We present here the first direct and detailed measurements of the spatial
distribution of the ionizing radiation surrounding a hadron collider
experiment. Using data from two different exposures we measure the effect of
additional shielding on the radiation field around the Collider Detector at
Fermilab (CDF). Employing a simple model we parameterize the ionizing radiation
field surrounding the detector.Comment: PDF document, 5 pages, including 10 encapsulated postscript figures:
Proceedings for the IEEE/NSS-MIC 2003 Conference, Portland, Oregon, October
19-25, 200