American Nuclear Society
Home

Home / Store / Journals / Electronic Articles / Nuclear Science and Engineering / Volume 26 / Number 1 / Pages 117-121

Skyshine Considerations for Accelerator Shielding Design

Carl H. Distenfeld and Robert D. Colvett

Nuclear Science and Engineering / Volume 26 / Number 1 / Pages 117-121

September 1966

Format:

Price:$30.00
Member Price:$27.00
Member Savings:$3.00

The Special Measurements Group at the Brookhaven Alternating Gradient Synchrotron has conducted detailed experiments to evaluate and understand radiations emanating from the accelerator. As a part of this group study, skyshine and attenuation through Long Island sand was measured. Attenuation 90° from the apparent line source followed a half thickness of about one foot of sand through at least four decades. This corresponds to an attenuation length in sand of 80 g/cm2., Skyshine was measured out to 1000 m from the target. The empirical results fit the following expression for 4.2 × 1011 protons/sec on target: I = (3000/r2) exp(-r/600) [1 - exp(r/47)] where I is the dose rate in mrem/h and r is the source detector distance in meters. The source luminosity was determined, and a skyshine function was derived, based on the luminosity and the expected attenuation in air based on sand results. The empirical function was found to be within 25% of the derived expression.

 
 
 
Questions or comments about the site? Contact the ANS Webmaster.
advertisement