Reference¶
Here you can find links to 2-BM technical reference material like drawings, hardware manuals etc.
Source¶
Parameters |
Value |
Units |
Storage Ring Electron Energy |
7.0 |
GeV |
Storage Ring Electron Current |
100.0 |
mA |
Bend Radius |
38.96 |
m |
Peak Magnetic Field |
0.6 |
Tesla |
Critical X-ray Energy |
19.5 |
keV |
Horizontal Source Size |
198 |
μm FWHM |
Vertical Source Size |
78 |
μm FWHM |
Vertical Source Divergence at 11 keV |
157 |
μ rad FWHM |
Flux at 19.5 keV |
1.12x10^13 |
/sec/0.1%BW/mrad(H) |
Steering correction¶
To adjust the beam position Vertical Angle or Vertical Position reported in the BMP control screen:
use the APS steering request web page.
Warning
The APS steering request web page shows the green request a steering button only on the beamline authorized computer.
Filters¶
Mirror¶
The pre-APS-U mirror was a flat mirror with two coatings:
Coating |
Nominal angle (mrad) |
Cr |
2.657 |
Pt |
2.657 |
Mirror reference documents:
The mirror installed at 2-BM (APS-M1) has been recoated and put back in service post APS-U. The disassembly process is documented by these photos.
In a second phase the original mirror installed at 2-BM (APS-M1) will be replaced with a new mirror (APS-U-M1). Below we capture all associated docuemnts:
DMM Multi-layer¶
2-BM has a double crystal multi-layer monochromator (DMM) to change energy. The beamline x-ray energy change is managed by the energy cli python library.
Login into user2bmb@arcturus then:
[user2bmb@arcturus,42,~]$ bash
[user2bmb@arcturus,42,~]$ energy set --mode Mono --energy-value 20
for help:
energy -h
More detailed instructions are here the energy cli
Technical infomation about the DMM are available at the links below:
Station |
Descriptiom |
Images |
Info |
2-BM-A |
DMM |
|
Beam-Sample Distance¶
The distance between the table and the scintillator center (current setup) at 2-BM-B is 415 mm
Slits Drawings¶
The slits at 2-BM are standard APS L3-20. Technical as-built drawings are available here.