Scionix Scintillation Detector
Details
Associated tenders • 0
Status
Date
Description
Notice ID
12405B20P-993893
Related Notice
Department/Ind. Agency
AGRICULTURE, DEPARTMENT OF
Sub-tier
AGRICULTURAL RESEARCH SERVICE
Office
USDA ARS SEA AAO ACQ/PER PROP
General Information
Contract Opportunity Type: Presolicitation (Original)
All Dates/Times are: (UTC-06:00) CENTRAL STANDARD TIME, CHICAGO, USA
Original Published Date: Mar 02, 2020 11:19 am CST
Original Response Date: Mar 09, 2020 03:00 pm CDT
Inactive Policy: 15 days after response date
Original Inactive Date: Mar 24, 2020
Initiative:
None
Classification
Original Set Aside: Total Small Business Set-Aside (FAR 19.5)
Product Service Code: 6640 - LABORATORY EQUIPMENT AND SUPPLIES
NAICS Code: 334516 - Analytical Laboratory Instrument Manufacturing
Place of Performance:
Auburn , AL 36832
USA
Description
THIS IS A NOTICE OF INTENT TO AWARD A SOLE SOURCE CONTRACT AND IS NOT A REQUEST FOR
COMPETITIVE QUOTES.
The USDA/ARS intends to award a Firm fixed price sole source contract under the authority of 41 U.S.C 253(c)(1) and FAR 6.302-1(a)(2), only one responsible source, to:
Berkeley Nucleonics Corp
2955 Kerner Blvd
San Rafael, California 94901
Specifications
V127A152/5M-HV-Q-X
Description: Large volume Nal(TI) detector with built-in high voltage power supply and special connector
Scintillation crystal: Nal*TI), 127 x 127 x 152 mm
Design drawing: VS-548-10
Housing: 1.0 mm thick stainless steel
Optical window: Quartz, 12.7 mm thick
Photomultiplier tube: 127 mm diameter, ET 9390
Internal high voltage generator: Corkcroft Walton type PS1822/5
High voltage regulation: By means of external control voltage via white Wire (pin 4 of MOLEX connector)
Internal HV supply HV control: accessible via hole in backcap
HV test point voltage: 1V = 1kV
Temperature sensitivity: Cathode-to-anode voltage changes: < 0.03, 0.01 typical (+20 degrees Celsius to 50 degrees Celsius)
Warm-up time: 0.3% of final output after 10 s. 0.02% of final output after 10 min.
High voltage discharge time: < 60 s to < 30 V
Line regulation: 0.005% per volt power supply voltage
Gain stability: < 1% up to 20 uA anode current
Power requirements: +5 V, power requirement 100 mW
Electrical Connections: Negative high voltage circuit (anode at ground potential). Readout at anode of PMT
45 cm long flying leads cables through two openings in backcap of detector to MOLEX connector type
90156-0146 WM 8021-ND (Farnell)
Function Cable colour Pin number
+5V input Voltage Red 1
Common ground Black 2
High Voltage control (INT) Yellow 3
Control Voltage White 4
Anode output Coax RG 174 core 5
Signal ground Coax RG 174 braid 6
Performance criteria
Energy resolution (662 keV) < 8.52 % FWHM
Note: The High voltage should be chosen as large as possible given the required dynamic
range. This ensures the optimum signal-to-noise ratio.
Ship To:
USDA, ARS, SDRU
411 S. Donahue Drive
Auburn, AL 36832
The NAICS code for this requirement is 334516; the small business size standard is 1000 employees.
This notice of intent is not a request for competitive quotes; however, interested persons may identify their interest and capability to respond to this requirement. All information received by 3:00 PM Central Time on March 9, 2020, will be considered by the Government. Responses shall be submitted to Lynn Hults at lynn.hults@usda.gov.
The e-mail subject line shall state: 12405B19P-993893 Notice of Intent to Sole Source. A determination by the Government not to compete this proposed contract based on responses to this notice is solely within the discretion of the Government.
NO TELEPHONE REQUESTS WILL BE HONORED.
Contact Information
Contracting Office Address
141 EXPERIMENT STATION ROAD
STONEVILLE , MS 38776
USA
Primary Point of Contact
Lynn S. Hults
lynn.hults@ars.usda.gov
Phone Number 9792609376