beamline 11.0.2 mono residual steering effects

Residual horizontal deflection during scanning

-60

-50

-40

-30

-20

-10

00 100 200 300 400 500 600 700

photon energy (eV)

horiz

onta

l stre

erin

g re

quire

d (m

icro

rad)

Mismatch between mirror and grating angle

-120

-100

-80

-60

-40

-20

0

20

40

0 1 2 3 4 5 6

mirror angle (degrees)

corr

ectio

n to

gra

ting

(m

icro

radi

ans)

exit slit toroid, with horizontal steering servo-loop to slits monochromator, with mirror

and grating scanning

Beamline 11.0.2 Monoresidual steering effects

Generic Mono Modifications

-Chamber ports; *Reduce the number of flanges from 17 to 12 and view-ports from 9 to 3.

-Level; *Lower mounting surface.

-Linear stage; *Change 5TPI ball-screw to 50TPI standard screw in order to stop possible movement during power failure.


-Hard stop; *Add external hard stop to

linear stages.

-Bellows cover; *Add detent for firm

attachment.


-Cam Adjuster; *Increase outside diameter.*Add spanner holes.*Change reference flat.*Supply spanner wrench.

-Invar Bracket;*Increase gusset thickness.*Add cross brace.


-Optic Adjusters; *Reduce body height to remove potential binding.*Change spanner nut to standard nut.*Increase spring maximum load to 25 lbs.

-Coolant tubes;*Reduce wall thickness for increased flexibility.

-Bellows;*Reduce outside diameter for better flange screw clearance.


ZOOM OUT


-Bellows, sine-arm;*Reduce outside diameter, increase length and moved toward flange to increase screw clearance and assembly access.

-Bellows, pre-mirror;*Reduce outside diameter to increase screw clearance.

-Coolant tubes;*Reduce wall thickness for increased flexibility.

-Mask, pre-mirror;*Remove large radius.

-Optic adjuster;*Counter-bore cradle for increased travel.


-Pre-mirror angular Travel;*Increase range by 2 degrees.

-Range: 0-6 degrees.

-Center: 3 degrees

-Grating angular travel;*increase range by 1.0 degree and move center by 0.5 degrees.

-Range: 0-10 degrees.

-Center: 5 degrees

( Zero degrees was added for alignment purposes )

beamline 11.0.2 mono residual steering effects

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