BL18 In-Vacuum Undulator

SLAC National Accelerator Laboratory is operated by Stanford University for the Department of Energy. As a management and operating contractor, subcontracts awarded by the Laboratory are not Federal procurements, and are not directly subject to the Federal Acquisition Regulations in 48 CFR. Nonetheless, certain Federal laws, Executive Orders, and regulations may affect our DOE approved purchasing system, as required by statute, regulation, or contract terms and conditions.

SLAC National Accelerator Laboratory invites interested vendors to submit a proposal in accordance with the attached RFP preparation requirements for BL18 In-Vacuum Undulator. Requests for clarification must be returned by Friday, September 25, 2026**. **Your full proposal must be received no later than Friday, October 16, 2026, 5pm PDT.

SLAC has a requirement for a U.S. domestic end item source of the following:

Attached RFP_367893(RE)_BL18 IVU

NOTE: The following documents are attached in this solicitation.

• RFP_367893(RE)_BL18 IVU

• Must complete and return all documenation in the cover letter

AMENDMENT 01

Included is Amendment 01 to the BL18 In-Vacuum Undulator RFP to update the following:

(1) Revise Section F - Deliveries or Performance

• Extend the SLAC Requested Delivery Date from 18 Months ARO to 19 Months ARO

(2) Revise Section L - Instructions to Offerors

• Amend Factor 4, Schedule, to account for 19 Month ARO delivery schedule and consideration of alternative

proposed schedules

(3) Revise Section L - Attachment 01

• Amend Matrix to account for changes to Factor 4

(4) Revise Section M - Evaluation of Offers

• Amend Factor 4, Schedule, to account for 19 Month ARO delivery schedule and consideration of alternative

proposed schedules

(5) Incorporate Technical Responses to Request for Clarifications dated 9/15/2026

A signed Amendment of Solicitation is required with submittal of the proposal package. This is no change to the proposal delivery date of Friday, October 16, 2026, 5pm PDT.

**NOTE: **Below is a list of updated documents:

(1) Section F- Deliveries or Performance - Amendment 01 dated 9/15/2026

(2) Section L - Instructions to Offerors - Amendment 01 dated 9/15/2026

(3) Section L - Attachment 01 - Qualifications Matrix - Amendment 01 dated 9/15/2026

(4) Section M - Evaluation of Offers - Amendment 01 dated 9/15/2026

(5) Responses to Request for Clarifications dated 9/15/2026

AMENDMENT 02

Included is Amendment 02 to the BL18 In-Vacuum Undulator RFP to update the following:

(1) Revise Section L - Instructions to Offerors

• Extend the proposal due date from October 16, 2026 to October 30, 2026

(2) Incorporate Technical Responses to Request for Clarifications dated 9/29/2026

A signed Amendment of Solicitation is required with submittal of the proposal package. This is a change to the proposal delivery date from Friday, October 16, 2026, 5pm PDT to Friday, October 30, 2026, 5pm PDT

NOTE: Below is a list of updated documents:

(1) Section L - Instructions to Offerors - Amendment 02 dated 9/29/2026

(2) Responses to Request for Clarifications dated 9/29/2026

AMENDMENT 03

Included is Amendment 03 to the BL18 In-Vacuum Undulator RFP to update the following:

(1) Incorporate Technical Responses to Request for Clarifications dated 10/6/2026

A signed Amendment of Solicitation is required with submittal of the proposal package. There is a no change to the proposal delivery date of Friday, October 30, 2026, 5pm PDT

NOTE: Below is a list of updated documents:

(1) Responses to Request for Clarifications dated 10/6/2026

Please provide required documentation to the attention of Ryan Enos.