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Magnetic Material Specification and
Procurement Strategy
Dawn Munson
1
Magnetic Material Specification
Material properties requirements are detailed in
LBNL Engineering Specification – 10620
• Magnetic Properties
• Mechanical Properties
• Magnetic Testing
• Packaging and Shipment
• Acceptance Criteria
This specification in conjunction with mechanical detail
drawings and the contract will dictate the magnets for the
LCLS-II undulators.
LCLS-II Magnetic Structure Review 7-6-11
2
Magnetic Material Specification
• The volume of magnetic material needed for both
undulator type blocks will likely require more than one
manufacturing lot
• To maintain continuity, it will be required that any one
shipment contain material from a single manufacturing lot
• At a minimum, a shipment is the quantity of blocks
required for a single HXU or SXU undulator
LCLS-II Magnetic Structure Review 7-6-11
3
Magnetic Material Specification
Magnet block coating
• Requirement is for Aluminum 0.010 mm to 0.020 mm thick
• Based upon ALS experience
• Proprietary coatings are likely to be proposed by potential
vendors. Acceptance of this coating will be dependent on
radiation exposure testing* and is compatible with Loctite
Hysol® EA9360™ epoxy adhesive
• Prototype blocks may use a coating other than aluminum
with the provision that testing is to be completed before
production begins on the full order
*Requirement applies to coatings with organic content, such as VACCOAT 10047
LCLS-II Magnetic Structure Review 7-6-11
4
Procurement Strategy
• Goal: to qualify two vendors for future procurement
of blocks for full scale prototypes and production
• Request for Proposal will solicit quotations for:
 Prototype HXU blocks – four standard magnet modules
and eight end modules
 Prototype SXU blocks - four standard magnet modules
and eight end modules
 Will include tooling as separate items
 Will include options for production quantities
• Initial procurement will be for HXU prototype blocks
• LBNL Buyer – Gina Goodman
LCLS-II Magnetic Structure Review 7-6-11
Slide 5
Procurement Strategy - Costs
• Based upon estimated cost of $8.2M/m3*
• HXU: ~$150/block
 34 periods per module, 2 blocks/period: $10.2K/module
 106 periods per device, 4 blocks/period: $63.6K/device
 32 devices: $2.04M total
• SXU: ~$650/block
 19 periods per module, 2 blocks/period: $24.7K/module
 61 periods per device, 4 blocks/period: $158.6K/device
 18 devices: $2.86M total
* Estimates are based on ALS historical material costs
LCLS-II Magnetic Structure Review 7-6-11
Slide 6
Procurement Strategy - Acceptance
• Acceptance Criteria
 Documents detailing the representative magnetization of
each material lot
 The data file from the block measurements, in ASCII
format
 Documentation detailing any surface void or chips larger
than 1 mm3
 Testing verification and documentation of any alternate
coating for the magnet blocks
 All tooling and materials as outlined in the purchase
contract
LCLS-II Magnetic Structure Review 7-6-11
Slide 7
Procurement Strategy - Tracking
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Material test reports
Block measurement files
Production photographs
LBNL and/or the selected assembly sub-contractor
will visually inspect all magnet blocks
• Random blocks will be selected and tested to verify
the data supplied by the manufacturer
LCLS-II Magnetic Structure Review 7-6-11
Slide 8
Procurement Strategy - Schedule
• Schedule:
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


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Release RFP end of July
Award end of August
Take delivery of prototype magnets ~February, 2012
Full scale prototype block purchase ~July, 2012
Production procurement award ~July, 2013
LCLS-II Magnetic Structure Review 7-6-11
Slide 9