Commissioning of the CMCF 08ID-1 Beamline

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

First diffraction patter.March 18, 2006.E=9.31 keV, d=260 mm,exposure 3s.

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

  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

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

End-station

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)

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