BRAHMMA: A compact experimental accelerator driven subcritical facility using D-T/D-D neutron source

Abstract A zero-power, sub-critical assembly BRAHMMA driven by a D-T/D-D neutron generator has been designed and commissioned at Bhabha Atomic Research Centre, India. This facility has been conceived for investigating the static and dynamic neutronics properties of accelerator driven sub-critical systems. This paper describes the design details of the system. Preliminary results of flux measurements and reactivity measurements using pulsed neutron source techniques have also been presented. This system has the advantage of being modular in design which enables its k eff values to be changed depending upon type of fuel being used and it is first in the series of subcritical assemblies being designed.