AMOR 2 Theta

The movement off the two theta is quite complex at the reflectometer AMOR. The angle of the detector itself is expressed by translations along the optical bench and in height. Then the angle of the detector needs to be adjusted as well. Moreover some diaphragms along the way from the sample to the detector need adjustment as well. In polarizing mode the analyzer position must be corrected as well. In order to do this a virtual motor has been created which takes care of this movement. As such this object has no real user interface except the usual printing of the position when the name of the virtual motor is typed. However, in order to do his work this virtual motor needs a lot of parameters. These are described below. It is assumed that the virtual motors name is s2t. There is another virtual motor called aom2t which is the analyzer two theta angle.

Parameters needed by the AMOR virtual two theta motor

detectord

distance of the detector from the sample.

d4d

distance of diaphragm 4 from the sample.

d5d

distance of diaphragm 5 from the sample.

sampleh

An additive factor describing the height of the sample, i.e. the height of the table itself.

detectorh

The base height of the detector.

d4h

The base height of diaphragm 4.

d5h

The base height of diaphragm 5.

interrupt

The interrupt to issue if this motor fails to operate.

anah

Height of the analyzer.

anad

distance analyser - sample.

anaflag

Flag if analyzer movement should be calculated or not. -1 if not, positive if yes.

c2h

height constant for single detector 2.

aomconst

constant part of analyzer omega angle.

s2t parname

s2t parname newval

s2t detectord
155.
s2t detectord 300.