U125-2_SGM Undulator SGM horizontal polarisation
U125-2_SGM is a multi-purpose VUV beamline. The polarization is fixed horizontal. Higher undulator orders are suppressed. Please note the interlock-requirements given below.
|Temperature range||Pressure Range|
|nmTransmission NEXAFS||room temperature||<10^-3 mbar|
|Energy range||29 - 138 eV|
|Energy resolution||16000 (500 l/mm grating)|
|Flux||1E13 ph/s/300 mA|
|Divergence horizontal||4.5 mrad|
|Divergence vertical||0.6 mrad|
|Focus size (hor. x vert.)||120 µm (hor), 60 µm (vert)|
|Distance Focus/last valve||ca. 1475 mm|
|Height Focus/floor level||1420 mm|
Interlock requirements: At this beamline the vacuum interlock is implemented via a Pfeiffer Ion gauge, which connects directly to the beamline electronics. The gauge can be provided by HZB or any user-provided Pfeiffer gauge can be connected.The simplest way to fit this is to mount a CF40 "T" to the beam port and to connect the beamline gauge there. The distance between the last flange and the focus shortens thereby by 125 mm. Please contact the beamline team before you install your end station.