skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Actively driven thermal radiation shield

Abstract

A thermal radiation shield for cooled portable gamma-ray spectrometers. The thermal radiation shield is located intermediate the vacuum enclosure and detector enclosure, is actively driven, and is useful in reducing the heat load to mechanical cooler and additionally extends the lifetime of the mechanical cooler. The thermal shield is electrically-powered and is particularly useful for portable solid-state gamma-ray detectors or spectrometers that dramatically reduces the cooling power requirements. For example, the operating shield at 260K (40K below room temperature) will decrease the thermal radiation load to the detector by 50%, which makes possible portable battery operation for a mechanically cooled Ge spectrometer.

Inventors:
 [1];  [2];  [3];  [1]
  1. Livermore, CA
  2. Pleasant Hill, CA
  3. Alameda, CA
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
874467
Patent Number(s):
6396061
Assignee:
The Regents of the University of California (Oakland, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01J - MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
actively; driven; thermal; radiation; shield; cooled; portable; gamma-ray; spectrometers; located; intermediate; vacuum; enclosure; detector; useful; reducing; heat; load; mechanical; cooler; additionally; extends; lifetime; electrically-powered; solid-state; detectors; dramatically; reduces; cooling; power; requirements; example; operating; 260k; 40k; below; temperature; decrease; 50; makes; battery; operation; mechanically; spectrometer; radiation shield; vacuum enclosure; /250/

Citation Formats

Madden, Norman W, Cork, Christopher P, Becker, John A, and Knapp, David A. Actively driven thermal radiation shield. United States: N. p., 2002. Web.
Madden, Norman W, Cork, Christopher P, Becker, John A, & Knapp, David A. Actively driven thermal radiation shield. United States.
Madden, Norman W, Cork, Christopher P, Becker, John A, and Knapp, David A. Tue . "Actively driven thermal radiation shield". United States. https://www.osti.gov/servlets/purl/874467.
@article{osti_874467,
title = {Actively driven thermal radiation shield},
author = {Madden, Norman W and Cork, Christopher P and Becker, John A and Knapp, David A},
abstractNote = {A thermal radiation shield for cooled portable gamma-ray spectrometers. The thermal radiation shield is located intermediate the vacuum enclosure and detector enclosure, is actively driven, and is useful in reducing the heat load to mechanical cooler and additionally extends the lifetime of the mechanical cooler. The thermal shield is electrically-powered and is particularly useful for portable solid-state gamma-ray detectors or spectrometers that dramatically reduces the cooling power requirements. For example, the operating shield at 260K (40K below room temperature) will decrease the thermal radiation load to the detector by 50%, which makes possible portable battery operation for a mechanically cooled Ge spectrometer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {1}
}

Patent:

Save / Share: