delta project overview
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DELTA Project Overview
Heinz-Dieter Nuhn – LCLS Undulator Group Leader
Presented atLCLS-II Physics Meeting
Tuesday, October 11, 2011
Helical Undulator R&D (DELTA)
Existing Girder (U33)
Support Support
Driver Driver
Controls &
Software
Vacuum chamber
Helical undulator to enhance taper and to provide circularly polarized (soft) x-raysCornell’s Delta undulator is a novel, compact design that fits straightforwardly onto existing LCLS girderPlan to build and test a 3.2-m Delta @ U33
Cornel Delta undulator (A. Temnykh)
Variable Phase Undulators
Four independent quadrants of permanent magnets move longitudinally at fixed gap.By sliding the arrays it is possible to control the K value over full range and to control the polarization of the radiation emitted
Soft X-Ray Polarization ControlPage 3
4 MovablePM Quadrants
DELTA Project Synopsis
Conceptual Design is in preparation
Gene Kraft the Project Engineer
Sasha Temnykh will provide technical support
Rough cost estimate: $1.5M
Rough schedule estimate: 2 years
DELTA is Part of LCLS Short to Mid Term Expansions
25 Regular LCLS Und. 8 SHABs
A: Present
4 SHABs15 Regular LCLS Und. 13 Regular LCLS UndHXRSSB: Scheduled for Jan 2012
DELTA
7 Reg UndHXRSSE: Add SXR Self Seeding
HXRSSF: Expand (after 2015)
DELTA
15 Regular LCLS Und.HXRSSC: Option after Jan 2013 to support stronger
tapering 4 Regular + 13 Weaker Und
4 Regular + 12 Weaker Und
4 Regular + 17 Weaker Und
15 Regular LCLS Und.HXRSSD: Proposed R&D (after 2013) DELTA
4 Regular + 12 Weaker Und
7 Reg Und
SXRSS
7 Reg Und 7 Reg UndSXRSS
Higher Brightness at 8 keV
Increased Intensity
Polarization Control
Higher SXR Brightness
120 GW FEL
Sash Temnikh will now talk about the DELTA undulator =>
End of Presentation
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