Magnet mechanical design Nikolai Andreev LCLS-II Cryomodule Magnet - PowerPoint PPT Presentation

Magnet mechanical design Nikolai Andreev LCLS-II Cryomodule Magnet Final Design Review April 16, 2015

Outline • Introduction • Magnet mechanical design requirements • Magnet assembly design • Half magnet assembly • Coil design and fabrication • Summary LCLS-II DOE Review, April 7-9, 2015 2

Introduction • The magnet design based on the physics requirement documents: LCLSII- 4.1-PR-0146-R0, and LCLSII-4.1-PR-0081-R0. • The design based on the Splittable Conduction Cooled magnet concept. • Similar design for ILC magnet prototype was built and successfully tested in the conduction cooling mode to approve this concept. • Two short splittable quadrupole magnets very similar to LCLS-II magnets have been fabricated and tested. • This last design of short quad magnets is used as a base for the final design of the LCLS-II splittable magnet package. • All lessons to learn from previous splittable magnets design and fabrication are used to produce the engineering design, drawings and travelers. 3 LCLS-II DOE Review, April 7-9, 2015

Magnet Package Mechanical Requirements • The Magnet Package contains quadrupole and two built-in dipole correctors and mechanical design should provide required coils positioning. • The quadrupole integrated gradient is 0.064 T – 2.0 T and mechanical structure will support the coil magnetic forces. • Mechanical design must guaranty reproducibility of the alignment for the two splittable halves of the magnet during their assembly in the whole magnet. • External surface of the magnet package should have 8 conical holes for fiducials balls which will be used during magnetic measurements and later during magnet alignment inside the cryomodule. 4 LCLS-II DOE Review, April 7-9, 2015

Magnet assembly design LCLS-II DOE Review, April 7-9, 2015 5

Magnet Package Engineering Specifications Parameter Unit Value Integrated peak gradient at 10 GeV T 2.0 Integrated minimal gradient at 0.4 GeV T 0.064 Aperture mm 78 Magnet effective length mm 230 Peak gradient T/m 8.7 Quadrupole field non-linearity at 10 mm <0.01 Dipole trim coils integrated strength T-m 0.005 Magnetic center offset in the cryomodule less than mm 0.5 Liquid helium temperature K 2.2 The magnet should have a splittable, and conduction cooling (cryogen free) configuration as specified in the Cryomodule Magnet ESD LCLSII-4.5-ES-0355-R0. 6 LCLS-II DOE Review, April 7-9, 2015

Half magnet assembly LCLS-II DOE Review, April 7-9, 2015 7

Half magnet assembly picture LCLS-II DOE Review, April 7-9, 2015 8

Coil design and fabrication LCLS-II DOE Review, April 7-9, 2015 9

Coil’s fabrication pictures LCLS-II DOE Review, April 7-9, 2015 10

LCLS II Splittable Quadrupole Magnet Type "A" Coil Winding and Impregnation Traveler (SPQA) 464144 Rev. NONE. by Sherry Baketz 1.0 General Notes 2.0 Parts Kit List 3.0 Tooling Kit List 4.0 Broomfield 350 Winding Machine Set-Up 5.0 Coil Channel Preparation, Installation and Conductor Tensioner Stringing 6.0 Coil Winding 7.0 Pre-Impregnation Coil Inspection 8.0 Coil Winding Impregnation 9.0 Post Impregnation Coil Inspection 10.0 Production Complete LCLS-II DOE Review, April 7-9, 2015 11

Summary • The LCLS- II magnet final design drawing’s revision is done. • Prototype drawings have been released in the TeamCenter (F10009375). • Magnet parts have been procured and coil parts are delivered, coil winding ready to start. • Coil winding and impregnation traveler is ready for coil production. 12 LCLS-II Cryomodule Magnet FDR, April 16, 2015