The AU-AMO beam line on ASTRID2
Specifications of the AU-AMO beam line
A sketch of the AU-AMO beam line, which is located on an undulator source, is shown below:
A schematic diagram showing the optical layout of the AU-AMO beam line on ASTRID2.
The beamline consists of the following optical elements:
- Source from an undulator with a 53 mm period, 12 mm minimum gap and 43.5 full magnetic periods
- M1: A horizontally deflecting (4 deg.) toroidal mirror. In the horizontal plane the mirror focuses the beam on the exit slit and in the vertical plane it produces a parallel beam.
- M2: A vertically deflecting flat mirror which allows the grating angles to be adjusted for maximum diffraction efficiancy.
- Gra: Plane grating (vertically deflecting) with variable groove depth. Two interchangeable gratings HEG with 1200 lines/mm and a LEG with 200 lines/mm.
- M3: A horizontally deflecting (4 deg.) cylindrical mirror. The mirror focuses the beam sagittally (vertically) on the exit slit.
- EXS: Exit slit which defines the wavelength.
- MC1: Refocusing optics, MC1a and MC1b, interchangeable mirrors to focus the beam either in the crossed beam or rf-trap interaction regions of the X-ring.
Optical parameters for AU-AMO
| Optical Element | Distance from source | Major radius | Minor radius | Active area | Material |
| M1 | 7000 mm | 188.6 m | 0.489 m | 220 x 20 mm (L x W) | Au coated Silicon |
| M2 | 9416.44 mm | Plane | Plane | 320 x 40 mm (L x W) | Au coated silicon |
| Gra | 9704.38 mm | Plane | Plane | 100 x 40 mm (L x W) | Au coated ULE |
| M3 | 10504.38 mm | >10000 | 0.1885 m | 100 x 30 (L x W) | Au coated silicon |
| EXS | 13204.38 mm | - | - | - | - |
| MC1a | 16204.38 mm | 57.3 m | 0.0698 m | 125 x 30 (L x W) | Au coated Zerodur |
| MC1b | 16204.38 mm | 106.1 m | 0.1293 m | 125 x 30 (L x W) | Au coated Zerodur |
Last Modified 05 August 2019