S.M.A.R.T. Lab -

	Walter McNeil BS-ME 2005; Walter McNeil worked with Mark Harrison and Alireza Kargar to develop novel CdZnTe gamma ray spectrometers, and made the news with a simple CdZnTe detector that yielded 1.7% FWHM energy resolution at 662 keV. Walter is a co-recipient of a R&D 100 award for the Frisch Collar CdZnTe gamma ray spectrometer. Walter is now working on a Project with Dr. McGregor to produce high-efficiency thermal neutron imaging arrays for the DOE Spallation Neutron Source (SNS). The special detectors have thousand of microscopic perforations, all backfilled with neutron reactive materials, etched into high purity Si substrates. Thus far, the novel detectors have demonstrated over 30% thermal neutron detection efficiency as compared to common He-3 gas filled detector. Advisor: Douglas S. McGregor
Office Phone:	(785) 532-7087
Cell Phone:	(785) 341-2696
Office:	123 Ward Hall
Lab:	015, 016 and 01a Ward Hall
E-mail:	wjm4444@ksu.edu

Walter McNeil is constructing a holder for testing his CdZnTe crystals.

The simple "Frisch Grid" collimator device built by Walter yielded energy resolution less than 1.7% FWHM at 662 keV!

Room temperature spectrum taken with the CdZnTe Frisch collimator detector.

Walter slowly pushes a boat of Si wafers into the oxidation furnace.