4-ID-C - Sector 4
Soft X-ray Polarization Dependent Scattering and Spectroscopy |
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| Overview |
| 4-ID-C is the soft x-ray (500 eV -> 3000 eV) branch of sector
4. This branch has a unique helical undulator as a source capable of providing both
circular and linear polarization on the sample. |
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| Responsible Scientists |
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| Scientific Interests |
- Magnetic spectroscopies using polarized light.
- Imaging and micro-spectroscopy with photoelectron microscopy (PEEM) .
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| Source Characteristics |
| APS Helical Undulator |
| Device Length |
2.47 m |
| Undulator Period |
12.8 cm |
| First Harmonic Range |
0.5 to 3.0 keV |
| Total Power |
800 Watts |
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| Optical Components |
| Component |
Distance from Source |
Comment |
| Mirror (M1C) |
29.5 m |
1.1 deg. plane (Pt,Rh,Si) |
| Mirror (M2C) |
30.6 m |
1.1 deg. sphere, hor. focussing (Pt,Rh,Si) |
| Mirror (M3C) |
41.4 m |
1.00 deg. sphere, vert. focussing |
| Monochromator |
50.0 m |
spherical grating |
| Experiment station |
58.5 m |
UHV sample chamber |
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| Beamline Configuration |
The first optics enclosure (FOE, 4-ID-A) houses the optics used to seperate the C- and D- branch x-ray
beams. |
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| Beamline Control |
| The beamline is run by Sun workstations (UNIX/Solaris) and VME-based electronics. The VME-based equipment
is controlled by EPICS. There are several software clients that use EPICS, including MEDM, Python, and SPEC. Other computers,
such as PCs, are used to run specialized pieces of equipment (e.g., the CCD camera). |
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| Experimental End Stations |
- X-ray magnetic dichroism chamber
- X-ray photo-emission microscope (X-PEEM)
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| Ancillary Equipment |
- CCD camera;
- High resolution flourescence detector
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| Milestones |
| Milestone |
Date |
Comment |
| First beam in 4-ID-C |
May, 2001 |
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