1. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 1 Principles of Spectrometry

2. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 2 Principles of Spectrometry What is this?

3. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 3 Principles of Spectrometry Deconvolution.

4. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 4 Principles of Spectrometry Energy and efficiency calibration.

5. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 5 Compton suppression. “Anti-coincidences”. What if cascades are present? ► Coincidences. Select events. Principles of Spectrometry By software or by hardware.

6. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 6 Advanced background reduction Cascade selection

7. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 7 Compton spectrometer. Another example for coincidences. Principles of Spectrometry

8. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 8 Peak area determination. Peak-to-total ratio. Peak-to-Compton ratio. Relative efficiency. Intrinsic efficiency. Absolute efficiency. Total efficiency. Solid angle. Energy Resolution (effect of number of charge carriers). Dead time. Resolving time. Anti-coincidences. Coincidences. Summation effects and true coincidences. Random coincidences. Attenuation coefficient. Mass attenuation coefficient. Mean-free path. Principles of Spectrometry

9. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 9 Linear attenuation coefficient  (photoelectric) +  (Compton) +  (pair production) Mean free path Mass attenuation coefficient Mass attenuation coefficient is independent of density and physical state. Compounds and mixtures?? Give examples. Refer to XCOM. Mass thickness HW 7 Principles of Spectrometry

10. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 10 Self-Absorption Photon Attenuation Photon Attenuation Valid for parallel photon paths or far geometries. HW 8 Not realistic…!! Principles of Spectrometry

11. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 11 Isotropic Photon Emission Solutions to self absorption at close geometries? MC Principles of Spectrometry

12. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 12 Geometric correction factor Point Source Detector Extended Source Detector THINKING QUIZ Principles of Spectrometry

13. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 13 Cost Room Availability Passive Shielding Detector spheres for accelerators

14. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 14 An experimental setup for accelerators R 1.27 1 2 3 4

15. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 15

16. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 16 An experimental setup for accelerators

17. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 17 An experimental setup for accelerators

18. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 18 An experimental setup for accelerators

19. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 19 An experimental setup for accelerators

20. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 20 An experimental setup for accelerators

21. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 21 An experimental setup for accelerators Low-energy ultra-weak resonance. 10 days beam on target.

22. Accelerator Physics, JU, First Semester, 2010-2011 (Saed Dababneh). 22 An experimental setup for accelerators