LCLS 2 Sa Lattice Utilization of LCLS Undulator

LCLS 2 Sa Lattice Utilization of LCLS Undulator Hall Y. Nosochkov, S. Boo, T. Raubenheimer, M. Woodley 08 -16 -2013

Building LCLS 2 Sa lattice q. Install SXR in existing LCLS hall q Use existing design of LCLS 2 lattice from injector to bypass. q Use LTU design of LCLS with the following modifications: • add a doublet after muon wall for a better match to the upstream bypass • move V-bend downstream of the dogleg to put the LCLS 2 Sa and LCLS undulators into the same plane • replace dogleg triplets and 4 H-bends by 90 o FODO cells and 2 H-bends • position the 2 nd dogleg H-bend sufficiently far inside the “head house” for reduced interference with walking path • set the H-bend angle for 2. 5 m separation between LCLS 2 Sa and LCLS undulators • position the LCLS 2 Sa TDUND about 5 m downstream of LCLS TDUND q Use undulator cell design of LCLS 2 SXR: • set the end of LCLS 2 Sa undulator at the same Z-position with the end of LCLS undulator • adjust the number of undulator extension cells to 13 to fit between the TDUND and the undulator cells • use 4 quadrupoles in extension cells for focusing q Use dump line design of LCLS 1/7/2022 2

3 -D view of LCLS and LCLS 2 Sa in linac system 1/7/2022 3

Plan and elevation views in linac system Plan LCLS 2 Sa Bypass Elevation 1/7/2022 4

LCLS 2 Sa lattice Dogleg BC 1 BC 2 Bypass Dump Undulator Diagnostic LTU 1/7/2022 5

LCLS vs LCLS 2 Sa: LTU dogleg and V-bend LCLS V-bend 4 H-bends (0. 5 o/H-bend) 2 V-bends R 56 = 0. 135 mm I 5 = 4. 3 e-10 Dogleg triplets LCLS 2 Sa Dogleg FODO 1/7/2022 V-bend 2 H-bends (1. 067 o/H-bend) 2 V-bends R 56 = 0. 305 mm I 5 = 2. 2 e-9 6

LCLS vs LCLS 2 Sa: muon wall to dump LCLS V-bend Dogleg triplets Diagnostic Undulator LCLS 2 Sa Dogleg FODO V-bend 1/7/2022 Diagnostic Extension Undulator 7

LCLS 2 Sa extension and undulator cells 13 extension cells 1/7/2022 15 undulator cells 8

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BX 31 1/7/2022 10

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BX 35 TDKICK 1/7/2022 13

BX 36 1/7/2022 14