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Cost Room Availability Passive Shielding

Detector spheres for accelerators. Cost Room Availability Passive Shielding. An experimental setup for accelerators. 1 2 3 4. R. 1.27. An experimental setup for accelerators. An experimental setup for accelerators. An experimental setup for accelerators.

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Cost Room Availability Passive Shielding

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  1. Detector spheres for accelerators • Cost • Room • Availability • Passive Shielding Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  2. An experimental setup for accelerators 1 2 3 4 R 1.27 Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  3. Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  4. An experimental setup for accelerators Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  5. An experimental setup for accelerators Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  6. An experimental setup for accelerators Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  7. An experimental setup for accelerators Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  8. An experimental setup for accelerators Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  9. An experimental setup for accelerators • Low-energy ultra-weak resonance. • 10 days beam on target. Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  10. An experimental setup for accelerators Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  11. Principles of Spectrometry • Interaction of heavy charged particles • Electronic or nuclear (Rutherford, nuclear reactions, …) • or radiative (Bremsstrahlung). Al in Al Excitation Ionization ion-pair, suppress recombination in detectors. Energy loss SRIM http://www.srim.org • Depletion layer. • Delta rays and secondary electrons. • Electron suppression for charge integration in accelerators. • Faraday Cup. • Tracks. Detectors mainly designed to make use of electronic interactions. Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  12. Principles of Spectrometry Stopping power Bethe-Bloch formula ~1/E Minimum ionizing particles (mip). Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  13. Principles of Spectrometry Units (conversion) You will encounter this when you run SRIM eV / Å keV / m MeV / mm keV / (g/cm2) MeV / (mg/cm2) keV / (mg/cm2) eV / (1x1015 atoms/cm2) Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  14. Principles of Spectrometry What about fission fragments????? • Energy loss is a stochasticprocess, thus energy straggling. Accelerated beam ~1/E Electron pick-up. Target Bragg curve Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  15. Principles of Spectrometry Accelerated beam Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  16. Principles of Spectrometry Range of charged particles Compare to gamma … !!! Range straggling? • An “old” idea to measure energy..! • Surface barrier, PIPS. • For a detector to register the full energy of charged particles, its thickness should be more than the range at that energy. • Sometimes we look for partial energy. • E-E detection. • Energy and position sensitive detectors. • Radioactive ion beams. Counts number Mean and extrapolated range. Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  17. Principles of Spectrometry E-E detection. Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  18. Principles of Spectrometry Energy deposited in an absorber (or detector). Or, if “thin” absorber: Both are not accurate. Why? You can do it better with SRIM. Use SRIM Data to reproduce the graphs. Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  19. Principles of Spectrometry Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  20. Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

  21. Principles of Spectrometry Stopping time Problem…!! • Units? • Applicability? HW 21 • Detector response time. • Effect on Doppler shift and broadening in nuclear reactions. Compare the application of scaling laws and Bragg-Kleeman rule with SRIM. Work out many examples. Ranges? HW 22 Radiation Detection and Measurement, JU, First Semester, 2010-2011 (Saed Dababneh).

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