1 / 16

Muon Decay Experiment

Muon Decay Experiment. Levi Neukirch UNL CROP Saturday Oct. 14, 2006. Muons. Muons are unstable leptons Average lifetime t ave = 2.20 µs * µ -  e - + ν e + ν µ. ¯. * Introduction to Nuclear Physics. Kenneth Krane. Wiley & Sons. 1988. Experimental Goal. Measure muon lifetime

hollis
Download Presentation

Muon Decay Experiment

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Muon Decay Experiment Levi Neukirch UNL CROP Saturday Oct. 14, 2006

  2. Muons • Muons are unstable leptons • Average lifetime tave = 2.20 µs* • µ- e- +νe + νµ ¯ * Introduction to Nuclear Physics. Kenneth Krane. Wiley & Sons. 1988 Muon Decay Experiment

  3. Experimental Goal • Measure muon lifetime • Build a thick detector • Write Labview software to detect muon decay signatures • Analyze data and calculate average muon lifetime Muon Decay Experiment

  4. Apparatus • 4” thick scintillator plate • Trigger detector • Veto detector Muon Decay Experiment

  5. Apparatus • Why this setup? _ Remember: µ- e- + νe + νµ µ- Signal on Ch. 1 e- 1st Signal on Ch. 2 No Signal on Ch. 3 2nd Signal on Ch. 2 Muon Decay Experiment

  6. Apparatus Muon Decay Experiment

  7. Software • Labview code • Data collection • Data analysis • Dedicated to muon decay analysis Muon Decay Experiment

  8. Software: Collection • Sets coincidence criteria • Writes data to .txt file Muon Decay Experiment

  9. Software: Analysis • Reads .txt files • Computes lifetimes • Writes .xls (MS Excel) histogram file • Displays decay time histogram Muon Decay Experiment

  10. Software Muon Decay Experiment

  11. Data Analysis • A = A0exp[-λt] (1) • t1/2 = ln(2)/λ (2) • tave = t1/2 / ln(2) = ln(2)/λ/ln(2) (3) • tave = 1/λ (4) Muon Decay Experiment

  12. Data Analysis 2857 Events Numerical mean = 2.125 µs Muon Decay Experiment

  13. Data Analysis A = A0exp[-λt] (1) λ = 0.00046 s-1 Muon Decay Experiment

  14. Data Analysis • t1/2 = ln(2)/λ • tave = t1/2 / ln(2) tave = [ln(2)/0.00046 s-1]/ln2 = 1/0.00046 s-1 tave = 2.174 µs Muon Decay Experiment

  15. Data Analysis • (2.174µs - 2.20µs)/(2.20µs) = 1.2% difference Muon Decay Experiment

  16. Acknowledgements Thanks to: Prof. Dan Claes Prof. Greg Snow Prof. Herman Batelaan Jason Keller Muon Decay Experiment

More Related