Specifications List 1152007.pdf
PDF 161 KB Posted
- Attached to
- Lanthanum Bromide Gamma Detector - Auburn, AL
- Solicitation number
- 1232SA25Q0556
About this file
This document is a detailed Specification sheet for a Lanthanum Bromide (LaBr) Scintillation Detector, issued by the USDA/ARS Soil Dynamics Research Lab in Auburn, AL. The specification outlines precise technical requirements for a detector with a LaBr Crystal (B380), 88.9mm diameter x 203.2mm, compatible with a 3.5" PMT R10233 for spectroscopy applications. Key specifications include a stainless steel housing, mu-metal shield, operation in temperatures between 5°C to 50°C, and specific performance parameters such as pulse height resolution (PHR) measurements at 662keV, 1332keV, and 2614keV. The power supply requirements include a passive voltage divider, SHV and BNC connectors, and a Cockcroft-Walton type high voltage power supply from Hamamatsu. Additional technical details specify a MOLEX connector configuration and precise wiring instructions, with a specific note about no connection on pin 3 of the connector.
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| File | Type | Posted |
|---|---|---|
| Combined Synopsis Solicitation_1232SA25Q0556.pdf | ||
| Solicitation Clauses and Provisions_1232SA25Q0556.pdf |
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Specifications – The “equal” item in accordance with the “Brand Name or Equal” provision of this solicitation must meet or exceed the following characteristics:
Requirement: (LaBr) Lanthanum Bromide Scintillation Detector Specifications – Brand Name or Equal
Delivery: must be FOB to USDA/ARS Soil Dynamics Research Lab 411 South Donahue Drive Auburn, AL 36832
Minimum Requirement Specifications:
General:
LaBr Crystal (B380), 88,9mm diam. x 203,2mm 3,5'' PMT R10233, for spectroscopy application (anode pulse rise time: 10ns ; electron transit time: 51ns) for a use with a negative high voltage
Stainless steel housing (th. 1,2) with end-on radiation entrance window (th. 1,2mm) Mu-metal shield No shock, vibration Operation under normal environment excluding vacuum
Operating temperature: 5°C to 50°C - rate: 8°C/hour Storage temperature: -20°C to 50°C - rate: 8°C/hour
Performance:
End-on PHR will be measured at 662keV, 1332keV, 2614keV End-on PHR @ 662keV expected to be less than 3,5% - Target value (this value is not a guaranteed value, it will be taken as an objective on the best eƯort basis) End-on PHR @ 2614keV expected to be less than 2,0% - Target value (this value is not a guaranteed value, it will be taken as an objective on the best eƯort basis)
Power supply:
Passive voltage divider for use with negative HV with anode and last dynode outputs SHV connector for HV BNC connectors for anode output and last dynode output Cockcroft-Walton type high voltage power supply (Hamamatsu C12842-01)for use with negative HV
Note: Compatible with the design 89 S 203 /3,5 /B380 (as per the drawing 2-3-8391 ind A) with PMT R10233
MOLEX connector (ref: 90156-0146 WM 8021-ND) for low voltage bias, common ground, control voltage, anode signal output and signal ground wiring of the connector as per the drawing 6-4-8395 ind - Note: no connection on the pin 3 of the connector
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