Keithley chambers for equip. performance evaluations of Panorex units

["Leif E. Peterson, PH.D." <PETERSON@plato.jsc.nasa.gov>]

Dear RADSAFErs,

Can anyone on RADSAFE recommend a suitable Keithley chamber for equipment
performance evaluations of Panorex dental units?  Specifically, the Panorex 
units of interest have a vertical fan beam 1/4 inch wide that rotate about a
central axis.  Certainly, the requirement for meeting detector charged particle 
equilibrium would be a major criterion for such a beam.  Any suggestions?

In addition, is there any AAPM or NCRP language on the choice of detectors
for Panorex units?

-L.P.