Specification - HB2A-EQ-20-0001 - Copy.pdf

HB2A-EQ-20-0001

MIDAS Radial Collimator Equipment Specification

HB-2A MIDAS Radial Collimator Equipment Specification

Instrument Improvement Project Equipment Specification

Author(s)

Elias Pulliam Amy Jones

Stuart Calder Malcolm Cochran Danielle Yahne

Kevin Berry John Beadles

Date Published:

February 2025

Prepared by

OAK RIDGE NATIONAL LABORATORY

Oak Ridge, TN 37831-6283 managed by

UT-BATTELLE, LLC

for the

US DEPARTMENT OF ENERGY

under contract DE-AC05-00OR22725

This report was prepared as an account of work sponsored by an agency of the United States

Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof.

iii

CONTENTS

CONTENTS ................................................................................................................................................. iii

APPROVALS

1. INTRODUCTION

2. SCOPE

3. FABRICATION DOCUMENTATION

4. TECHNICAL REQUIREMENTS

4.1 SPECIFICATIONS SUMMARY

4.2 SPECIFICATIONS DETAILS

5. QUALITY ASSURANCE

5.1 ACCESS FOR SOURCE SURVEILLANCE INSPECTIONS

5.2 CALIBRATION PROGRAM

5.3 CONTROL OF NON-CONFORMANCES

5.4 MANUFACTURING PLAN

5.5 DEVIATIONS

5.6 EXAMINATION, TESTING AND INSPECTION

5.7 ELECTRONIC DOCUMENTS

5.8 WARRANTY

6. PACKAGING AND SHIPPING

7. FINAL DOCUMENTATION

7.1 SUBMITTALS

7.2 LANGUAGE

7.3 INSPECTION REPORTS

8. VERIFICATION AND ACCEPTANCE

9. REFERENCES

APPROVALS

Rev 00 Rev 01 Rev 02 Rev 03 Approvals Preparer Project Scientist Lead Group Lead Powder Diffraction Project Engineer Lead Instrument Engineering Group Lead

Section Head Diffraction Group Lead HFIR Science Support

Technical Concurrence Scientific Associate Instrument Scientist Instrument Computational Scientist

Section Head Sample Environment and Labs

Instrument Engineer Detector Scientist Instrument Designer

Revision Description of Changes 0 Initial Release

11:59 am 12-Mar-2025

JOHN D. BEADLES | BEADLESJD@ORNL.GOV

11:14 am 12-Mar-2025

KEVIN BERRY | BERRYKD@ORNL.GOV

11:15 am 12-Mar-2025

ELIAS PULLIAM | PULLIAMEN@ORNL.GOV

11:36 am 12-Mar-2025

GARY LYNN | LYNNGW@ORNL.GOV

4:42 pm 12-Mar-2025

JOE PADDISON | PADDISONJA@ORNL.GOV

11:35 am 12-Mar-2025

DANIELLE YAHNE | YAHNEDR@ORNL.GOV

12:44 pm 12-Mar-2025

MALCOLM COCHRAN | COCHRANMJ@ORNL.GOV

11:17 am 12-Mar-2025

MIKE MCDOWELL | MCDOWELLMW@ORNL.GOV

6:50 pm 13-Mar-2025

MATTHEW G. TUCKER | TUCKERMG@ORNL.GOV

11:56 am 14-Mar-2025

AMY JONES | BLACKA@ORNL.GOV

11:15 am 12-Mar-2025

ELIAS PULLIAM | PULLIAMEN@ORNL.GOV

11:34 am 14-Mar-2025

CLARINA R. DELA CRUZ | DELACRUZCR@ORNL.GOV

8:48 am 13-Mar-2025

STUART CALDER | CALDERSA@ORNL.GOV

11:15 am 12-Mar-2025

ELIAS PULLIAM | PULLIAMEN@ORNL.GOV

1. INTRODUCTION

The High Flux Isotope Reactor (HFIR) HB-2A POWDER instrument is undergoing an improvement project to upgrade the detector with the Modular Interdigitated Detector Array System (MIDAS). This new detector upgrade will allow for continual coverage of the powder diffraction neutron scattering volume without rotation of the detector, as the current instrument operates. This will provide a significant increase in instrument experiment throughput by decreasing scan times by roughly 30x. Part of the new detector array will require a fine radial collimator to filter the sample scattered neutrons and provide adequate detector resolution for proper data acquisition. The new radial collimator will require an oscillation system (±2 degrees) to effectively reduce background noise and unnecessary scattering from the sample environment. The collimator will be mounted above the oscillation system and the assembly will be located inside the instrument shielding between the sample center and the detector array. This document will outline the technical specifications for the fabrication and procurement of the MIDAS radial collimator.

2. SCOPE

This equipment specification defines requirements for materials, fabrication, inspection, quality assurance, and delivery to Oak Ridge National Laboratory (ORNL) of a complete radial collimator assembly. The Collimator assembly will be installed on the MIDAS instrument located on beamline HB- 2A at HFIR. The High-Resolution Collimator Assembly, hereinafter referred to as the Collimator, is detailed in the following sections. Any ancillary components not specifically defined but required for complete assembly, shall be considered included herein, unless specifically excluded.

Herein, Vendor refers to parties responsible for providing the fabricated Collimator within the scope of this specification. ORNL refers to UT-Battelle, LLC and its representatives including Oak Ridge National Laboratory and HFIR.

The Vendor is responsible for detailed design, fabrication, inspection, packaging, and shipment of the Collimator assembly in accordance with the requirements of this specification. Any exceptions to this specification shall be clearly noted as such in the Vendor’s fabrication documentation. Any exceptions indicated by the Vendor will require approval from ORNL prior to acceptance.

The Collimator will mount on an oscillation table system that will rotate ±2 degrees at a variable frequency but the oscillation drive system is not part of this procurement. Alignment locations, such as dowel holes, will be required for mounting to the oscillation table and will be detailed within this document.

3. FABRICATION DOCUMENTATION

The radial collimator shall be fabricated as defined by all requirements in this equipment specification. The vendor will provide final detailed design documentation to ORNL for review. Approval of the final design will require written confirmation in order to begin fabrication.

4. TECHNICAL REQUIREMENTS

The technical requirements provided in this document outline the optimal design specifications for the fabrication of the MIDAS radial collimator and have been created using [1] and [2] as references. They have been developed with the instrument science team, engineering and designer support. Figure 1 shows a rendering of the conceptual Collimator assembly, and Table 1 outlines the specifications summary for the collimator design.

Figure 1: Rendering of conceptual design of MIDAS radial collimator on oscillation table.

4.1 SPECIFICATIONS SUMMARY

Table 1: Technical Requirements and Manufacturer Specifications.

Reference No. Requirement Specification

4.1.1 Inner radius of the foils 500 mm

Reference 4.2.4

4.1.2 Outer radius of the foils 950 mm

Reference 4.2.4

4.1.3 Blade angle 0.502 degrees

4.1.4 Required active height of the foils at outer radius 316 mm

4.1.5 Cutoff distance 14.8 mm

4.1.6 Total number of blades 308 foils

4.1.7 Detector active area 155.118 degrees

4.1.8 Minimum inner radius of the structure 498 mm

4.1.9 Maximum outer radius of the structure 952 mm

4.2 SPECIFICATIONS DETAILS

4.2.1 The collimator shall be designed with individually installed and tensioned foil blades to accommodate the potential for individual blade replacement by ORNL.

4.2.2 Collimator foils shall be of the stretched-film type (material PETP) and be optimized to minimize thickness. The neutron absorber material shall be Gadolinium Oxide (Gd2O3). The Vendor shall specify in their proposal submittal the thickness of the blades and neutron absorbing coating. Total thickness of the blades (foil plus coating) should be less than 125 μm with neutron absorbing material on both sides with absorption properties similar to Gd2O3 at a density of 1.2

4.1.10 Maximum total height of collimator assembly 485 mm

4.1.11 Maximum total angular span of collimator assembly from center axis

173.5 degrees

4.1.12 Gadolinium oxide coating on polyethylene terephthalate (PETP) blades

Reference 4.2.2

4.1.13 Structural members of collimator shall be coated with neutron-absorbing material to minimize background scatter

Reference 4.2.3

4.1.14 Blades shall be individually installed and tensioned to accommodate individual blade replacements

Reference 4.2.1

4.1.15 Collimator shall have lifting features for movement and installation

Reference 4.2.6

4.1.16 Collimator base shall have alignment holes for assembly to collimator oscillation table

Reference 4.2.7

4.1.17 The Vendor shall provide protective storage covers that will attach to the outside of the Collimator structure

Reference 4.2.8

4.1.18 The structure of the collimator and assembly hardware shall be constructed of non-magnetic materials

Reference 4.2.5

4.1.19 The Vendor shall include in their proposal quotes for 10 spares blades

Reference 4.2.9

4.1.20 Collimator shall be packaged to assure no damage or affect to performance occurs during shipping to ORNL, shipping plan required to be approved by ORNL prior to shipping

Reference 6

4.1.21 Manufacturer shall specify total weight of collimator assembly g/cm^3 and a total coating thickness of 72 μm. Neutron transmission for a neutron beam perpendicular to one blade should be less than 30.27% for 37 meV (1.5Å) neutrons.

4.2.3 All exposed surfaces on the interior opening and inner and outer edges along the inner and outer diameter of the collimator, including structural members, shall be coated with neutron-absorbing material to minimize background scatter. The Vendor shall specify in their proposal submittal the thickness and neutron-absorbing material for the structural members.

4.2.4 The inner and outer radii of the collimator housing are specified in Table 1. Each blade shall span the distance between the inner radius and the outer radius of the collimator. The Vendor shall specify in their proposal submittal the shape and size of the blades which will occupy the collimator housing volume.

4.2.5 The Collimator will reside in the vicinity of neutron and gamma fields as well as magnetic fields. The structure of the collimator and assembly hardware shall be constructed of non-magnetic materials. Aluminum is the preferred choice for the structure due to its lighter weight. Stainless is the preferred choice for the hardware. The Vendor shall specify in their proposal submittal the material alloy for each component of collimator assembly.

4.2.6 The collimator will be handled by an overhead crane. The Vendor shall provide 3 points about the center of gravity for lifting with an overhead crane hook using 3/8-16 UNC Crosby swivel hoist rings, hoist rings shall be provided by ORNL. Details of lift point locations shall be determined during final design phase.

4.2.7 The collimator shall be placed on an oscillator system designed by ORNL, to accommodate repeatable alignment the vendor shall provide features in collimator for alignment pins. Details on locations and tolerancing of alignment pins to be during design process with vendor and reviewed and approved by ORNL during final design review.

4.2.8 The Vendor shall provide protective storage covers that will attach to the outside of the Collimator structure. This storage cover shall totally enclose the exposed blades to protect them from damage when the Collimator is being moved or stored. The cover shall be light weight and easy to install/remove.

4.2.9 The Vendor shall include in their proposal quotes for 10 spares blades. The blades shall be packaged in a rigid container to accommodate long term storage and prevent any damage to blades.

4.2.10 The Vendor shall clearly specify in their proposal submittal the following information:

• Angular spacing of foil centers with associated tolerances

• Overall angular span of collimator opening

• Overall angular span of ‘active area’ with associated tolerances

• Foil material type

• Foil height

• Foil inner radius

• Foil outer radius

• Foil thickness (mm)

• Neutron absorber type and thickness per side on foil

• Total collimator height with associated tolerances

• Total collimator length with associated tolerances

• Neutron Absorber Type and Thickness on structural members

• Structure material type

• Hardware material type(s)

4.2.11 The Vendor shall submit a dimensional inspection report prior to shipping the Collimator.

The documentation shall certify the blade positions and overall outer dimensions of collimator structure are within the Vendor’s submitted allowable fabrication tolerance limits.

4.2.12 The Vendor shall obtain Certified Material Test Reports (CMTR) for all structural materials used in the Collimator Assembly fabrication. The reports shall be traceable by heat numbers and material markings. The reports shall be submitted to ORNL for review and acceptance prior to shipping. Dimensional inspection report and CMTR shall be approved prior to shipping.

5. QUALITY ASSURANCE

The Vendor shall submit a Quality Assurance (QA) program or “Quality Control System” for evaluation with the quote. The QA Program shall address at a minimum the following elements: A written QA program, training and qualifications, improvement process, documents and record control program, control of procedures, design control, procurement control, and an inspection and test program. The Vendor shall ensure that all work is done in accordance with this QA Plan. The Vendor is responsible for the administration and performance of all testing, inspections, and examinations, whether performed at the Vendor’s facilities or at other facilities. ORNL reserves the right to witness all tests, inspections, and examinations.

5.1 ACCESS FOR SOURCE SURVEILLANCE INSPECTIONS

As part of ORNL’s quality assurance program, source surveillance activities may be conducted at the Vendor’s facility or any sub-tier facility that ORNL determines necessary to ensure that quality objectives are met. Such surveillance may include auditing and monitoring of production processes, in-process inspection and controls, chemical and physical certifications, final inspection and tests, preparation for shipment, and review of certification data. The Vendor shall provide ORNL representatives access to all data and operating areas pertinent to the contract. Source surveillance by ORNL representative shall not constitute product acceptance by ORNL and shall in no way relieve the Vendor of the responsibility to furnish acceptable items.

5.2 CALIBRATION PROGRAM

All equipment used in tests, inspections, and examinations shall be calibrated in accordance with the equipment manufacturer’s recommendations. All equipment shall be tagged in some manner to indicate the date of last calibration and the status of that calibration.

Procedures shall be established for correction of out-of-tolerance equipment. The procedures shall provide for tagging and removal of such equipment from the work area.

Procedures shall be established for re-testing or re-inspecting when out of tolerance equipment has been used for testing or inspection.

5.3 CONTROL OF NON-CONFORMANCES

The Vendor may use their existing nonconformance program to identify, report, and recommend disposition of all non-conformances, but dispositions that would leave any remaining nonconformity must be submitted to ORNL for approval. The request should identify the affected item(s) by name and serial number, citing the drawing/specification number and revision number containing the specific requirement that has not been met. It should state the number of nonconforming items being reported. The request should include a description of the nonconformity, identifying requirement(s) not met. The supplier may attach a description of the cause and a corrective action plan and schedule if pertinent.

Note: The issuance and acceptance of such a request in no way limits or affects the warranty provision of the Agreement. Such a request shall not establish a precedent or obligation to accept existing or future items not conforming to all provisions of the Agreement.

5.4 MANUFACTURING PLAN

The Vendor shall include a draft manufacturing plan in their proposal submittal. The Vendor shall submit a final Manufacturing Plan for ORNL approval prior to the start of fabrication. The Manufacturing Plan shall include, but shall not be limited to, the following items:

• A milestone schedule, showing how the Collimator Assembly will be delivered by the contract date. The milestones shall include material procurement, fabrication, assembly, inspection, and shipping.

• Inspections and examinations to be performed (Inspection Plan).

• Identification of hold points.

• Subcontractors to be used, if any, and means of controlling quality at subcontractors.

5.5 DEVIATIONS

The Vendor may propose deviations from the specifications, drawings or other technical requirements of the procurement. Where time is a consideration, the Vendor may communicate the proposed deviation directly to the engineer or technical lead, with a copy to ORNL’s buyer. The engineer or technical lead will evaluate the technical aspects and make recommendations to the buyer, who will communicate acceptance or disapproval to the Vendor. The request should identify the affected items, drawing/specification number and revision number, a description of the proposed deviation, and justification for it. The request for deviation shall be submitted to ORNL and approval obtained prior to making any change.

5.6 EXAMINATION, TESTING AND INSPECTION

All inspections or examination reports shall contain the following information, as a minimum:

• Job title

• Inspection date

• Unique report number

• Equipment identification

• Specific inspection or examination, including procedure designation

• Identification of measuring and test equipment used and their latest calibration dates

• Inspection results

• Actions taken as a result of any discrepancies noted during the inspection

• Signature or initials of the person performing the inspection or examination and his/her qualifications, and the signature or initials of the person witnessing the test

5.7 ELECTRONIC DOCUMENTS

All documentation shall be submitted in English in electronic format. Wherever feasible, documents shall be submitted in Adobe Portable Document Format (PDF) in addition to any other formats typically provided by the Vendor.

A 3D file of the collimator shall be submitted to ORNL as part of the final design submission. The file format shall be a native PTC CREO file or .stp file format compatible with CREO.

5.8 WARRANTY

The Vendor shall include details of warranties in their proposal submittal. The warranty shall not cover abuse or damage from mishandling by ORNL.

6. PACKAGING AND SHIPPING

The Vendor shall submit a packaging and shipping plan to ORNL for approval prior to shipment. The Collimator Assembly shall be packaged and shipped by the Vendor to Oak Ridge National Lab in Oak Ridge, Tennessee, USA. ORNL reserves the right to reject any or all items if the Vendor deviates from the approved plan. The packaging and shipping plan shall meet or exceed the following requirements:

The packing and shipping plan shall include provisions for sealing, securing, and shipping the Collimator Assembly. Special attention shall be made to protect the delicate assembly from shock or impact damage. The Vendor shall install an appropriate shock sensor or similar recording device to indicate possible abusive handling during shipping. A typical sensor is manufactured by Instrumented Sensor Technology Inc., Okemos, Michigan 48864 USA.

The Collimator Assembly shall be totally enclosed and secured in a wooden crate that is adequately designed to protect against possible shipping damage. Internal packaging shall further enhance physical and environmental protection for the Collimator Assembly. The outside of the crate shall be plainly and permanently labeled with the following:

• Gross Package Weight

• Package Identification Number

• Vendor identification and address

• ORNL’s specification number: HB2A-EQ-20-0001

• ORNL’s contract number

• ORNL’s shipping address

• Attention: Elias Pulliam – HFIR HB-2A MIDAS Upgrade Project

The Vendor’s packaging crates shall be designed and built to accommodate handling by fork trucks.

ORNL will inspect each shipping crate upon arrival. Any damage will be documented and, if necessary, the Vendor will be contacted to establish a plan of resolution.

The Vendor shall notify ORNL of a shipping date not less than fifteen (15) working days prior to shipment. The Vendor shall transport the Collimator Assembly F.O.B. via a commercial carrier.

7. FINAL DOCUMENTATION

7.1 SUBMITTALS

Vendor shall submit documentation as referenced previously in this specification and listed again in the following table. All documents listed in this table must be approved by ORNL prior to shipping the Collimator Assembly.

DOCUMENT WHEN REQUIRED SECTION

Quality Assurance Program – Unless previously provided With quote/proposal 5.0 Draft Manufacturing Plan With quote/proposal 5.4 Exceptions to Specification and Drawings With quote/proposal 2.0 Fabrication Tolerances With quote/proposal 4.0 Foil and Coating Specifications With quote/proposal 4.0 Foil Replacement Cost With quote/proposal 4.0 Neutron Absorber Material Specifications With quote/proposal 4.0 Foil Shape and Size With quote/proposal 4.0 Materials of Construction With quote/proposal 4.0 Request for Deviation Prior to making change 4.0 & 5.5 Non-conformance Reports At time of occurrence 4.0 & 5.3 Final Manufacturing Plan Prior to fabrication 5.4 Vendor’s Final Design Package Prior to fabrication 3.0 Packaging and Shipping Plan Prior to shipping 6.0 Dimensional Inspection Documentation Prior to shipping 7.3 Material Certification Documentation Prior to shipping 4.0 Vendor’s Certificate of Compliance Prior to shipping 8.0

7.2 LANGUAGE

All supporting documentation shall be in English. Translated versions of the original documents signed by the responsible personnel are acceptable.

7.3 INSPECTION REPORTS

Inspection documentation and reports shall be performed in accordance with Specification Section 6.6.

8. VERIFICATION AND ACCEPTANCE

The following shall be the basis for final acceptance:

• Receipt and approval of all data as required in this Equipment Specification and listed in Section 7.1.

• Confirmation by a ORNL representative upon delivery that the Vendor produced the Collimator in accordance with this Equipment Specification.

• Confirmation by a ORNL representative that Collimator arrived undamaged.

9. REFERENCES

[1] S. Calder, M. Cochran, C. Dela Cruz, A. Jones, and E. Pulliam, "Science Requirement Document HB- 2A POWDER," Oak Ridge National Laboratory, Oak Ridge, 2023.

[2] S. Calder, M. Cochran, E. Pulliam, et al., "HB-2A MIDAS Radial Collimator Science Requirements,” Oak Ridge National Laboratory, Oak Ridge, 2025.