Difference between revisions of "TL-Polarimetry"
From PREX Wiki
Jump to navigationJump to searchKent Paschke (talk | contribs) |
Kent Paschke (talk | contribs) |
||
| Line 30: | Line 30: | ||
*** beam angle | *** beam angle | ||
*** Levchuk | *** Levchuk | ||
| + | ** Predict singles and coincidence (ee) rates | ||
| + | *** including detector segmentation | ||
* Magnetic Field | * Magnetic Field | ||
** determine realistic fields with realistic iron configuration (interacting magnets?) | ** determine realistic fields with realistic iron configuration (interacting magnets?) | ||
| + | |||
=== Target system installation === | === Target system installation === | ||
=== Plan to establish high-precision Moller polarimetry (ERR recommendation) === | === Plan to establish high-precision Moller polarimetry (ERR recommendation) === | ||
Revision as of 22:50, 28 March 2018
Contact: Kent Paschke
Manpower: Kent Paschke, Dave Gaskell, Sanghwa Park, Don Jones
Moller Polarimeter
1 GeV Optics (Gaskell, Sangwha)
- Scan around current solution using G4 simulation
Simulation for acceptance evaluation
- Generator
- elastic ee
- Multiple scattering / Brem (external)
- internal Brem?
- Levchuk
- Include Solenoid field
- Benchmark to 5 GeV results
- Benchmark to G3 simulation results
- Test new optics for 1.05 GeV, 2.1 GeV
- cut at collimator, verify no other intersections for ee elastic
- use larger beampipe, verify slightly larger collimator passes everywhere?
- map collimator to COM angles, widen slightly and show they reach the collimator?
- Look at A_{ZZ} (and rates?) sensitivity to:
- magnet mis-tune
- magnet mis-alignment
- solenoid field
- beam position
- beam angle
- Levchuk
- Predict singles and coincidence (ee) rates
- including detector segmentation
- cut at collimator, verify no other intersections for ee elastic
- Magnetic Field
- determine realistic fields with realistic iron configuration (interacting magnets?)
Target system installation
Plan to establish high-precision Moller polarimetry (ERR recommendation)
Compton Polarimeter
Laser Maintenance and improvement (Dave, Cip, Amali) summer 2018
Photon Detector (Juan-Carlos)
DAQ (Franklin, Michaels)
Main Compton photon detector DAQ
- Recover DAQ signals (check that all cables from DVCS run are still there - or recover) and add further needed DAQ signals
- Check helicity signal noise
- Recover Analyzer and back up on github.
- Automate analysis
- Create online analyzer
- Automate analysis
- Learn Compton simulation and produce meaningful results
- Investigate what happened to the flash ADC rework (was it sent to STRUCK?!)
- Support PMT linearity studies (if done @JLab)
Scalar DAQ
