PWS Forest Service cryocooler for detector rev7.docx

Replace Cryocooler Detectors 12760420Q0142

Performance Work Statement (PWS) USDA/Forest Service Replace LN2 Dewars w/ Cryocoolers and Integrate Detectors National Infrared Operations (NIROPS) April 13, 2020

1.0 Background

The US Forest Service National Infrared Operations (NIROPS) requires two split cryocooler systems for use in chilling Teledyne/Judson Technologies MCT infrared detectors mounted in two airborne line scanners (Texas Instruments RS-25). Reference the detector and scan head images in Technical Exhibits 1 & 2. To meet this requirement, the replacement of two Liquid Nitrogen (LN2) dewars will be replaced with split cryocooler systems, and the MCT detector pairs will be relocated into the new split cryocooled systems. The implementation of cryocooled detectors in the two systems will eliminate the need for NIROPS crews to carry a LN2 dewar onboard the aircraft and eliminate the logistics of maintaining a supply of LN2. This will also improve safety onboard NIROPS aircraft.

2.0 Description of Work or Scope

The Contractor shall provide all labor, materials, equipment, transportation, management and supervision to remove two pairs of detectors from two government provided LN2 Dewars and reinstall on the cold finger of two new contractor supplied cryocooler systems. Build custom Dewar with mounting flange for each new split cryocooler system. All work shall be performed in accordance with the terms and conditions of the order, the PWS, technical exhibits and applicable federal, state and local laws and regulations.

2.1 Task 1

a. Remove the two cold filter assemblies and corresponding dual detector pair from the cold finger of the two each government furnished LN2 Dewars within 14 calendar days of receipt (Reference image Item 1). Maintain the serial number association and devise a method to correctly orientate the dual detector pair w/cold filter assembly onto the new cold finger. Communicate the results of the first detector pair removal and report any issues encountered to the Technical Representative. The Technical Representative shall concur on proceeding with removal of the second cold filter assembly and corresponding dual detector pair.

b. Supply two new split cryocooler systems utilizing a flexure bearing compressor including any necessary heatsinks, and build custom dewar with mounting flange that has low reflectance surfaces (excluding the cold head gasket seal area) (Please reference Technical Exhibits 2 through 6). Provide the Forest Service Technical Representative with availability and delivery information for the Contractor acquired cryocoolers within 30 calendar days after award.

c. Reinstall the two government furnished detector pairs with cold filters onto the custom built cryocooler systems cold finger (custom adaptor may be required) in the proper orientation and physical distance relationships (reference Technical Exhibits 2 through 6 and solid model files). Maintain the detector serial number and calibration data associations with the serialized cryocooler system. These cryocooled cold finger(s) will require custom built dewars and integrated mounting flange. Maintain the associated Teledyne/Judson Technologies serial number and calibration data with the paired serialized cryocooler assembly and deliver with the completed cryocooler systems to the Forest service.

d. After assembly, setup and or configuration is complete test for successful operation. Successful operation is defined in para 3.0. Report test results to the FS Technical Manager.

e. If reinstallation of government furnished detectors is unsuccessful, contact the Forest Service Technical Representative prior to beginning Task 2 for the second sets of new detector pairs.

2.2. Task 2 Option, CLIN 0002

If the removal or relocation of the government furnished detector pairs is unsuccessful, the Contractor will procure, with Technical Representative concurrence, two new identical detector(s) as contained within the Teledyne/Judson Technologies Model #J15D12-M360-S165U-58-CF2:2E, Part #453169 (Reference image Item 1) and install them on the custom built cryocoolers systems cold fingers (custom adaptor may be required) in the proper orientation and physical distance relationships. These cryocooled cold finger(s) will require custom built dewars and integrated mounting flange (Reference Technical Exhibits 2 through 6 and the ‘government furnished LN2 dewars with detectors’). Maintain the associated Teledyne/Judson Technologies serial number and calibration data with the paired serialized cryocooler assembly and deliver to the Forest Service. Prior to procuring parts under this option, the Contracting Officer will exercise CLIN 0002 by modification to this order to authorize the Contractor to proceed. If this CLIN is exercised and there are impacts to the performance period, the performance period may be modified.

3.0 Acceptance Testing

a. Upon completion of work and no later than 30 calendar days prior to the end of the performance period, ship new cryocooler systems to:

NIICD/NIROPS Bld 410B ATTN: Charles Kazimir 3833 S. Development Ave.

Boise, ID 83705

b. The Government will perform acceptance testing within 10 calendar days of receipt. The cryocooler system must meet the following acceptance criteria:

1. Each split cryocooler system will conform to elements listed in the Description and Technical Exhibits 1-6 of the PWS.

2. Each split cryocooler system demonstrates ability to be standalone operable at main power up.

3. Each split cryocooler systems will be no larger than as specified in Exhibit 2 excluding the cold head heat sink.

4. Orientation of the detectors are correct and validated by seeing the signal from the 3-5um channel occur before the 8-12um channel signal, when correctly installed in the RS-25 Scan head and viewed with an Oscilloscope.

5. The cryocooler system and associated control electronics operate as specified and validated through functional bench test at room temperature. A Black Body signal will be stepped through a range of 300 Kelvin to 950 Kelvin and will be focused by the RS-25 optics onto the new cryocooled detectors after chilled equilibrium of about 77 Kelvin is reached <= ~20 minutes. Electrical measurements will be made at the LOW BIAS for the 3-5um channel and at the MEDIUM BIAS for the 8-12um channel, as outlined on the Teledyne/Judson Technologies “TEST RESULTS FOR DUAL ELEMENT PHOTOCONDUCTIVE MERCURY CADMIUM TELLURIDE DETECTOR” performance datasheet.

6. The system test supports operability with a mains power of 28VDC. Testing validation performed through use of calibrated electronic multimeter or Oscilloscope.

c. The Technical Representative will advise the Contractor of the results of acceptance testing within 5 calendar days after testing and accept or reject the work. In the event the work is unacceptable, the Technical Representative and Contractor will coordinate the rework that may be required to bring the units to an acceptable state or conclude otherwise in coordination with the Contracting Officer. Inspection and acceptance is in accordance with Clause FAR 52,212-4(a).

4.0 In the unlikely event that the government furnished detectors or newly acquired detectors cannot be successfully reinstalled into a new cryocooler system in Task 1 or Task 2 due to product technical limitations, this order may be terminated for the convenience of the government under the terms of clause FAR 52.212-4(l)

5.0 Government Furnished Property (GFP) and Information

a. The Government will provide the following government furnished property and information to the Contractor for use in the performance of work. This property shall be used and maintained by the Contractor in accordance with the provisions of the “Government Furnished Property”, Contract Clause, 52.245-4 incorporated into this order.

b. The Technical Representative will provide two detector assemblies and a 3D Texas Instruments RS25 Scan Head Model in Solidworks STEP or IGES format for the Contractor’s use in performing the work. GFP and Information will be provided to the Contractor within 5 business days after award or as otherwise agreed to between the parties. Contractor employees granted access to the Information will be required to sign a Non Disclosure Agreement (NDA) prior to the FS transferring the information. Information files shall be destroyed upon completion of the work.

The Government Furnished detectors shall be incorporated into the work and returned to the FS as part of the two new cryro coolers systems. The remaining assembly pieces shall be returned to the Forest Service.

1. SolidWorks 3D assembly and part files. A nondisclosure agreement is required prior to release of these files to the Contractor (Information).

2. Two (2) Teledyne/Judson Technologies MCT Model# J15D12-M360-S165U-58-CF2:2E, Part# 453169 detector assemblies (GFP value - $8,500 each).

6.0 Place of Performance

The contractor shall perform services at its own facilities.

7.0 Period of Performance

The period of performance 270 calendar days after award.

8.0 Payment

The Contractor may invoice at a minimum upon completion of each task for services completed and accepted by the COR through the Internet Payment Processing System (IPP). Any requests for payment for new cryocoolers shall be supported with invoice(s) at the price paid for the cryocooler(s). The Contractor shall retain responsibility for the items until incorporated into the work. Invoices shall be in sufficient detail to validate the request for payment. Identify the applicable Task and CLIN in the request for payment (invoice).

9.0 Forest Service Technical Manager

The Technical Manager is responsible for the day to day technical communication with the Contractor relating to the work. In no event, however, will any understanding, agreements, modification, change order, or other matter deviating from the terms of this order be effective or binding upon the Forest Service unless formalized by proper contractual document executed by the Contracting Officer.

Technical Representatives:

Michael Mann or Charles Kazimir 208-387-5647 Michael.Mann@usda.gov Charles.Kazimir@usda.gov

10.0 Quality Control and Assurance (Commercial Services)

The Forest Service relies on the Contractor’s existing quality assurance system for commercial services as a substitute for Government inspection and testing before tender for acceptance unless customary market practices for the commercial service being acquired include in-process inspection. Any in-process inspection by the Government shall be conducted in a manner consistent with commercial practice. The Forest Service may conduct quality assurance for its benefit and has the right to refuse acceptance of nonconforming services. Quality issues with services tendered for acceptance or rejected by the Government shall be resolved under Contract Clause FAR 52.212-4(a), “Contract Terms and Conditions-Commercial Items”.

Performance Requirement Summary – The Performance Requirements Summary (PRS) table describes the acceptable quality level of performance expected by the Government and the means by which the Government may use to validate acceptable services.

10.1 Performance Requirements Summary Table

PWS

Para #

3.0

Deliver 2 each complete cryocooler systems with integrated MCT detector pairs

MCT detector pairs are integrated into cryocooler system and adequately cools as specified in Technical Exhibit 2 and conforms to the size and placement criteria.

Cryocooler system performs within the design parameters defined in Acceptance Testing, para 3.0

Technical Representative(s) acceptance testing as outlined in Para 3.

10.0 Deliverables

1.) Dual detector assemblies including detectors, filters, and cold shield, as described in this PWS and Technical Exhibits to be mounted within a cryocooled custom Dewar within 270 calendar days of award.

2.) The data specified in Technical Exhibit 1, Section 2.4. Deliver with detector assemblies.

3.) Warranty outline, instructions on how to execute and periods.

4.) GFP LN2 dewars.

11.0 Items and Technical Exhibits

Items 1-4 (17 Reference Images of current cold finger and scan heads installed with visual measured references) Technical Exhibit 1, IR Detector Parameters Technical Exhibit 2, Cryocooler System requirements Technical Exhibit 3, Dewar Bottom View Technical Exhibit 4, Detector Layout Technical Exhibit 5, Detector FOV Layout Example Technical Exhibit 6, Existing Dewar (for reference)

Item 2

Item 3 King Air photos A. KingAir Pod flange detail

B. KingAir Minimum distance to belly

C. KingAir Starboard side belly to mounting frame aft

D. KingAir Starboard side belly to mounting frame forward

E. KingAir Starboard side distance to Pod

F. KingAir Starboard side looking forward space to mounting frame

G. KingAir Starboard side looking forward space to mounting frame 2

H. KingAir Starboard side Space for gas tube

I. KingAir Starboard side space to mounting frame

J. KingAir Starboard side vertical measure to Belly

K. KingAir View of Starboard side max distance front to back

Item 4 Citation photos A. Citation Scan head in scanner well overall

B. Citation Starboard side front to aft distance

C. Citation Starboard side scanner well to scan head distance D. Citation Starboard side scanner well to scan head distance 2

E. Citation Starboard side scanner well to detector cover distance image4.jpeg image5.jpeg image6.jpeg image7.jpeg image8.jpeg image9.jpeg image10.jpeg image11.jpeg image12.jpeg image13.jpeg image14.jpeg image15.jpeg image16.jpeg image17.jpeg image18.png image1.png image2.jpeg image3.jpeg