The Woodruff School

SUMMARY

A systematic study of ionizing radiation generated from high-intensity laser-matter interactions is underway at SLAC National Accelerator Laboratory using a femtosecond-pulsed Ti:sapphire laser at the Linac Coherent Light Source (LCLS) Matter in Extreme Conditions (MEC) facility. Radiation dose measurements were performed with a combination of passive and active instruments to evaluate the ionizing radiation hazard generated from laser-matter interactions. Preliminary results from these dose measurements for laser intensities between 10^18-10^20 W/cm^2 are presented in this proposal and compared to a theoretical dose yield model. The purpose of this dissertation is to better characterize the ionizing radiation source term from laser-matter interactions, to evaluate the radiation dose yield model from laser-matter interaction, and to further refine that model with measurements at MEC and computer simulations using the FLUKA Monte Carlo transport code and the EPOCH particle-in-cell (PIC) code.

SUBJECT:	Ph.D. Proposal Presentation

BY:	Taiee Liang

TIME:	Friday, March 25, 2016, 10:30 a.m.

PLACE:	Boggs, 3-39

TITLE:	Characterization of Ionizing Radiation Generated from High-Intensity Laser Interactions with Matter

COMMITTEE:	Dr. Nolan E. Hertel, Chair (NRE) Dr. Chaitanya S. Deo (NRE) Dr. Anna Erickson (NRE) Dr. C. K. Chris Wang (NRE) Dr. Sayed H. Rokni (SLAC National Accelerator Laboratory)

SUMMARY A systematic study of ionizing radiation generated from high-intensity laser-matter interactions is underway at SLAC National Accelerator Laboratory using a femtosecond-pulsed Ti:sapphire laser at the Linac Coherent Light Source (LCLS) Matter in Extreme Conditions (MEC) facility. Radiation dose measurements were performed with a combination of passive and active instruments to evaluate the ionizing radiation hazard generated from laser-matter interactions. Preliminary results from these dose measurements for laser intensities between 10^18-10^20 W/cm^2 are presented in this proposal and compared to a theoretical dose yield model. The purpose of this dissertation is to better characterize the ionizing radiation source term from laser-matter interactions, to evaluate the radiation dose yield model from laser-matter interaction, and to further refine that model with measurements at MEC and computer simulations using the FLUKA Monte Carlo transport code and the EPOCH particle-in-cell (PIC) code.