Studies of muon yield vs target and collimator properties a arjad m hebert w molzon
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Studies of Muon Yield vs. Target and Collimator Properties – A. Arjad, M. Hebert, W. Molzon PowerPoint PPT Presentation


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Studies of Muon Yield vs. Target and Collimator Properties – A. Arjad, M. Hebert, W. Molzon. Effect of water cooling channel and containment vessel Optimization of collimator geometry to improve yield, background rejection, and tracker rates. W. Molzon.

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Studies of Muon Yield vs. Target and Collimator Properties – A. Arjad, M. Hebert, W. Molzon

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Studies of muon yield vs target and collimator properties a arjad m hebert w molzon

Studies of Muon Yield vs. Target and Collimator Properties – A. Arjad, M. Hebert, W. Molzon

Effect of water cooling channel and containment vessel

Optimization of collimator geometry to improve yield, background rejection, and tracker rates

W. Molzon


Muon yield vs water cooled target properties

Muon Yield vs. Water-cooled Target Properties

Study of effect of target cooling channel and inlet/outlet pipes on muon yield

All with ~3 mm ODinlet/outlet pipes

No inlet/outlet pipe

 large inlet/outlet

Small water channel and containment tube costs about 5%

Inlet/outlet pipes should be minimized (further study)

William Molzon, UC Irvine Studies of Muon Yield for Target and Collimators


Optimization of collimator properties

Optimization of Collimator Properties

Collimators should be optimized for numerous effects:

  • Maximize negative muon stopping rate

  • Minimize positive particle flux, particularly muons at large radii

  • Minimize electron and positron transmission

  • Minimize size of transport channel to minimize ripple and other field specs

    Parameters to vary:

  • Radii of three collimators

  • Upper limit on collimator limiting vertical beam size at center collimator – making it smaller reduces positive muon yield; making it very small will limit low energy e+/-, particularly e+

  • Lower limit on collimator limiting vertical beam size at center collimator – making it larger increases muon yield but makes it more difficult to meet field spec

    Use trick of generating and storing events that pass through largest collimator openings, then rerunning events with tighter collimators to reduce statistical uncertainties, which become negligible in this study

William Molzon, UC Irvine Studies of Muon Yield for Target and Collimators


Optimization of collimator properties1

Optimization of Collimator Properties

Next Steps:

  • Vary parameters about new nominal values, including correlations

  • Look at suppression of electrons and positrons

  • Look at difficulty with meeting field spec in enlarged transport size

William Molzon, UC Irvine Studies of Muon Yield for Target and Collimators


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