The goal of this year's project is to build and
test an adaptation of the Liquid Wall Radiation Shield used in
terrestrial applications of fusion technology. The present shielding
techniques primarily use gravity to create a waterfall effect that draws
the shielding liquid down the sides, or around the component that needs
shielding. Obviously, this technique will not work in microgravity
situations and may not work as well in other terrestrial gravitational
situations in which the force on the shielding liquid is not enough to
provide adequate flow over the radiation-sensitive surface.
This year’s proposed experiment will utilize different
techniques for controlling the flow of the Liquid in the Liquid Wall
Radiation Shield method. In continuing the trend from past years, we
will use as few moving parts as possible for greater reliability and
lifetime and because of this the pump needed to force the liquid through
our test loop will be an Electro-Magnetic pump. This pump will use
Lorenz forces to build up low pressures and force our shielding liquid
around the test loop.
We will also be using another JxB force to hold the shielding
fluid to the surface of our “radiation-sensitive” material. We will not
be testing the radiation absorption characteristics of this technique,
only the feasibility of using this technique to hold this liquid to a
surface.
Our test for success will be to prove that the shield we
produce holds its shape in the microgravity situation while electric
current is passing through it. If the current is shut off while the
plane is experiencing microgravity fluctuations, the shield should break
apart, rendering it useless for its radiation purpose and proving the
JxB force can be used to solve the problem.
In our experiment we hope to overcome the above
mentioned problems. Please see the
Introduction, Objectives, and
Equipment sections for more details.