How to calculate the dose rate?

Dear FLUKA experts,
        I want to calculate the radiation dose rate of 20m away from a
Tungsten target bombarded by a 1.6GeV and 100kW proton beam.
Then I use the dose rate estimate radiation damage and lifetime of cable
and epoxy resin from the CERN measurement data (CERN-2001-006).
I find that they put polymer-alanine dosimeters together with cable
samples. In fact, the dose is absorbed dose of dosimeter but not cable
samples.
It means that I can't estimate the absorbed dose rate of cable sample
and epoxy resin and must estimate absorbed dose rate of dosimeters by
FLUKA.
Or if I estimate the absorbed dose rate of cable sample and epoxy resin,
how to converse it to measurement dose rate of dosimeter?
So, how to use FLUKA to simulate the dose rate corresponding with the
dosimeter and employing CERN measurement
  data to estimate the life time of cables and epoxy resin?
       Thank you very much!

                                                          Hantao Jing
                                                          2011-4-25
Received on Thu Apr 28 2011 - 09:15:54 CEST