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0. Using MC to understand Xenon

Geant4 Simulation of 3L chamber. 0. Using MC to understand Xenon. a. Status b. A bit of Guts c. Preliminary Findings d. Future Directions. proto-prototype @ Nevis. R. Gaitskell & P. Sorensen for XENON Collaboration 11 August 2003. Geant4 Simulation of 3L chamber.

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0. Using MC to understand Xenon

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  1. Geant4 Simulation of 3L chamber 0. Using MC to understand Xenon a. Status b. A bit of Guts c. Preliminary Findings d. Future Directions proto-prototype @ Nevis R. Gaitskell & P. Sorensen for XENON Collaboration 11 August 2003

  2. Geant4 Simulation of 3L chamber 1. Adding Detector Materials

  3. Geant4 Simulation of 3L chamber 2. Defining Detector Geometry

  4. Geant4 Simulation of 3L chamber 3. GEometry ANd Tracking --> output Above, penultimate steps in a GRDM decay of 137Cs using v4.5.0

  5. Geant4 Simulation of 3L chamber 4. PMT Data (from M. Yamashita & P. Majewski ) Note: scale is keV/p.e.

  6. Geant4 Simulation of 3L chamber 5. PMT Spectrum after cut

  7. Geant4 Simulation of 3L chamber 6. Charge Data From MCA. Scaled to keV using test pulse

  8. Geant4 Simulation of 3L chamber 7. MC Simulation Results

  9. Geant4 Simulation of 3L chamber 8. MC Position of Interactions (Your Geometrical Orientation)

  10. Geant4 Simulation of 3L chamber 9. Effect of Fiducial region cuts Peak / background relative counts change 25% FWHM @ 662 keV

  11. Geant4 Simulation of 3L chamber 10. MC v. actual charge collection What is going on below 300 keV ? (25% FWHM @ 662 keV MC data)

  12. Geant4 Simulation of 3L chamber 11. MC v. actual light collection Again, what is going on below 300 keV ? (25% FWHM @ 662 keV MC data)

  13. Geant4 Simulation of 3L chamber 12. Next Steps Visualisation. DAWN? ii. Getting fancy: Geant4 can incorporate E-fields iii. Modelling collection efficiency… iv.

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