An illustration of Balders x-ray source and optics
From left to right: in-vacuum wiggler, FE mask, wall, low-E filters, alignment laser, CM, DCM, slit, fluorescent screen, FM, slit, fluorescent screen, sample

Source: in-vacuum wiggler

Total length2 m
Period50 mm
Minimum magnetic gap4.2 mm
Maximum deflection parameter (K max)9
Maximum effective field1.93 T
Critical energy11.5 keV
Total power at minimum gap and 500 mA ring current21 kW
Power in 400h×100v µrad2 (the Front End acceptance)
at minimum gap and 500 mA ring current		1.2 kW

Optics

Front End mask400h×100v µrad2
Low-E filters3 diamond filters of different thickness
Collimating mirror (CM)silicon, slot cooling with liquid Ga bath,
Si, Pt stripes, with bender
Double crystal monochromator (DCM)direct drive motor for Bragg axis,
LN2-cooled,
Si111 and Si311 pairs,
flat crystals, piezo on 2nd crystal
Focusing mirror (FM)Pt-coated and bare silica toroids of equal sagittal radii, with bender

The main beamline optical components were provided by FMB-Oxford (DCM, filters and diagnostics), Irelec (mirror mechanics) and SESO (mirror optics).

Page manager: Kajsa Sigfridsson Clauss January 31, 2023