Dose characteristics of the IHEP neutron reference fields

Interpretation of neutron detector readings in terms of dose equivalent is an important problem. Since response of a neutron detector has usually an energy dependence which is not adequately simulating the energy dependence of dose equivalent, its using as a dosemeter in real neutron fields of nuclear-physics device after a simple calibration in a neutron field of radionuclide source (such as 252Cf) leads to considerable errors. There are some different approaches to solve this problem. One of them proposing the dosemeter's calibration in workplace fields is available for personnel and area dosemeters. Another method is the calibration at neutron field having the spectrum simulating the real neutron field one. The method of superposition of calibration fields to obtain weighted neutron response is a following step in this direction. All of these approaches one way or another are concerned with application of neutron reference fields for these goals. (author)