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

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Outline

LCLS-II DOE Review, April 7-9, 2015

• Introduction
• Magnet mechanical design requirements
• Magnet assembly design
• Half magnet assembly
• Coil design and fabrication
• Summary

Introduction

3 LCLS-II DOE Review, April 7-9, 2015

• 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
• f 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.

Magnet Package Mechanical Requirements

4 LCLS-II DOE Review, April 7-9, 2015

• 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.

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Magnet assembly design

LCLS-II DOE Review, April 7-9, 2015

Magnet Package Engineering Specifications

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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.

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Half magnet assembly

LCLS-II DOE Review, April 7-9, 2015

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Half magnet assembly picture

LCLS-II DOE Review, April 7-9, 2015

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Coil design and fabrication

LCLS-II DOE Review, April 7-9, 2015

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Coil’s fabrication pictures

LCLS-II DOE Review, April 7-9, 2015

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LCLS II Splittable Quadrupole Magnet Type "A" Coil Winding and Impregnation Traveler (SPQA)

LCLS-II DOE Review, April 7-9, 2015

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

Summary

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• 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.