Difference between revisions of "Positrons Using The HRRL"

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[[File:PositronMom_Phase_10MeVelectrons.png | 300 px]]
 
[[File:PositronMom_Phase_10MeVelectrons.png | 300 px]]
  
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We may want the achromat to have a 10% or less energy spread to measure the above distribution but we will also wan to open the slits to maximize positron current.  This may mean accepting an energy spread of 30%.
  
 
Reference serkan thesis
 
Reference serkan thesis

Revision as of 15:57, 18 October 2010

The purpose of this research is to evaluate the veracity of a positron beam line using the quad triplet method to collect positrons produced when a 10 MeV electron beam impinges on a 1.25 mm thick Tungsten target.

Positron Beam Properties

Tungsten thickness

The optimal Tungsten target thickness to produce positrons using a 10 MeV incident electron beam appears to be 1.25 mm.

PositronProduction-vs-Energy 10MeVelectrons.png

Reference Serkan Thesis

Positron Momentum and Phase space distribution

Assuming a 10 meV electron beam having a gaussian spot size with a [math]\sigma_{xy}[/math]= 3mm.

PositronMom Phase 10MeVelectrons.png


We may want the achromat to have a 10% or less energy spread to measure the above distribution but we will also wan to open the slits to maximize positron current. This may mean accepting an energy spread of 30%.

Reference serkan thesis

Measured HRRL emittance=

Positrons