Beamline Layout and Specification

Beamline 5.2 Optical Layout

Figure 3: Schematic of the BL5.2 Beamline Configuration.

Optical Layout: The beam transport system consists of three main sections:

Front End: Located immediately after the storage ring, this section contains safety shutters and fast valves to isolate the beamline vacuum from the storage ring.
Optics Section:
- Heat Absorber (ABS): Protects downstream optical components from the high heat load of the white X-ray beam.
- X-ray Beam Position Monitor (XBPM): Utilized to monitor the vertical position and intensity of the incident beam.
- Double Crystal Monochromator (DCM): The core optical component used to select specific monochromatic X-ray energy. It operates with changeable crystals (InSb(111), Ge(220) or Si(111)) to cover the full energy range.

Energy Range

1,810 eV – 13,000 eV

Photon Flux

10⁸ – 10¹⁰ photons/sec/100 mA

Energy Resolution

2 × 10⁻⁴

X-ray Source

1.44 T Bending Magnet

Beam energy

1.2 GeV

Beam current

70-150 mA

Monochromator

Fixed-exit Double Crystal Monochromator

Monochromatic

Crystals

InSb(111)

Ge(220)

Si(111)