Speaker
Mr
Hugo Natal da Luz
Description
The Micro Hole & Strip Plate (MHSP) operating in a CF4 atmosphere aiming neutron imaging will be presented. Recent results of the MHSP operation in pure xenon have shown position resolutions of around 300 μm and gas gains well above 10^4 for tetrafluoromethane (CF4) at atmospheric pressure. CF4 combined with 3He is generally known as an efficient gas for proton and tritium stopping, produced in the nuclear reaction 3He(n,p)T, as well as a low sensitive gamma medium. Using resistive lines for charge division deposited perpendicularly on each side of the MHSP, it is possible to determine where the nuclear reaction took place and to obtain the neutron image. Systematic studies of the position resolution and gas gain as a function of the CF4 pressure up to 2.6 bar will be presented.
