commissioning of the cmcf 08id-1 beamline. light in the optical hutch september 2005 light at the...
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![Page 1: Commissioning of the CMCF 08ID-1 Beamline. Light in the Optical Hutch September 2005 Light at the entrance to the white beam slits (42 m). The rectangular](https://reader036.vdocuments.us/reader036/viewer/2022062518/5697bf701a28abf838c7da04/html5/thumbnails/1.jpg)
Commissioning of the CMCF 08ID-1 Beamline
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Light in the Optical HutchSeptember 2005
Light at the entrance to the white beam slits (42 m).The rectangular “glow” comes from the light produced by the in-vacuum small-gap undulator. The gap was at 8.0 mm and the ring current 10 mA. The screen is a CVD-deposited diamond foil doped with nitrogen atoms. Small round spot from a visible BM light.After the FE valve was opened!
November 2005
Monochromatic light, just downstream of the DCM (45 m).
18 mm
Gap = 12 mm (10 keV, 3rd harmonic)Current = 90mA
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First diffraction patter.March 18, 2006.E=9.31 keV, d=260 mm,exposure 3s.
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Wet lab
08ID-1
50 m 40 m 20 m
08B1-1
1.5 mrad sep.
DCM - 1st crystalcryocooled offsettingthe beam 0.5 m up
08ID-2Mini hutch
CMCF
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08ID-1 08B1-1
(Toroid)
08ID-2
(Toroid)
Spectral range (keV) 6.5 - 18.0 5.0 - 18.0 10 – 13?
Energy bandwidth (ΔE/E) Si(111) @12 keV
1.466 x 10-4 1.397 x 10-4 1.466 x 10-4
Flux on the sample @ 12keV photons/s
(from 7th harmonic for ID)
(from 5th harmonic for ID)~ 6.5 x 1012
~ 4.1 x 1012
~3.0 x 1011*
~ 6.0 x 1012
~ 3.7 x 1012
Focal Size @ 12 keV
(FWHM)
167μm (H) x
50 μm (V)
210 μm (H) x 200 μm (V)
~160μm (H) x
50 μm (V)
Flux density [ph/s/mm2] @ 12 keV
(from 7th harmonic for ID)
(from 5th harmonic for ID)
~4.5 x 1014
~2.8x 1014
~3.5 x 1012
~4.0 x 1014
~2.0x 1014
Beam crossfire at the sample (H x
V) @ 12 keV (FWHM)
0.9 mrad x 0.2 mrad
1.8 mrad x 0.2 mrad
< 1.0 mrad
When CLS at 200 mA
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Layout of the CMCF 08ID-1 Layout of the CMCF 08ID-1 BeamlineBeamline
Component Distance from Source
WBPM (White Beam Position Monitor) 40.6 m
WBS (White Beam Slits) 41.5 m
DCM (Double Crystal Monochromator) 43.5 m
VFM (Vertically Focusing Mirror) 46.0 m
Sample 49.9 m
1/Mx = 6.81/My = 11.8
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End-station
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Issues
• Not sufficient, not complete or wrong info from vendors (motors, gearboxes)
• Poor design of some components, no reference switch (crystal bender, yaw)
• Malfunction equipment equipment that cannot be tested without the light (SESO XBPM, BPM)
• Installation of optics without functional control system• Implementing physical units• Problems with saving the “final” motors’ parameters• Not implemented feedbacks from encoders• Noise from “high current” motors• Lack of man power to finish “control” of the end-station
before the first light (high current motor drivers)
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To Do• CCD holder (2)• Testing of shutter/omega synchronization• Data acquisition (collect tab)• MOSTAB (pitch of the second crystal)• SGU – DCM “calibration”• Stability of the beam (electron & X-ray BPM)• Fluorescence scan, Roentec MCA, Chooch, MAD• Save-restore• Automatic beamline alignment • Final GUI• Automounter• Remote access