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Online Muon Capture and Decay Experiment

Online Muon Capture and Decay Experiment . Megan Alexander, Daniel Miner, Wojtek Skulski, Frank Wolfs University of Rochester Work funded by a grant from the APS WYP 2005 and a grant from the NSF. Overview. Purpose:

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Online Muon Capture and Decay Experiment

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  1. Online Muon Capture and Decay Experiment Megan Alexander, Daniel Miner, Wojtek Skulski, Frank Wolfs University of Rochester Work funded by a grant from the APS WYP 2005 and a grant from the NSF.

  2. Overview • Purpose: • To capture and share data from cosmic muons, making a “real” physics experiment accessible to the public. • In this talk: • Experimental details • Website tour APS Meeting March 2006 M.Alexander

  3. Motivation • Time dilation (special relativity) • Classic experiment, popular in advanced physics labs • Outreach Mount Washington, NH APS Meeting March 2006 M.Alexander

  4. Xilinx Cypress EZ-USB BlackBox Apache XML/SWF Charts AWStats Experiment Setup Internet Cosmic Muons DDC-8 Circuit Board (DSP) Tools Detector (Scintillator + PMT) APS Meeting March 2006 M.Alexander

  5. JTAG connector RAM 500 kB Analog signal IN 8 channels (only 1 used) with digital offset and gain control micro processor RS-232 USB FPGA Logic connectors NIM 16 lines IN, 8 lines OUT 16 bidirectional TTL lines + 1 in (pool of extra logic I/O) DDC-8 • Developed by Wojtek Skulski. ADC 40 MHz * 10 bits (8 channels) ECL clock IN (optional) Diagnostic OUT 40 MHz * 10 bits APS Meeting March 2006 M.Alexander

  6. μ+ μ+ μ+ μ+ e+ ve vμ Typical Muon Signals Passing Muons: • Stopping Muons: APS Meeting March 2006 M.Alexander

  7. Web View: Waveforms Time constant: 2.1 μs http://wolfspc.pas.rochester.edu/muon/daq.html APS Meeting March 2006 M.Alexander

  8. Web View:Energy Spectra • Conventional muon lifetime experiments do not exploit DSP for particle ID: this one does! http://wolfspc.pas.rochester.edu/muon/EnergySpectra.html APS Meeting March 2006 M.Alexander

  9. Downloadable Data http://wolfspc.pas.rochester.edu/muon/DLData.html APS Meeting March 2006 M.Alexander

  10. Downloadable Data • View from Excel, MATLAB APS Meeting March 2006 M.Alexander

  11. Summary and Conclusion • Physics outreach enabled by hardware, software, web tools. • Total unique visitors: APS Meeting March 2006 M.Alexander

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