Speaker
Prof.
Donald Crabb
(University of Virginia)
Description
In this presentation, the design of the polarized target to be used in the SPINQUEST experiment at FermiLab will be discussed. The polarized target, consisting of either NH3 or ND3, is centered in a 5T magnet field and polarized by 140 GHz microwaves. A new NMR system will measure the degree of polarization. The evaporation of the helium surrounding the target, caused by the intense beam of protons necessary for the experiment, is accommodated by a 14,000 m3/hr Roots pumping system. NH3 polarizations above 90% have been achieved, comparable to what has been achieved in other systems.
Primary author
Prof.
Donald Crabb
(University of Virginia)
