger due to the projection. So the calibration factor is larger for the horizontal direction in contrast to the vertical. this gives the angle of the screen in respect to the camera Tan = projection / beam. for the beam one can use the vertical size ( for round objects / beams). This gives the calibration for objects on the screen. However the Beam is projected on the screen and is larrger than the beam itself. and as second step one has to include the projection of the beam onto the screen with the factor Cos(screen angle)
777	777	** for our 30 deg screns this is: calib(for Beamprofiles) = calib(with objects on the screen) / Cos(screen angle) = calib(with objects on the screen) * 1.15
778		-** for illustration:[[~[~[image:url:http://hasfweb.desy.de/pub/Setup/BeamlineCameraParameters/Clipboard01.jpg~|~|alt="Clipboard01.jpg" width="640" height="400"~]~]>>attach:Clipboard01blcamera.jpg]]
	778	+** for illustration:
	779	+** [[image:attach:Clipboard01blcamera.jpg||height="400"]]
779	779
780	780	\\
781	781
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798	798	\\
799	799
800	800	* Beamline_screens.jpg:
801		-[[~[~[image:url:http://hasfweb.desy.de/pub/Setup/BeamlineCameraParameters/Beamline_screens.jpg~|~|alt="Beamline_screens.jpg" width="480" height="360"~]~]>>attach:Beamline_screens.jpg]]
	802	+* [[image:attach:Beamline_screens.jpg||height="400"]]
	803	+\\
802	802
803	803	There is also an older Version with only 3 holes. there the diameter is also 2 mm and the distance between the holes is 23 mm