Radiation Shielding Concerns for Cornells ERL By Kyle

Radiation Shielding Concerns for Cornell’s ERL By Kyle Ausfeld Mentor: Vaclav Kostroun

About me: Born 8 November 1987 in Schenectady New York Grew up in Newbury Vermont Moved to Pittsford New York Currently attending University of Rochester (NY) Planning on continuing to graduate school in physics

Causes of Radiation When high energy electrons are slowed down, Bremsstrahlung radiation is created Bremsstrahlung radiation can: be harmful gamma rays create virtual pair particles (e--e+) create neutrons, which are very hard

Objectives of REU Create a program (in MATLAB) to plot Monte-Carlo created data Write a program (in MATLAB) to calculate radiation dose rates using point-kernel analytic method Compare Monte-Carlo and point-kernel to see if results are comparable

Reasons for Point-Kernel Monte-Carlo calculations: Proven accurate, but take a lot of time to run Known to have errors when working with thick shielding Point-Kernel Short run time Easy to use

Current Progress Monte-Carlo data plotting program is complete Simple geometry point-kernel program is complete

Monte-Carlo Data: Neutrons in air at 1 atm

Monte-Carlo Data: Neutrons in air at 1 atm

Monte-Carlo Data: Photons in air at 1 atm

Simple Model: Geometry

Simple Model: Point-Kernel Dose Rates