Abstract: A method for monitoring and controlling neutron beams includes performing a calibration process for a monitoring dosimeter at a first set of conditions for directing a neutron beam towards an object location, the neutron beam being emitted from a neutron-generating target in response to an incident charged particle beam, the process comprising: obtaining data indicating a first neutron flux measured by the monitoring dosimeter between the monitoring dosimeter and the object location, the monitoring dosimeter offset from the axis by a distance equal to or greater than the beam radius; obtaining data indicating a second neutron flux measured by a reference dosimeter between the target and the object location; storing calibration data including a correlation between the first neutron flux and the second neutron flux; and based on the calibration data, using the monitoring dosimeter to monitor neutron flux incident on a patient during boron neutron capture therapy treatment.

Abstract: The invention is an improved device for transporting loads between various elevations. Such loads may be handicapped persons in wheelchairs, wheeled truck loads of freight or materials, wheeled people carriers, or other similar loads that require transport from one elevation to another, either ascending or descending. The improved device serves a double mission as a regular stairway facility for ambulatory persons, and as a ramp-type facility for wheeled vehicles carrying a person, or persons, or a load of freight or materials, and other such loads as may require movement from one elevation to another elevation.