1 - Nuclear Science and Engineering Lab (NSEL) - Virginia Tech

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Improvement of accuracy for collimators withrelatively low aspect ratioTo improve the accuracy, i.e., allowing for more ray penetration through thecollimators, in the Circular Ordinate Splitting (COS), we consideredincrease number of circles and increase number of directions per circle.This measure increased the accuracy, but was limitedNuclear EngineeringProgram40
Further Improvement of COS1. Split directions areweighted by the detectorsurface area projected alongthat direction to the frontof the collimator.2. The number of directionsper concentric circle isscaled to the circle area,except for the innermost,which is user specified.Phantom SurfaceNuclear EngineeringProgram41
Page 1 and 2: Advanced Hybrid Transport Methodolo
Page 3 and 4: Status of VT‐NEP• 5 Core facult
Page 5 and 6: • Leadership: Haghighat, Kulkarni
Page 7 and 8: What is Particle Transport Theory?D
Page 9 and 10: Deterministic - Linear Boltzmann Eq
Page 11 and 12: Monte Carlo Methods• Perform an e
Page 13 and 14: Therefore, hybrid methods are neede
Page 15 and 16: VT3G ‐Advanced Computer codes/For
Page 17 and 18: Nuclear Power• Development of adv
Page 19 and 20: Slide11Medicine• Development of a
Page 21 and 22: TITAN Code SystemTITAN is a 3‐D,
Page 23 and 24: Goal•Simulation of the SPECT (Sin
Page 25 and 26: Nuclear EngineeringProgramNCAT voxe
Page 27 and 28: Discrete ordinatesXHow to model the
Page 29 and 30: Step 2 - Selection of fictitious di
Page 31 and 32: Step 3 ‐ Sn with Fictitious Quadr
Page 33 and 34: Collimator CasesCaseAcceptanceAngle
Page 35 and 36: Maximum difference of TITAN results
Page 37 and 38: Profiles through row 33 ofprojectio
Page 39: Nuclear EngineeringProgram 39
Page 43 and 44: Collimator2.1Normalized Gamma Flux7
Page 45 and 46: Comparison of serial computation ti
Page 47 and 48: To solve 3‐D, real‐world partic

1 - Nuclear Science and Engineering Lab (NSEL) - Virginia Tech

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