CDF Radiation Measurements


General Information:

Several measurements have been made of the spatial distribution of the beam induced radiation field inside the CDF tracking volume. Our most accurate measurements are from thermal luminescent dosimeters (TLDs) installed throughout the tracking volume and harvested periodically. The data presented on these pages summarize our results as of July 12 2002. We find that the radial scaling of the radiation field follows a power law in 1/r, where r is the distance transverse from the beam line. Numerical results are summarized below in the table below.

Parameter Number Comments/Constraints
Ionizing Radiation Dose (300 +/- 60) Rad/pb^-1 r=3cm; |z| < 45cm
Radial Scaling (1/R)^{alpha} 1.5 < alpha < 2.1 (z dependent)
dose -> fluence conversion 1 rad = 3.87x10^7 MIPs/cm^2


A number of figures support the conclusions summarize in the table above. These figures and a brief description of their content are found at the link below. Detailed descriptions of our findings may be obtained from talks and the published references below.

Figures

Photographs

References:

  1. R.J. Tesarek et al., "A Measurement of the Radiation Environment in the CDF Tracking Volume", Proceedings RESMDD02 conference, 10-13 July 2002, Florence, ITALY. CDF internal note: 6060
    (Accepted for publication Nucl. Instr. & Meth. section A).


  2. S. D'Auria et al., "A Measurement of the Radation Field in CDF", Proceedings 6th Position Sensitive Detector Conference, 9-13 September 2002, Leicester, UK. CDF internal note: 6143.
    (to be published in Nucl. Instr. & Meth. section A).


Questions, comments: tesarek@fnal.gov
Last modified: Fri Oct 3 10:12:08 CDT 2003