University of Tennessee, Knoxville TRACE: Tennessee Research and Creative Exchange Supervised Undergraduate Student Research Chancellor’s Honors Program Projects and Creative Work 5-2015 Accelerator Facility Shielding Design Kaitlyn Hope Darby [email protected] Tucker Caden Mcclanaha University of Tennessee - Knoxville, [email protected] Adrian Moore University of Tennessee - Knoxville, [email protected] Christopher Tyler Crutcher University of Tennessee - Knoxville, [email protected] Melissa Alexis Megonigal University of Tennessee - Knoxville, [email protected] Follow this and additional works at: https://trace.tennessee.edu/utk_chanhonoproj Part of the Nuclear Engineering Commons Recommended Citation Darby, Kaitlyn Hope; Mcclanaha, Tucker Caden; Moore, Adrian; Crutcher, Christopher Tyler; and Megonigal, Melissa Alexis, "Accelerator Facility Shielding Design" (2015). Chancellor’s Honors Program Projects. https://trace.tennessee.edu/utk_chanhonoproj/1830 This Dissertation/Thesis is brought to you for free and open access by the Supervised Undergraduate Student Research and Creative Work at TRACE: Tennessee Research and Creative Exchange. It has been accepted for inclusion in Chancellor’s Honors Program Projects by an authorized administrator of TRACE: Tennessee Research and Creative Exchange. For more information, please contact [email protected]. ACCELERATOR FACILITY SHIELDING DESIGN Accelerator Facility Group 1: Christopher Tyler Crutcher Kaitlyn Darby Tucker McClanahan Melissa Megonigal Adrian Moore Date: April 2015 CONTENTS Page LIST OF FIGURES ..................................................................................................................................... iii LIST OF TABLES ....................................................................................................................................... iv 1. Introduction to Accelerator Facilities ..................................................................................................... 1 2. Accelerator Shielding Background ......................................................................................................... 1 2.1 Accelerator History ....................................................................................................................... 1 2.2 Current Accelerator Facilities ....................................................................................................... 2 3. Accelerator Facility Radiation Considerations ....................................................................................... 2 3.1 Shielding Design .......................................................................................................................... 2 3.2 Regulating Organizations ............................................................................................................. 3 3.3 Radiation Regulations .................................................................................................................. 4 4. Preliminary Design Features ................................................................................................................... 5 5. Preliminary Tasks ................................................................................................................................... 9 6. NCRP Accelerator Facility Shielding Calculation ............................................................................... 10 6.1 Overview of NCRP Method ....................................................................................................... 10 6.2 Barrier Calculations: 22 MV Accelerator ................................................................................... 12 6.3 Method Results: Prelimnary Floorplan ...................................................................................... 14 7. MCNP Accelerator Facility Simulation ................................................................................................ 16 7.1 Overview of the Monte Carlo N-Particle Code .......................................................................... 16 7.2 22 MV Accelerator Source Development .................................................................................. 16 7.3 Method ........................................................................................................................................ 16 7.3.1 Results ........................................................................................................................... 18 7.4 Full Accelerator Facility Model ................................................................................................. 21 7.4.1 MCNP Geometry ........................................................................................................... 21 7.4.2 Computation of MCNP Model ...................................................................................... 23 7.4.3 Post-processing Data Analysis ...................................................................................... 23 7.4.4 Dose Rate Map Results .................................................................................................. 23 8. Facility Quotes Contacts and Cost Analysis ......................................................................................... 30 8.1 Access Door Quote ..................................................................................................................... 30 8.2 Phantom Lift Quote .................................................................................................................... 30 8.3 Land Excavation Quote .............................................................................................................. 32 8.4 Concrete Quote ........................................................................................................................... 33 8.5 Licensing Quote .......................................................................................................................... 33 9. Accelerator Facility Future Work ......................................................................................................... 34 9.1 Environmental Impact of Facility ............................................................................................... 34 9.2 Facility Procedures and Recommendations ................................................................................ 34 9.2.1 Construction ................................................................................................................... 34 9.2.2 Additional Considerations ............................................................................................. 35 9.2.3 Radiation Safety ............................................................................................................ 36 9.2.4 Maintenance ................................................................................................................... 36 9.3 Additional Tasks ......................................................................................................................... 37 10. References ............................................................................................................................................ 38 Appendix A: Gantt Charts ............................................................................................................................ 40 Appendix B: Floor Plan ............................................................................................................................... 43 Appendix C: Available Software ................................................................................................................. 46 Appendix D: NCRP Calculations ................................................................................................................ 47 Appendix E: Additional Documentation ...................................................................................................... 53 LIST OF FIGURES Figure Page Fig. 1. Directly shielded door: large overlap alternative [11] ................................................................. 7 Fig. 2. Maze design [11] .......................................................................................................................... 8 Fig. 3. Comparison of concrete to earth shielding [11] ........................................................................... 9 Fig. 4. Barrier definition schematic [9] ................................................................................................. 11 Fig. 5. Primary barrier area calculation ................................................................................................. 11 Fig. 6. Primary barrier equations from NCRP method [11] .................................................................. 12 Fig. 7. Preliminary floorplan ................................................................................................................. 13 Fig. 8. Secondary barrier equations from NCRP method [11] .............................................................. 13 Fig. 9. First floor floorplan .................................................................................................................... 15 Fig. 10. Basement floor floorplan ........................................................................................................... 15 Fig. 11. Geometry of accelerator source term in the XZ plane ............................................................... 16 Fig. 12.