Reference Energy Filters

<BR><BR>
There are three axis with 5 positions each carrying foils of
different elements which can be used as energy reference. This
filters are placed in between two diodes which recovers the
incident and transmitted intensity. The diode works by means of
the scattering from a kapton foil. The diode intensities are given
by the I0 and I1 counters, and the kapton foil positions are controlled
by a pneumatic actuator (name kap2).
<BR><BR>
Element Absorption_Edge(eV)
<BR><BR>
Mn 6539; Cr 5989; V 5465; Ti 4966; Zn 9659
<BR><BR>
Cu 8979; Co 7709; Fe 7112; Ag 25514; Mo 20000;
<BR><BR>
Pb 15861; Au 14353


<BR><BR>
To operate the filters run the Attenuator2 application in the
Beamline Control Applications in the workstation.
In the application program are written
which kind of element corresponds to each position.<BR>

<br><img border="0" src="../images/referencefilters.jpg" >