Difference between revisions of "Positrons Using The HRRL"

From New IAC Wiki
Jump to navigation Jump to search
Line 29: Line 29:
 
[[File:HRRL_BeamLine_20101022.png | 200 px]]
 
[[File:HRRL_BeamLine_20101022.png | 200 px]]
  
[[Image:BeamLine_Yim_10-14-10.png| 450 px | Fig.1 HRRL beamline for positron generation.]]
+
[[Image:BeamLine_Yim_10-14-10.png| 700 px | Fig.1 HRRL beamline for positron generation.]]
  
  
  
 
[[Positrons]]
 
[[Positrons]]

Revision as of 08:45, 12 April 2012

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

HRRL beam line

HRRL BeamLine 20101022.png

Fig.1 HRRL beamline for positron generation.


Positrons