**Gammacell™ Calibration Geometry Dose Rate**

Uncertainty Source | Type A (%) | Type B (%) |
---|---|---|

Water Calorimetry in Vertical Beam | 0.16 | 0.51 |

Gammacell/Pool Source Ratio Data | 0.10 | |

Pool/B036 Source Ratio Data | 0.17 | |

Geometry Correction Factor | 0.11 | |

Field Uniformity | 0.01 | |

Source Timer (irrad time > 8min) | 0.20 | |

Co-60 Decay Correction | 0.02 | |

sqrt(sum) | 0.28 | 0.55 |

combined in quadrature | 0.60 | |

coverage factor at 95.45% | 2.0 | |

Expanded Uncertainty at 95.45% conf. | 1.2 |

**High-Dose Alanine Response**

Uncertainty Source | Type A (%) | Type B (%) |
---|---|---|

Repeatability and Reproducibility | 0.30 | |

Mass Determination | 0.20 | |

Interspecimen Contamination | 0.10 | |

Ruby Correction | 0.05 | |

System Drift | 0.10 | |

sqrt(sum) | 0.36 | 0.15 |

**Alanine Transfer - Photons > 100 Gy**

Uncertainty Source | Type A (%) | Type B (%) |
---|---|---|

Alanine Dose Rate | 0.25 | 0.55 |

Alanine Response | 0.36 | 0.15 |

Dose Rate Effect | 0.10 | |

Temperature Correction | 0.10 | |

Calibration Curve | 0.50 | 0.10 |

sqrt(sum) |
0.66 |
0.59 |

combined in quadrature | 0.89 | |

coverage at 95.45 % | 2.0 | |

Expanded Uncertainty at 95.45% conf. | 1.8 |

**Alanine Transfer - Photons <= 100 Gy**

Uncertainty Source | Type A (%) | Type B (%) |
---|---|---|

Alanine Dose Rate | 0.25 | 0.55 |

Alanine Response | 0.36 | 0.15 |

Dose Rate Effect | 0.10 | |

Temperature Correction | 0.10 | |

Calibration Curve | 0.50 | 0.10 |

Check Dose c.f. | 0.44 | 0.10 |

sqrt(sum) | 0.80 | 0.60 |

combined in quadrature | 1.00 | |

coverage factor at 95.45% | 2.0 | |

Expanded Uncertainty at 95.45% conf. | 2.0 |

**Alanine Transfer - Dose(Silicon)**

Uncertainty Source | Type A (%) | Type B (%) |
---|---|---|

Alanine Dose Rate | 0.25 | 0.55 |

Alanine Response | 0.36 | 0.15 |

Dose Rate Effect | 0.10 | |

Temperature Correction | 0.10 | |

Calibration Curve | 0.50 | 0.10 |

Uen Ratio Water to Silicon | 1.80 | |

sqrt(sum) | 0.66 | 1.90 |

combined in quadrature | 2.01 | |

coverage factor at 95.45% | 2.0 | |

Expanded Uncertainty at 95.45% conf. | 4.0 |

**Alanine Transfer - E-beam**

Uncertainty Source | Type A (%) | Type B (%) |
---|---|---|

Alanine Dose Rate | 0.25 | 0.55 |

Alanine Response | 0.36 | 0.15 |

Dose Rate Effect | 0.10 | |

Temperature Correction | 0.10 | |

Calibration Curve | 0.50 | 0.10 |

Electron Energy Dependence | 0.10 | |

sqrt(sum) | 0.66 | 0.60 |

combined in quadrature | 0.90 | |

coverage factor at 95.45% | 2.0 | |

Expanded Uncertainty at 95.45% conf. | 1.8 |

**Alanine Transfer - Cs-137**

Uncertainty Source | Type A (%) | Type B (%) |
---|---|---|

Alanine Dose Rate | 0.25 | 0.55 |

Alanine Response | 0.36 | 0.15 |

Dose Rate Effect | 0.10 | |

Temperature Correction | 0.10 | |

Calibration Curve | 0.50 | 0.10 |

Cs-Co Correction | 1.00 | 0.10 |

sqrt(sum) | 1.20 | 0.60 |

combined in quadrature | 1.34 | |

coverage factor at 95.45% | 2.0 | |

Expanded Uncertainty at 95.45% conf. | 2.7 |

**Alanine Transfer - Cs-137 <=50 Gy**

Uncertainty Source | Type A (%) | Type B (%) |
---|---|---|

Alanine Dose Rate | 0.25 | 0.55 |

Alanine Response | 0.36 | 0.15 |

Temperature Correction | 0.10 | |

Dose Rate Dependance | 0.10 | |

Calibration Curve | 0.44 | 0.10 |

Measurement c.f. | 0.44 | 0.10 |

Energy Dependence | 1.00 | 0.10 |

sqrt(sum) | 1.26 | 0.61 |

combined in quadrature | 1.40 | |

coverage factor k=2 | 2.0 | |

Expanded Uncertainty at 95.45% conf. | 2.8 |

Revisions History |
Date |
---|---|

Calibration Geometry Dose Rate changed: 1) GC207 to Gammacell; 2) GC/Pool Ratio from 0.08 to 0.10; 3) Added Geometry Correction Factor term of 0.11 to budget; 4) df/t-factor changed from 16/2.17 to 19/2.14. Changes allow budget to represent the largest uncertainty expected for the majority of geometries available. | Dec 13,2010 |

Coverage factor changed from varied to a uniform k=2.0 for all tables. | March 15,2013 |