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ILC BSY (2006b). total length ≈ 650 m. σ x = 29 μ m η X = 20 mm Δ E = 2% Δ x = 400 μ m ≈ 14 σ x. wire scanners. total length ≈ 470 m. to IRTs. dump. MPS β -collimators. skew correction. 2D emittance measurement. MPS E -collimator. Ф = 4 mm. Ф = 96,54,12 mm. - PowerPoint PPT Presentation
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April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 1
ILC BSY (2006b)
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 2
total length ≈ 650 m
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 3
wire scanners
σx = 29 μmηX = 20 mmΔE = 2%Δx = 400 μm ≈ 14σx
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 4
total length ≈ 470 m
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 5
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 6
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 7
dump
to IRTs
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 8
MPSβ-collimators
skewcorrection
2D emittancemeasurement
Ф = 96,54,12 mm
Ф = 4 mm
MPSE-collimator
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 9
Brett Parker’s BMP dipoles (20)
vacuum chamberФ=15 mm OD
0
20
0.25% (500 GeV beam)x
x x
mm
12.5 mm
total length = 114.6 m
energy BPM
window
laserwiredetector (ε)
MPS energy collimator
ΔE/E = ±10%trajectories
Diagnostic Chicane
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 10
vacuum chamberФ=15 mm
laserwire photonsgo through here
Brett’s BMP magnet has a wide (±28 mm) clear horizontal aperture … put in a small (but reasonable) vacuum chamber for the beam and use the reamining clear aperture to pass laserwire photons
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 11
kickerssepta
Ф = 8 cm
sextupole
Tesla “Type B”quadrupoles
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 12
TESLA “Type B” quadrupole• Lcore = 1.5 m• bore radius = 10 mm• max pole-tip field = 7.9 kG
40 mm
Tesla Kickers
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 13
rasterkickers
dump
no vertical bending
April 4, 2006 Y. Nosochkov and M. Woodley (SLAC) 14
• chicane dipoles (20)– Brett Parker’s “BMP” dipoles– L = 2.8 m, horizontal full aperture ≈ 56 mm, vertical full aperture ≈ 34 mm– θ ≈ 100 μrad: B = 0.06 T @ 1 TeV cm– total chicane SR emittance growth < 0.25% @ 1 TeV cm (DIMAD)
• fast extraction kickers (25)– in-vacuum stripline devices– L = 2 m, horizontal full aperture = 40 mm, vertical aperture < 40 (> 20) mm– θ ≈ 16 μrad: B = 0.0133 T @ 1 TeV cm– 100 ns rise-time, ? kV/cm, 225 MW total pulser power, 5 thyratron pulsers, 1 cable per kicker (≈ 20 kV)
• for “tuneup” mode, assume large gap DC dipoles wrapped around (some of) the fast extraction kickers
• septa (5)– current-sheet devices, 10 mm thick blade– L = 2 m, horizontal full aperture = 30 mm– θ ≈ 0.6 &1.2 mrad: B = 0.5 T (3), 1.0 T (2) @ 1 TeV cm
• rastering kickers (10 horizontal, 10 vertical)– L = 0.8 m, full aperture = 80 mm– θ ≈ 26 μrad: B = 0.054 T @ 1 TeV cm– 3 cm sweep radius (1.4 μm × 1.4 μm beam size at dump window) … factor of ≈ 25 reduction in dE– reference TESLA Report 2001-05 (Maslov)
Some Magnet Details
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