Difference between revisions of "Electron Analysis Tasks (new)"
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| − | This page contains a list of analysis tasks that need to be done to quote a polarization number for the electron detector. | + | This page contains a list of analysis tasks that need to be done to quote a polarization number for the electron detector. Items that overlap for electron and photon were copied from the photon detector list |
=== Run list === | === Run list === | ||
| Line 11: | Line 11: | ||
=== Replay of data === | === Replay of data === | ||
* Do we have the best BCM and BPM calibrations? Are they active in the analyzer for the appropriate run range? | * Do we have the best BCM and BPM calibrations? Are they active in the analyzer for the appropriate run range? | ||
| − | * Are the | + | * Are the replay level cuts implemented and verified? Eliminating overflow (255), excess hits etc |
| − | * Do we have analysis scripts for all quantities? Beam charge asymmetry, beam position, beam slope at interaction point? | + | * Do we have analysis scripts for all quantities? Beam charge asymmetry, beam position, beam slope at interaction point, electronic noise? |
* Do we have the ability to look at all quantities on laser cycle level? | * Do we have the ability to look at all quantities on laser cycle level? | ||
| + | === Hits Spectra per laser cycle === | ||
| + | * Do we have hits spectra per laser cycle? | ||
| + | * Are there correlations between strip hit rates and beam position, beam slope etc | ||
| + | * Are the singles and 2/3 rates consistent? | ||
| + | * What to do with misbehaving and or noisy strips | ||
| + | * Are there scripts to determine Compton edge strip? | ||
| + | * Is the Compton edge stable between laser cycles? | ||
=== Asymmetry per laser cycle === | === Asymmetry per laser cycle === | ||
* What is the asymmetry per laser cycle? | * What is the asymmetry per laser cycle? | ||
| + | * Is the strip-by-strip asymmetry consistent? | ||
| + | * What to do with strips with unusual variations in the asymmetry? | ||
* Are there correlations (as expected) between asymmetry and beam position, beam slope per laser cycle? | * Are there correlations (as expected) between asymmetry and beam position, beam slope per laser cycle? | ||
| − | === Polarization per slug === | + | === QED Asymmetry curve === |
| + | * What is the exact distance of each plane from the 3rd dipole? | ||
| + | * What is the distance of the Compton edge from the beam? | ||
| + | * Do we have the best x - to - rho conversion? | ||
| + | |||
| + | === Polarization per laser cycle === | ||
| + | * What is the best method to fit the QED curve to the measured asymmetry curve? | ||
| + | * Is the geometry parameter (2nd parameter) consistent between planes and stable between laser cycles? | ||
| + | * What is the variation in polarization due to finite strip width? | ||
| + | * What is the polarization per laser cycle? | ||
| + | |||
| + | === Polarization per slug === | ||
* What is the weighted mean asymmetry per slug? | * What is the weighted mean asymmetry per slug? | ||
* What is the polarization per slug? | * What is the polarization per slug? | ||
Latest revision as of 16:25, 21 June 2012
This page contains a list of analysis tasks that need to be done to quote a polarization number for the electron detector. Items that overlap for electron and photon were copied from the photon detector list
Run list
- Have we identified the major breaks in the data taking (high voltage changes, spot moves, lead thickness, etc)?
- Is this information accessible and verifiable?
- Do we have a list of runs that are supposed to be 'production quality'?
- Modification of this list will continue after replay.
Replay of data
- Do we have the best BCM and BPM calibrations? Are they active in the analyzer for the appropriate run range?
- Are the replay level cuts implemented and verified? Eliminating overflow (255), excess hits etc
- Do we have analysis scripts for all quantities? Beam charge asymmetry, beam position, beam slope at interaction point, electronic noise?
- Do we have the ability to look at all quantities on laser cycle level?
Hits Spectra per laser cycle
- Do we have hits spectra per laser cycle?
- Are there correlations between strip hit rates and beam position, beam slope etc
- Are the singles and 2/3 rates consistent?
- What to do with misbehaving and or noisy strips
- Are there scripts to determine Compton edge strip?
- Is the Compton edge stable between laser cycles?
Asymmetry per laser cycle
- What is the asymmetry per laser cycle?
- Is the strip-by-strip asymmetry consistent?
- What to do with strips with unusual variations in the asymmetry?
- Are there correlations (as expected) between asymmetry and beam position, beam slope per laser cycle?
QED Asymmetry curve
- What is the exact distance of each plane from the 3rd dipole?
- What is the distance of the Compton edge from the beam?
- Do we have the best x - to - rho conversion?
Polarization per laser cycle
- What is the best method to fit the QED curve to the measured asymmetry curve?
- Is the geometry parameter (2nd parameter) consistent between planes and stable between laser cycles?
- What is the variation in polarization due to finite strip width?
- What is the polarization per laser cycle?
Polarization per slug
- What is the weighted mean asymmetry per slug?
- What is the polarization per slug?
Comparisons
- Comparison of the photon polarization over electron polarization per slug: ratio, difference, pull plot.
- Comparison of the electron polarization over Moller polarization.
Monte Carlo studies
- Comprehensive list of MC tasks
