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

2. 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

3. 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

4. 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

5. 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

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

7. Monte-Carlo Data: Neutrons in air at 1 atm

8. Monte-Carlo Data: Neutrons in air at 1 atm

9. Monte-Carlo Data: Photons in air at 1 atm

10. Simple Model: Geometry

11. Simple Model: Point-Kernel Dose Rates