Calorimetric Sensors for Energy Deposition Measurements

Details Calorimetric Sensors for Energy Deposition Measurements Calorimetric Sensors for Energy Deposition Measurements

Oct 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aps..dnp..b709l&link_type=abstract

Geophysical Research Letters, v. 24, No. 17, p. 2135 (1997).

Physics

2756 Magnetospheric Physics, Planetary Magnetospheres (5443, 5737, 6030), 5421 Planetology: Solid Surface Planets, Interactions With Particles And Fields, 5719 Planetology: Fluid Planets, Interactions With Particles And Fields

Scientific paper

A calorimetric sensor with several novel design features was developed. A small, solid slug (volume 0.0347 cc) of target material is suspended by nonconducting fibers and surrounded by an adiabatic enclosure in an insulating vacuum canister of stainless steel construction. The slug is in thermal contact with a low-mass, calibrated thermistor. Power depostion caused by the passage of radiation through the slug is measured by the rate of temperature rise. We have chosen slugs composed of Pb, Al, and LiAl. These sensors will provide an accurate determination of thermal power density and energy deposition from proton beams incident on target/blanket components of accelerator-based systems such as the Accelerator Production of Tritium Project and the Spallation Neutron Source. Tests with direct and diffuse proton beams have shown that the sensors are capable of detecting signals of about 10 micro-Watts with an absolute resolution of the order of 0.005 degrees Kelvin. Saturation occurs when the difference between the temperature of the slug and ambient temperature is approximately 10 degrees Kelvin.

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