Transcript of an interview with Merle Timblin, Civilian Conservation Corps worker and U.S. Army WWII Veteran. Timblin discusses his childhood in western Pennsylvania; father’s work as a farmer, coal miner, and WPA blacksmith; life on farms and in mining towns during the Great Depression; decision to enroll in CCC before eighteenth birthday; experiences at CCC camps in Arizona and Pennsylvania; lessons learned from the CCC experience; experiences in the European Theater of World War II as radio operator in the U.S. Army Fourth Armored Division, including fighting in the Battle of the Bulge; lessons learned from experience in the Army; decision to relocate to Niagara Falls, N.Y., and thence to North Texas; career as a machinist and mechanic.

Interview with Opal Bowden, a resident of Weathorford, Texas. Bowden, born in 1908, discusses her family history, various experiences growing up, the 1918 Influenza pandemic, school, working in a beauty shop, her first husband, having a family, the Depression, dogs, World War Two, and her neighbors.

Numerical simulations of laser-plasma wakefield (particle) accelerators model the acceleration of electrons trapped in plasma oscillations (wakes) left behind when an intense laser pulse propagates through the plasma. The goal of these simulations is to better understand the process involved in plasma wake generation and how electrons are trapped and accelerated by the wake. Understanding of such accelerators, and their development, offer high accelerating gradients, potentially reducing size and cost of new accelerators. One operating regime of interest is where a trapped subset of electrons loads the wake and forms an isolated group of accelerated particles with low spread in momentum and position, desirable characteristics for many applications. The electrons trapped in the wake may be accelerated to high energies, the plasma gradient in the wake reaching up to a gigaelectronvolt per centimeter. High-energy electron accelerators power intense X-ray radiation to terahertz sources, and are used in many applications including medical radiotherapy and imaging. To extract information from the simulation about the quality of the beam, a typical approach is to examine plots of the entire dataset, visually determining the adequate parameters necessary to select a subset of particles, which is then further analyzed. This procedure requires laborious examination of …