Photon Stopper Holders

Statement of Work (SOW) / Performance Work Statement (PWS)

This Statement of Work (SOW) outlines the subcontract requirements for the manufacture of the LCLS-II-HE Photon Stopper Holder subassembly. These stoppers are required for the LCLS-II-HE Hard X-ray beamline to stop/absorb the FEL beam and are part of the Personal Protection System (PPS).

• Manufacture LCLS-II-HE Photon Stopper Holders per SLAC drawing DSG-000086549.

• Fabricate and send all items defined as Deliverables to SLAC.

• Fabricate to meet LCLS Vacuum Level 1 requirements (SLAC-I-030-714-001-04) and conform to SLAC specification FP-202-631-14.

• Key Deliverables: Twelve (12) units of SLAC drawing number DSG-000086549, HLDR, HE FEED THRU.

• OPTION 1: SLAC may exercise the option to manufacture additional yield units of DSG-000086549.

• Work Exclusions: SLAC will procure Silicon Carbide tombstone and braze alloy(s); SLAC will perform brazing steps.

• Subcontractor to procure/manufacture components per DSG-000086549, excluding items noted in Section 5.3.

• Subcontractor to furnish DSG-000086553 subcomponents to SLAC for brazing.

• Subcontractor to perform assembly and welding steps per DSG-000086551 and DSG-000086549.

• Subcontractor to deliver completed assemblies to SLAC for final acceptance testing.

• Factory Acceptance Testing: Subcontractor to perform hydrostatic test on DSG-000086583. SLAC shall witness acceptance tests at Subcontractor's site.

• Final Acceptance Testing: SLAC shall perform 100% mechanical and vacuum testing at SLAC.

• Key Deliverables timelines include subcomponent machining (3 weeks after commencement), brazing (7 weeks after receipt of subcomponents), manufacturing integration/assembly/welding (4 weeks after receipt of brazement subassemblies), and acceptance (3 weeks after manufacturing completion).

• As-Built drawing package due 30 days after production completion.

• No items to be shipped without prior written authorization from SLAC.

• Technical Exchange Meeting within one week of award.

• Nonconformance Reporting, Analysis and Corrective Action system required.

• Subcontractor must adhere to SLAC Subcontract Monitoring requirements, including documentation submission.

• Extensive Quality Control Requirements detailed in Appendix A, including QA Program, Design/Change Control, Personnel Qualification, Traceability, Certificates of Conformance, Calibration, Material Test Reports, Analysis, Proof Test, Procedures, Inspection/Test Reports, Special Processes, Engineering Drawings, Manuals/Instructions, First Article Inspection, Source Inspection, Factory Acceptance Test, Receipt Inspection, Final Acceptance Test, and Pre-Ship Review.

• SLAC has the right of access to Subcontractor's facility for inspection and/or resident representation.

Solicitation / RFP / RFQ

This document, Section L - Instructions to Offerors (ITO) for Firm Fixed Price Subcontract, provides guidance for preparing proposals for the LCLSII-HE Mirror Benders, RFP 364022(GN) opportunity. It outlines the format, content, and submission requirements for proposals.

Proposals must demonstrate the Offeror's ability to meet technical requirements, have a Quality Assurance program, show relevant past performance, and include a successful completion and delivery schedule.

This is a Firm Fixed Price Subcontract. Proposals must be valid for ninety (90) days from the proposal due date. The offer shall also state that items will remain valid for one year from the initial award.

• Proposal Due Date: June 4, 2026, at 5 PM PST.
• Submission Method: Email to giangn@slac.stanford.edu.
• Proposal Structure: Proposals must be submitted in two volumes: Volume I - Technical Proposal (50-page maximum) and Volume II - Business Proposal. These volumes must be separate PDF documents.
• Evaluation: Proposals will be evaluated based on key evaluation factors, including technical ability, quality assurance, past performance, and major milestones/delivery date for the technical proposal, and price, financial information, and acceptance of terms for the business proposal.
• Cost/Price: Must be fair and reasonable. Unrealistically low or high costs may lead to proposal elimination.

Offerors must be registered with the System for Award Management (SAM). E-Verify as required by FAR 52.222-54 applies.

• Point of Contact: Giang Ngo (giangn@slac.stanford.edu) is the sole point of contact.
• Clarifications: Requests for clarification must be submitted in writing by May 21, 2026, using the provided form (Attachment 1).
• Exceptions: Any exceptions to SLAC's terms and conditions must be identified in the proposal and may be cause for rejection.
• SLAC reserves the right to award without discussions but may conduct them if deemed in its best interest.
• SLAC will not reimburse Offerors for taxes as a separate line item.

Form / Attachment / Pricing Sheet

This document, titled "Section F - Deliveries or Performance," outlines the schedule for the manufacture and delivery of Stopper Holders. It serves as a sample for the draft contract, providing offerors with a template to propose their delivery timelines.

• Item No.: Lists the basic requirement and option items (001-005).
• Description: Details the item to be manufactured and delivered as a "Stopper Holder (DGS-00086549)," referencing specific SLAC drawings (LCLS-II-HE Stopper Holder, LCLSII-HE-1.4-SW-1121-R2 and DSG-000086549 Drawing).
• Target Delivery: Specifies "ARO+ 14 Weeks" (After Receipt of Order) as the target delivery timeframe for all listed items.
• Proposed Delivery (ARO +Months): This column is left blank, indicating that offerors are expected to propose their specific delivery timelines.

This document is crucial for bidders as it defines the specific item to be delivered (Stopper Holder) and the required delivery timeframe. Bidders must use this schedule to propose their delivery dates, which will be a key factor in contract evaluation and award.

Form / Attachment / Pricing Sheet

This document, Section G - General Terms and Conditions, incorporates by reference the "Fixed Price Commercial Supply and Services General Terms and Conditions (Rev. August 2023)". It serves to outline the standard contractual terms and conditions that will govern the opportunity.

• The primary element is the incorporation of the "Fixed Price Commercial Supply and Services General Terms and Conditions (Rev. August 2023)".

Bidders should review the referenced "Fixed Price Commercial Supply and Services General Terms and Conditions (Rev. August 2023)" to understand the contractual obligations, legal requirements, and standard clauses that will apply to any resulting contract. This document is crucial for assessing the overall risk and compliance aspects of the opportunity.

Form / Attachment / Pricing Sheet

This document, "GENERAL TERMS AND CONDITIONS For Fixed Price Commercial Supplies and Services," outlines the standard contractual terms and conditions that will govern subcontracts for commercial supplies and services. It serves as a foundational document for potential bidders to understand the legal and operational framework of any resulting agreement.

• Definitions: Clarifies key terms used throughout the document (e.g., Buyer, Commercial product, Government, Seller).
• Scope and Order of Precedence: Defines the scope of the subcontract and the order in which various documents (Subcontract, SOW, attachments, Seller proposal) will take precedence in case of conflicts.
• Seller Acceptance: Outlines how a seller accepts the subcontract (acknowledgement, commencement of performance, or acceptance of payment).
• Services: Details the seller's responsibilities regarding the quality, accuracy, and coordination of services, including management, reporting, and consultation.
• Key Personnel: Specifies requirements for a designated "Seller Representative" and other key personnel.
• Title and Responsibility: Addresses the transfer of title for materials and supplies and the seller's responsibility for goods until delivery.
• Instructions for Packaging: Mandates adequate packaging to prevent damage and the use of environmentally sustainable materials.
• Approval of Technical Data: Outlines the process and implications of buyer approval for technical data.
• Travel: Details reimbursement policies and procedures for travel expenses, including foreign travel requirements.
• Invoices and Payments: Specifies payment terms, invoice requirements, and submission procedures.
• Extras: States that payment for extras requires written authorization.
• Tax and Buyer Exemption: Addresses applicable taxes and the buyer's exemption status.
• Inspection and Acceptance: Defines the buyer's rights regarding inspection, testing, and acceptance of supplies and services, including procedures for rejection and correction.
• Quality and Warranty: Sets standards for the quality of items and materials, including requirements for new, genuine, and non-counterfeit parts, and outlines warranty provisions.
• Limitation of Liability, Indemnity, Confidentiality, Material Breach, Assignment, Independent Contractor: Covers various legal and operational aspects of the contractual relationship.
• Permits, Licenses, and Applicable Laws: Requires seller compliance with all relevant laws and regulations.
• Disputes and Governing Law: Outlines the process for dispute resolution and the governing law.
• Export Control: Addresses requirements related to U.S. export controls.
• Contracts for Materials, Supplies, Articles, and Equipment: Incorporates relevant clauses for specific types of procurements.
• Time is of the Essence: Emphasizes the importance of timely performance.
• Excusable Delays: Defines conditions under which delays may be excused.
• Publicity: Restricts the use of Buyer's name and trademarks.
• Clauses Incorporated by Reference: Lists numerous Federal Acquisition Regulation (FAR) and Department of Energy Acquisition Regulation (DEAR) clauses that are incorporated into the subcontract, with specific conditions for their applicability based on subcontract value and type.

This document is critical for any bidder as it establishes the fundamental terms and conditions that will govern the subcontract. Bidders must carefully review these terms to understand their obligations, rights, and the overall contractual framework. Key areas of focus for bidders include:

• Scope of Work and Deliverables: How services or supplies are defined and what is expected.
• Payment Terms: When and how payments will be made.
• Inspection and Acceptance: The process by which deliverables will be evaluated and accepted.
• Warranties and Liability: The seller's responsibilities for defects and limitations on liability.
• Compliance Requirements: Adherence to laws, regulations, and specific FAR/DEAR clauses.
• Reporting and Communication: Expectations for progress reporting and communication with the Buyer.
• Key Personnel Requirements: Any specific staffing or personnel qualifications needed.

Understanding these terms is essential for accurately pricing proposals, assessing risks, and ensuring compliance if awarded the subcontract.

Solicitation / RFP / RFQ

This document outlines the evaluation factors for award for a subcontract. SLAC will select the best overall offer based on an integrated assessment of technical and business factors, with technical factors being more important than business factors. The award will be made to the responsible Offeror whose proposal conforms to the solicitation's requirements and represents the best value to SLAC.

This action requires technical, personnel, and managerial capability, capacity, experience, and management excellence. Proposals will be submitted in two volumes: a Technical Proposal (Volume I) and a Business Proposal (Volume II).

• Evaluation Method: A qualitative assessment based on Evaluation Factors will be performed. Technical differences will be noted to determine price/technical tradeoffs.

• Technical Proposal Evaluation (Volume I):

  • Factor 1: Ability to meet technical requirements: Assesses the supplier's ability to manufacture deliverables and meet specifications, including autogenous welds and integration of Ultra High Vacuum (UHV) components. EXCEEDS, MEETS, and DOES NOT MEET ratings apply.
  • Factor 2: Quality Assurance: Evaluates the Offeror's QA program. EXCEEDS (accredited system), MEETS (documented internal system), and DOES NOT MEET ratings apply.
  • Factor 3: Past Performance: Evaluates documentation demonstrating relevant past performance. EXCEEDS (exceptional relevance/reliability), MEETS (at least three comparable projects), and DOES NOT MEET ratings apply.
  • Factor 4: Major Milestones and Delivery Date: Evaluates the proposed schedule for completion and delivery. EXCEEDS (before Sept 10, 2026), MEET (by Oct 1, 2026), and DOES NOT MEET ratings apply.

• Business Proposal Evaluation (Volume II):

  • Factor 1: Price Proposal: Evaluated for completeness, realism (avoiding unrealistically high/low prices), and reasonableness.
  • Factor 2: Financial: Evaluates financial statements and stability, including Dun & Bradstreet SER score.
  • Factor 3: Contractual Documents and Terms and Conditions Acceptance and/or Exceptions: Evaluates acceptance of SLAC's terms, completeness of forms (RFP Section A, Section K), and certifications.

• Basis for Award: Best Value Trade Off (BVTO).

• Period of Performance: Implied by delivery dates (e.g., by October 1, 2026).

Not explicitly detailed in this section, but general requirements for responsible Offerors apply.

• SLAC may award without discussions but reserves the right to conduct them.
• Proposals evaluated as unrealistic may be rejected.
• SLAC will consider the "correction potential" of deficiencies.
• Debriefings may be requested within 3 days of notification of non-award.

Form / Attachment / Pricing Sheet

This document, Section K - Representations and Certifications, outlines the required certifications and representations that offerors must complete as part of their proposal submission.

• SLAC National Accelerator Laboratory- REPRESENTATIONS AND CERTIFICATIONS SUPPLEMENT (August 2022): To be completed by all offerors from within the U.S.
• SLAC National Accelerator Laboratory- INTERNATIONAL REPRESENTATIONS AND CERTIFICATIONS (May 2023): To be completed by all offerors outside of the U.S.
• Buy American Act Certification: To be completed by all offerors.

Offerors must carefully review and complete the applicable representations and certifications as instructed. Failure to provide these may impact the evaluation or award of the contract.

Form / Attachment / Pricing Sheet

This document, titled "INTERNATIONAL REPRESENTATIONS AND CERTIFICATIONS," is a form that offerors must complete and return with their proposal if their performance is outside the United States and they have or will not recruit employees in the United States for the subcontract. It is required for the Prime Contract DE-AC02-76SF00515 with the U.S. Department of Energy for the management and operation of SLAC National Accelerator Laboratory.

• Type of Organization: Offerors must specify their organizational structure (e.g., Individual, Sole Proprietorship, Partnership, Corporation, etc.).
• Certification Regarding Debarment, Suspension, Proposed Debarment, and Other Responsibility Matters: Offerors must certify that they and their principals are not debarred, suspended, or proposed for debarment by any Federal agency, and have not been convicted of or had civil judgments against them for certain offenses. They must also certify that no contracts have been terminated for default.
• Payments to Influence Certain Federal Transactions: Applicable if the offer exceeds $150,000. Offerors must certify that no Federal appropriated funds have been paid or will be paid to influence Federal transactions. If non-Federal funds have been used for influencing, an OMB standard form LLL must be submitted.
• Anti-Kickback: Applicable if the offer exceeds $150,000. Offerors must certify that they have not provided, attempted to provide, offered to provide, solicited, accepted, or attempted to accept any kickback.
• Employee-Vendor Relationship Certification: Offerors must disclose if any employee or former employee of Stanford University, or their near relative, owns, controls, or has a significant financial interest in the offeror's organization. An affirmative response may require evaluation for a conflict of interest.
• Signature: A designated authorized representative must sign the form, certifying the accuracy of the statements. The certifications remain in effect for one year from the date signed.

Completion and submission of this form are mandatory for offerors whose performance is outside the U.S. and who do not recruit U.S. employees for the subcontract. Failure to complete and return this form may impact the eligibility of the offer. Bidders must carefully review each section and provide accurate certifications to avoid potential penalties or rejection of their offer.

Form / Attachment / Pricing Sheet

This document, Section H - Special Terms and Conditions, outlines specific contractual terms and conditions applicable to the subcontract. It details requirements related to key personnel, subcontract administration, and options for contract modification.

• Special Article A: Key Personnel: Identifies essential personnel for the subcontract. Requires the Subcontractor to notify SLAC's contractual representative in writing 30 days prior to changing Key Personnel, including justification. No replacement is allowed without SLAC's written consent.
• Special Article B: Subcontract Administration: Designates Giang Ngo as SLAC's contractual representative, the sole authorized person for changes to subcontract requirements, modifications, or the Statement of Work/Schedule. All notices and requests must be directed to Giang Ngo at the provided address and email. SLAC's Technical Representative (TBD) will monitor work and clarify technical requirements but cannot make changes.
• Special Article C: Option for Increased Quantity-Separately Price Line Item(s): Allows SLAC to require delivery of Option Items at stated quantities and prices. The Procurement Specialist may exercise this option via subcontract modification. A non-binding notice of intent may be provided up to 90 days prior to actual exercise.
• Special Article D: Option to Extend the Term of the Subcontract: Grants SLAC the unilateral right to extend the subcontract term under specified conditions. SLAC will issue a Notice of Intent to Exercise the Option 30 days prior and a Modification to Extend Services no later than 10 days prior to the option period start.

This document is crucial for understanding the administrative and contractual framework of the subcontract. Bidders should pay close attention to the requirements for key personnel changes, the designated point of contact for all contractual matters, and the potential for contract modifications related to increased quantities or extended terms. This information is vital for proposal preparation and understanding the ongoing management of the subcontract.

Form / Attachment / Pricing Sheet

This document, titled "Representations and Certifications Supplement," is a form that potential offerors must complete and return with their proposal. It supplements the annual Representations and Certifications available electronically via the System for Award Management (SAM).

• Business Information: Requires Offeror's name, address, "Doing Business As" (DBA), Unique Entity Identifier (UEI), DUNS number, and Tax Identification Number (TIN).
• SAM Electronic Representation and Certification Applications: Offeror certifies that SAM information is current, accurate, and complete.
• Employment Verification Eligibility (E-Verify): For proposals exceeding $3,500, offerors must indicate their E-Verify status and commitment to enrollment if awarded.
• Employee-Vendor Relationship Certification: Requires certification regarding any significant financial interest an employee or former employee of Stanford University, or their near relative, may have in the offeror's organization.
• Toxic Chemical Release Reporting: Applicable if the offer exceeds $100,000. Requires certification regarding compliance with EPCRA and PPA reporting requirements for facilities used in performance.
• Anti-Kickback: Applicable if the offer exceeds $100,000. Requires certification that no kickbacks have been provided or solicited.
• Export Control: Requires representation regarding whether furnished items are "Trigger List Items" (Nuclear Suppliers Group), USML (ITAR) designated articles/services, or Dual Use Items (500 or 600 series).
• Signature: A designated representative must sign, certifying the accuracy of the statements and acknowledging that they remain in effect for one year.

Completion and submission of this form are mandatory for proposals exceeding certain thresholds. It requires bidders to provide critical business, compliance, and certification information. Failure to complete this form accurately may impact the evaluation and award of the contract.

Form / Attachment / Pricing Sheet

This document is a "Buy American Act Certification" form required for Solicitation Number 364022(GN). It is used by bidders/offerors to certify compliance with the Buy American Act provisions regarding domestic commercial products.

• Certification of Domestic Product: Bidders must certify whether each end product qualifies as a U.S. domestic commercial product by checking "Yes" or "No".
• Excluded End Products: Section A allows for the listing of excluded end products in accordance with FAR Part 25.104.
• Domestic Source Certification: Section B requires certification that all end products are domestic source end products, with no components of unknown origin outside the United States.
• Foreign Content Representation: Bidders must estimate the percentage of foreign content for items or services being procured, expressed as a percentage of the total award price (within +/- 5% accuracy).
• Signature Block: Section C requires the offeror's signature, printed name, title, company name, and date to make the representations and certifications part of their quotation.

This form is critical for bidders to complete and submit as part of their quotation to demonstrate compliance with the Buy American Act. Failure to properly complete this certification may impact the evaluation and award of the contract.

Form / Attachment / Pricing Sheet

This document is Section A of a Subcontract Award Form, which outlines the terms and conditions of a subcontract. It serves as the primary agreement between the issuing entity (SLAC) and the seller.

• Solicitation Number: SLAC_364022(GN)
• Offers Due By: June 4, 2026, 5:00pm PST
• Subcontract Administrator: Giang Ngo
• Issued By: The Board of Trustees of the Leland Stanford, Jr. University (SLAC)
• Submit Invoices To: SLAC National Accelerator Laboratory, Accounts Payable
• Project Site: SLAC National Accelerator Laboratory
• Table of Contents: Lists included sections such as Subcontract Award Form, Supplies/Services/Costs, Specifications/SOW, Delivery, Inspections, Deliveries/Performance, General Terms, Special Terms, Subcontract Clauses, Attachments, Representations/Certifications, Instructions to Offerors, and Evaluation Factors.
• Brief Description of Supplies/Services: Subcontractor shall manufacture and deliver twelve (12) and four (4) option photon stopper holders for the LCLSII-HE Project.
• Total Amount of Subcontract: To be detailed in Section B.
• Negotiated Agreement: Outlines the subcontractor's agreement to furnish and deliver items or perform work as identified, governed by the subcontract award, solicitation, and incorporated clauses.
• Award: Details the acceptance of the offer by SLAC.

This form is critical for potential bidders as it contains the solicitation number, offer due date and time, contact information for inquiries and invoice submission, and a summary of the items to be procured. It also lists the various sections and attachments that will govern the subcontract, providing a roadmap for understanding the full scope of the agreement.

Form / Attachment / Pricing Sheet

This document, Section D - Delivery, Shipping, Packing, outlines the specific requirements and procedures for the delivery, shipping, and packaging of goods related to the opportunity. It provides essential information for vendors to ensure compliant and efficient shipment.

• Domestic Shipping: Shipments within the USA will be FOB Destination.
• International Shipping: Shipments outside the USA will be CIP SLAC, Menlo Park, and Duty Unpaid.
• Customs Coordination: Vendors are instructed to coordinate international shipments with SLAC's designated customs agent, Green Worldwide Shipping (USA), Inc. Contact details (phone, email, website) are provided for both inbound and export information.
• Marking for Shipment: Exterior shipping containers must be marked with the addressee (SLAC National Accelerator Laboratory B33, ATTN: TBD, 2575 Sand Hill Road, Menlo Park, CA 94025), shipper information, and the SLAC subcontract or purchase order number.

This section is critical for bidders to understand the logistical requirements and associated costs for delivering goods or materials. It specifies the terms of delivery (FOB Destination, CIP SLAC), the process for international shipments including customs clearance, and the precise marking instructions for all containers. Failure to comply with these shipping and marking requirements could lead to delays or non-acceptance of shipments.

Form / Attachment / Pricing Sheet

This document outlines the inspection and acceptance procedures for items related to the "LCLS-II-HE Stopper Holder" project. It details where and by whom inspections and acceptances will occur.

• A table lists five item numbers (001-005), including a basic requirement and four optional items. For each item, it specifies:
  • INSPECT AT: SUBCONTRACTOR/SLAC
  • INSPECT BY: SUBCONTRACTOR
  • ACCEPT AT: SLAC
  • ACCEPT BY: SLAC
• Note a) clarifies that SLAC inspection and written acceptance are required for all items (001-005).
• Note b) specifies that final inspection and acceptance occur after delivery at SLAC, referencing the Statement of Work "LCLS-II-HE Stopper Holder" (Document No. LCLSII-HE-1.4-SW-1121-R2 dated 4/28/2026) and Drawing DSG-000086549.
• Note c) states that inspection and acceptance are in accordance with "Section 13 – Inspection and Acceptance," SLAC National Accelerator Laboratory Terms and Conditions for Fixed Price Commercial Supplies and Services dated August 2023.

This document is crucial for bidders as it defines the quality assurance and acceptance process. Vendors must understand these requirements to ensure their deliverables meet SLAC's standards and to plan for the inspection and acceptance stages, which are critical for final payment and contract completion.

Form / Attachment / Pricing Sheet

This document, Section B - Supplies or Services and Prices/Costs, outlines the pricing structure for the procurement of Stopper Holders. It details the basic requirement and optional line items, referencing the Statement of Work (Section C) for task specifics.

• Basic Requirement (Item 001): Manufacture and delivery of 12 Stopper Holders, based on specific drawings (DGS-00086549, LCLS-II-HE Stopper Holder, LCLSII-HE-1.4-SW-1121-R2, DSG-000086549).
• Option Lines (Items 002-005): Includes up to four additional Stopper Holders, each with a quantity of 1. These options may be exercised by SLAC within 12 months of the Basic Requirement Award and are subject to written authorization.
• Pricing Fields: Includes columns for Unit Price and Total Price for both the basic requirement and option lines.
• Administrative Information: Fields for Unique Entity ID, ECCN, Harmonized Tariff Schedule (HTS Code), DUNS Number, Payment Terms, and Discounts are included.

This document is crucial for bidders to understand the cost structure of the opportunity. It specifies the quantities for the basic requirement and potential additional quantities under option lines, requiring bidders to provide unit and total pricing. Bidders must ensure their pricing reflects the specifications provided in the referenced drawings and Statement of Work.

Form / Attachment / Pricing Sheet

This document is an Offeror's Request for Clarifications form associated with Request for Proposal (RFP) No: SLAC_364022(GN). It is designed for potential bidders to submit questions regarding the RFP to the government.

• Offeror's Name: Field for the bidder to enter their company name.
• Date: Field for the date the request is submitted.
• Item #: Sequential numbering for each question.
• Date Submitted: Field to record the submission date for each question.
• RFP Document Reference: Field to cite the specific section or page of the RFP the question pertains to.
• Question: The primary field for the bidder to articulate their clarification request.
• Response Date: Field for the government to indicate when a response is expected.
• Response: Field for the government to provide their answer.
• RFP Actions: Field to note any actions taken by the government as a result of the clarification.

This form is crucial for bidders to seek necessary clarifications on the RFP requirements, specifications, or any other aspect of the solicitation before the proposal due date. Properly utilizing this form ensures that bidders can submit well-informed proposals. The due date for the RFP is May 21, 2026, at 5pm PST.

Statement of Work (SOW) / Performance Work Statement (PWS)

This document outlines the Statement of Work (SOW) for the LCLS-II-HE Stopper Holder, identified by Document No. LCLSII-HE-1.4-SW-1121-R2, dated 4/28/2026.

• The primary deliverable is the LCLS-II-HE Stopper Holder.
• A key drawing associated with this SOW is DSG-000086549, titled "HE FDTHRU PLUG TOP".

The following sub-drawings are also incorporated by reference, with their respective revision numbers:

• DSG-000034792 (Revision No.00)
• DSG-000008549 (Revision No.01)
• DSG-000086551 (Revision No.01)
• DSG-000086553 (Revision No.02)
• DSG-000086554 (Revision No.01)
• DSG-000086583 (Revision No.01)
• DSG-000086584 (Revision No.01)
• DSG-000086586 (Revision No.01)
• DSG-000090865 (Revision No.01)
• DSG-000090956 (Revision No.01)
• DSG-000090957 (Revision No.01)
• DSG-000090959 (Revision No.00)
• PF-375-105-27 (Revision No.01)

Not specified in this document.

Not specified in this document.

Solicitation / RFP / RFQ

This document is a Request for Proposal (RFP) for the procurement of LCLS-II-HE Photon Stopper Holders. SLAC is seeking firm fixed price proposals.

• The procurement will be performed in accordance with specified requirements documents, including Section C (Specifications/SOW), Section G (SLAC General Terms & Conditions), Section H (Special Terms and Conditions), and Section L (Instructions to Offerors).

• Technical and business proposals must be submitted in separate volumes. Pricing information should not be included in the technical proposal.

• The contract type is firm fixed price.

• Proposals must be received no later than Thursday, June 4, 2026, 5:00 PM Pacific.

• Proposals must be valid for 90 days after submission.

• Submissions can be provided by electronic files in PDF or any digital format.

• SLAC intends to award without discussions but reserves the right to conduct discussions if deemed necessary.

• Offerors must be registered with the System for Award Management (SAM).

• E-Verify as required by FAR 52.222-54, “Employment Eligibility Verification (July 2012)" applies.

• Specific required documents for submission include:

  • Section A - Subcontract Award Form and acknowledgement of amendments.
  • Section B - Supplies or Services and Prices.
  • Section H - Key Personnel Clause.
  • Section K - Representations and Certifications and Buy American Act Certification.
  • Section L - Attachment 1 “Offeror's Request for Clarifications” (due May 21, 2026).
  • Section L - Attachment 2 - "Offeror's Technical and Business Checklist."

• All questions and clarifications regarding the proposal should be directed in writing to Giang Ngo at giangn@slac.stanford.edu.

• Giang Ngo is the SOLE point of contact. Unauthorized communication may lead to disqualification.