Radiation Dose Characterization of 400 KeV Heavy Ion Beam
Location
CSU Ballroom
Start Date
18-4-2016 10:00 AM
End Date
18-4-2016 11:30 AM
Student's Major
Physics and Astronomy
Student's College
Science, Engineering and Technology
Mentor's Name
Andrew Roberts
Mentor's Department
Physics and Astronomy
Mentor's College
Science, Engineering and Technology
Description
We developed the characterization of the radiation dose rate produced by the 400KV Van de Graaff particle accelerator at the Applied Nuclear Science Lab at Minnesota State University, Mankato. The purpose was to establish operation parameters for providing known radiation doses for studies in materials science and biology. The radiation dose is surprisingly centered toward the low energy end of the accelerator, dominated by relatively low energy x-rays produced with the high current scattered beam. Beam generation and acceleration control were optimized to maximize the radiation dose available. Results show that the dose rate is proportional to the amount of beam current and strongly dependent on accelerating voltage. Also, we were able to reproducibly validate that the radiation dose rate is proportional to 1/R^2 as the position of the dosimeter is moved away from the radiation hotspot. A maximum radiation dose of 5.5 rad/hr was observed at the broad hotspot, allowing for a radiation dosage of over 100 rad per day.
Radiation Dose Characterization of 400 KeV Heavy Ion Beam
CSU Ballroom
We developed the characterization of the radiation dose rate produced by the 400KV Van de Graaff particle accelerator at the Applied Nuclear Science Lab at Minnesota State University, Mankato. The purpose was to establish operation parameters for providing known radiation doses for studies in materials science and biology. The radiation dose is surprisingly centered toward the low energy end of the accelerator, dominated by relatively low energy x-rays produced with the high current scattered beam. Beam generation and acceleration control were optimized to maximize the radiation dose available. Results show that the dose rate is proportional to the amount of beam current and strongly dependent on accelerating voltage. Also, we were able to reproducibly validate that the radiation dose rate is proportional to 1/R^2 as the position of the dosimeter is moved away from the radiation hotspot. A maximum radiation dose of 5.5 rad/hr was observed at the broad hotspot, allowing for a radiation dosage of over 100 rad per day.
Recommended Citation
Arneson, Scott; Donald Rudquist; Evan Koehler; Morgan O'Brien; and Wyatt Pouliot. "Radiation Dose Characterization of 400 KeV Heavy Ion Beam." Undergraduate Research Symposium, Mankato, MN, April 18, 2016.
https://cornerstone.lib.mnsu.edu/urs/2016/poster-session-A/59
