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spreader OPTICS. Y. Nosochkov 02-26-2014. Summary. The LCLS2sc beam will be switched between the SXR, HXR and dump lines by means of a fast vertical RF deflector (kicker) and a 3-hole horizontal Lambertson septum magnet. - PowerPoint PPT Presentation
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SPREADER OPTICSY. Nosochkov
02-26-2014
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Summary02/26/2014
• The LCLS2sc beam will be switched between the SXR, HXR and dump lines by means of a fast vertical RF deflector (kicker) and a 3-hole horizontal Lambertson septum magnet.
• The spreader bend magnets generate dispersion and R56.These are canceled by adding quadrupoles to the spreader optics. The quadrupoles can be also used for R56 tuning.
• SXR spreader is a 4-bend horizontal chicane with quadrupoles.
• HXR spreader is a 4-bend horizontal and vertical dogleg with quadrupoles. The two outer bends are horizontal, and the two inner bends are rolled for providing both X and Y bending.
• Dump line is a vertical and horizontal dogleg with quadrupoles. It also provides optics for energy measurement.
• Vertical orbit and dispersion generated by the vertical deflector (kicker) are cancelled by 2 vertical dipole correctors placed in each of the SXR and HXR lines downstream of the septum.
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SXR spreader line02/26/2014
SXR quads – blueLCLS-1 quads - blackBends – redSeptum – redDeflector – magentaCorrectors – cyanD10 dump – black
R56 (mm) I5
SXR 0 1.5e-8
X-plane
Y-plane
LCLS2
SXR
SXRLCLS2
LCLS1
LCLS1
septum
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HXR spreader line02/26/2014
HXR quads – greenLCLS-1 quads - blackBends – redSeptum – redDeflector – magentaCorrectors – cyanD10 dump – black
R56 (mm) I5
HXR 0 9.9e-10
X-plane
Y-plane
LCLS2
HXR
HXR
LCLS2
LCLS1
LCLS1
septum
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Spreader dump line02/26/2014
Dump quads – blackLCLS-1 quads - blackBends – redSeptum – redDeflector – magentaD10 dump – black
X-plane
Y-plane
LCLS2D10
D10
LCLS2
LCLS1
LCLS1
Deflector and septumare off
Last X-bend deflectsbeam away fromexisting D10 hole
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Complete layout02/26/2014
SXR quads – blueHXR quads – greenDump quads – blackLCLS-1 quads – blackBends – redSeptum – redDeflector – magentaCorrectors – cyanD10 dump – black
X-plane
Y-plane
LCLS2
SXR
HXR
SXR
HXR
LCLS2
LCLS1
LCLS1
D10
D10
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kickerseptum
SXR spreader optics02/26/2014
R56 = 0tunable ±4 mm
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kickerseptum
HXR spreader optics02/26/2014
Two inner bends are rolledR56 = 0tunable ±1 mm
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BY1kickerseptum
D10dump
BY2 BX
Spreader dump line optics02/26/2014
bx = 0.7 m,hx = -0.17 m
for E-diagnostic
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Modified LCLS-1 optics in BSY02/26/2014
• LCLS-1 BSY optics is changed to FODO using 6 existing quads for a lower b-function• Quads are placed outside of the divergent and biconcave chambers, so the chambers
may not need to be removed
divergentchamber
biconcavechamber
HXR
muonwall
D10
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spreader
Complete SXR02/26/2014
One extra bypass quad upstream and one downstream of the spreader for better match
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Complete HXR02/26/2014
spreader
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Magnets in the SXR spreader at 4 GeV02/26/2014
Magnet Name L (m) Half-bore (mm)
Angle (mrad)
BL (kGm)
K1 (m-2) GL (kG) Roll (deg)
Bend plane
RFKICK KIKSP 1.000 10.0 -0.750 -0.100 0 0 0 Y
SEPT LAMSP 1.000 5.0 11.077 1.478 0 0 0 X
CORR BCSP1S 0.500 12.7 3.141 0.419 0 0 0 Y
CORR BCSP2S 0.500 12.7 -2.391 -0.319 0 0 0 Y
QUAD QSP1S 0.320 16.0 0 0 0.613000 26.173 0 -
QUAD QSP2S 0.320 16.0 0 0 -0.514534 -21.969 0 -
BEND BXSP1S 1.000 12.7 -11.077 -1.478 0 0 0 X
QUAD QSP3S 0.320 16.0 0 0 0.613369 26.189 0 -
QUAD QSP4S 0.320 16.0 0 0 -0.447119 -19.090 0 -
QUAD QSP5S 0.320 16.0 0 0 0.159961 6.830 0 -
QUAD QSP6S 0.320 16.0 0 0 -0.447119 -19.090 0 -
QUAD QSP7S 0.320 16.0 0 0 0.613369 26.189 0 -
BEND BXSP2S 1.000 12.7 -11.077 -1.478 0 0 0 X
QUAD QSP8S 0.320 16.0 0 0 -0.514802 -21.980 0 -
QUAD QSP9S 0.320 16.0 0 0 0.613156 26.179 0 -
BEND BXSP3S 1.000 12.7 11.077 1.478 0 0 0 X
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Magnets in the HXR spreader at 4 GeV02/26/2014
Magnet Name L (m) Half-bore (mm)
Angle (mrad)
BL (kGm) K1 (m-2) GL (kG) Roll (deg)
Bend plane
RFKICK KIKSP 1.000 10.0 0.750 0.100 0 0 0 Y
SEPT LAMSP 1.000 5.0 -5.538 -0.739 0 0 0 X
CORR BCSP1H 0.500 12.7 -3.765 -0.502 0 0 0 Y
CORR BCSP2H 0.500 12.7 3.015 0.402 0 0 0 Y
QUAD QSP1H 0.320 16.0 0 0 0.364571 15.566 0 -
QUAD QSP2H 0.320 16.0 0 0 -0.310674 -13.265 0 -
BEND BRSP1H 1.000 12.7 6.490 0.866 0 0 31.424 X/Y
QUAD QSP3H 0.320 16.0 0 0 0.443271 18.926 0 -
QUAD QSP4H 0.320 16.0 0 0 -0.355418 -15.175 0 -
QUAD QSP5H 0.320 16.0 0 0 0.152074 6.493 0 -
QUAD QSP6H 0.320 16.0 0 0 -0.176980 -7.556 0 -
QUAD QSP7H 0.320 16.0 0 0 0.212016 9.052 0 -
QUAD QSP8H 0.320 16.0 0 0 -0.176980 -7.556 0 -
QUAD QSP9H 0.320 16.0 0 0 0.152074 6.493 0 -
QUAD QSP10H 0.320 16.0 0 0 -0.358695 -15.315 0 -
QUAD QSP11H 0.320 16.0 0 0 0.455972 19.468 0 -
BEND BRSP2H 1.000 12.7 -6.490 -0.866 0 0 31.424 X/Y
QUAD QSP12H 0.320 16.0 0 0 -0.266243 -11.368 0 -
QUAD QSP13H 0.320 16.0 0 0 0.350271 14.955 0 -
BEND BXSP1H 1.000 12.7 5.538 0.739 0 0 0 X
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Magnets in the spreader dump line at 4 GeV02/26/2014
Magnet Name L (m) Half-bore (mm)
Angle (mrad)
BL (kGm)
K1 (m-2) GL (kG) Roll (deg)
Bend plane
RFKICK KIKSP 1.000 10.0 0 0 0 0 0 -
SEPT LAMSP 1.000 5.0 0 0 0 0 0 -
QUAD QSP1D 0.430 50.0 0 0 0.141519 8.119 0 -
QUAD QSP2D 0.430 50.0 0 0 -0.144917 -8.314 0 -
BEND BYSP1D 1.000 12.7 8.777 1.171 0 0 0 Y
BEND BYSP2D 1.000 12.7 -8.777 -1.171 0 0 0 Y
QUAD QSP3D 0.430 50.0 0 0 -0.162140 -9.302 0 -
QUAD QSP4D 0.430 50.0 0 0 0.242099 13.890 0 -
BEND BXSPD 1.000 12.7 -9.014 -1.203 0 0 0 X
