Difference between revisions of "JPOS09"
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=Polarimetry= | =Polarimetry= | ||
| − | P. Schuller (DESY) has the iron block used in E-166 at SLAC for the compton transmission polarimeter. The | + | P. Schuller (DESY) has the iron block used in E-166 at SLAC for the compton transmission polarimeter. The incident photon Energy went up to 8 MeV. |
| − | We could measure positron polarization by measuring the polarization of photons from the positron annihilation. | + | We could measure positron polarization by measuring the polarization of photons from the positron annihilation. Compton scattering depends on the polarization of the struck atomic electrons. An external B-field will polarize the FE block. You can either flip the direction of the B-file or the direction of the incident photon polarization to measure the photon polarization. |
| + | The IAC could make a compton transmission polarimeter to use on the photo-fission experiment as well as a proto-type for JLab. | ||
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| + | =Thermal positrons= | ||
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| + | How big is the user thermal positron user community? | ||
[http://wiki.iac.isu.edu/index.php/Positrons Go Back] | [http://wiki.iac.isu.edu/index.php/Positrons Go Back] | ||
Revision as of 21:05, 26 March 2009
http://conferences.jlab.org/JPOS09/
Positron_Workshop_2009 : March 25-27, 2009
By September 2009:
Wed 3/25/09
2 exchange
looking for positron currents of 1 A in Hall C or 100 nA in Hall B.
Polarimetry
P. Schuller (DESY) has the iron block used in E-166 at SLAC for the compton transmission polarimeter. The incident photon Energy went up to 8 MeV.
We could measure positron polarization by measuring the polarization of photons from the positron annihilation. Compton scattering depends on the polarization of the struck atomic electrons. An external B-field will polarize the FE block. You can either flip the direction of the B-file or the direction of the incident photon polarization to measure the photon polarization.
The IAC could make a compton transmission polarimeter to use on the photo-fission experiment as well as a proto-type for JLab.
Thermal positrons
How big is the user thermal positron user community?